Merge branch 'chore/sidebar-wider'

恢复不再改名;同名兄弟占位时抛 409 name_conflict_on_restore + 人话提示,
操作者自行重命名现有节点或彻底删除旧节点后再恢复。

.gitea/workflows/checker-check.yml

@@ -1,12 +1,12 @@
 name: checker check
 
 # Builds and lints the Rust implementation crates under crates/ (the rule-based
-# checker that "stands in Lean's position" at product runtime).
+# lesson checker).
 #
-# Like spec-check, this is an INTERNAL gate on the implementation's own health
-# (does it build, pass its tests, satisfy clippy + rustfmt?). It is NOT a
-# spec-to-implementation conformance gate — implementations align to the Lean
-# contract by human review, not by CI. See the repo README.
+# This is an INTERNAL gate on the implementation's own health
+# (does it build, pass its tests, satisfy clippy + rustfmt?). There is no
+# decision-to-implementation conformance gate — implementations align to the
+# ADRs by human review, not by CI. See the repo README.
 
 on:
   push:

.gitea/workflows/hub-check.yml

@@ -1,8 +1,8 @@
 name: hub check
 
 # Builds, type-checks, and tests the Hub TS package under hub/.
-# The Hub is the Feishu-group collaboration + agent runtime half
-# (spec/System implementation). This is an INTERNAL gate on the Hub's own
+# The Hub is the Feishu-group collaboration + agent runtime half.
+# This is an INTERNAL gate on the Hub's own
 # health, like checker-check is for the Rust half.
 
 on:

.gitea/workflows/spec-check.yml

@@ -1,20 +0,0 @@
-name: spec check
-
-# Builds the Lean semantic master spec under spec/.
-# This is an INTERNAL well-formedness gate (does the contract type-check?),
-# NOT a spec-to-implementation conformance gate — implementations align to the
-# contract by human review, not by CI. See repo README.
-
-on:
-  push:
-  pull_request:
-  workflow_dispatch:
-
-jobs:
-  spec-check:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v5
-      - uses: leanprover/lean-action@v1
-        with:
-          lake-package-directory: spec

.gitignore

@@ -1,7 +1,3 @@
-# Lean / Lake build artifacts (spec/ has its own .gitignore too)
-.lake/
-**/.lake/
-
 # Rust / Cargo build artifacts (repo-wide cargo workspace at root)
 /target
 **/*.pdf
@@ -19,3 +15,5 @@ node_modules/
 
 # OS / editor
 .DS_Store
+
+.omo/

.scratch/saas-production-readiness/issues/05-define-abuse-capacity-controls.md

@@ -29,7 +29,7 @@ workload brakes.
 
 The full current-state inventory, accepted behavior, and release evidence are
 recorded in [Initial abuse and capacity controls](../assets/initial-abuse-capacity-controls.md),
-with the durable decision in ADR-0022 and `Spec.System.Capacity`. Numerical
+with the durable decision in ADR-0022. Numerical
 ceilings remain open until production-like calibration.
 
 The implementation frontier is:

.scratch/saas-production-readiness/issues/08-prove-production-release-gate.md

@@ -7,6 +7,6 @@ Blocked by: 01, 02, 03, 04, 05, 06, 07, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18,
 ## Question
 
 After the readiness investigations and resulting fixes are resolved, can one
-repeatable release procedure prove build/test/spec health, deploy a clean
+repeatable release procedure prove build/test health, deploy a clean
 production-like environment, exercise critical tenant and agent journeys,
 verify observability and recovery, and either roll forward or roll back safely?

.scratch/saas-production-readiness/issues/27-reconcile-audit-history-contract.md

@@ -8,7 +8,7 @@ Blocked by: 04
 
 Separate or unify run-bound audit entries, pre-run security/permission events,
 structured messages, and operational recovery events without weakening
-`Spec.System.Audit`'s pinned AuditEntry-to-run relation. Decide durability,
+the pinned AuditEntry-to-run relation. Decide durability,
 failure, retention, and query semantics; then enforce referential integrity and
 observable/recoverable writes instead of silently swallowing lost evidence.
 Do not merge these customer Project/Run records with ADR-0023's already-decided

.scratch/saas-production-readiness/issues/42-decide-platform-admin-identity-audit.md

@@ -40,9 +40,7 @@ an off-host recovery key, an incident and reason, and issues only an expiring
 Emergency Platform Grant.
 
 The complete accepted decision and implementation divergences are in
-[ADR-0023](../../../docs/adr/0023-platform-administrator-identity-and-audit.md).
-The pinned semantic invariants are in
-[`Spec.System.PlatformAdministration`](../../../spec/Spec/System/PlatformAdministration.lean),
+[ADR-0023](../../../docs/adr/0023-platform-administrator-identity-and-audit.md),
 and the canonical terms are in [`CONTEXT.md`](../../../CONTEXT.md).
 
 Exact numeric session/invitation/step-up limits and browser mechanics remain

AGENTS.md

@@ -1,29 +1,25 @@
 # AGENTS.md —— agent 操作手册(全 repo)
 
-本 repo 是 monorepo。先读根 `README.md` 的"宪法"5 条,那是一切工作的前提。本文件是给在这里干活的 coding agent 的纪律。
+本 repo 是 monorepo。先读根 `README.md` 的"宪法"4 条,那是一切工作的前提。本文件是给在这里干活的 coding agent 的纪律。
 
 ## 这个 repo 是什么
 
-- `spec/` 是一份**人机共识的契约**(Lean 语义母本),是产品语义的上游参照。
-- 其余部件(将来的 `spec/` 外文件夹)是**向 `spec/` 对齐的实现**。
+- `docs/adr/` 是系统级决策的唯一权威来源;`CONTEXT.md` 是平台语言词汇表;代码注释把关键不变量锚到 ADR 编号,可 grep。
 - `hub/` 的平台层按 SaaS 形态演进:`Organization` 是 tenant root;`Project`/`Team`
-  必须归属 org,TEAM→PROJECT 授权不得跨 org(见 ADR-0020 / `Spec.System.Organization`)。
+  必须归属 org,TEAM→PROJECT 授权不得跨 org(见 ADR-0020)。
 - org 后台 project explorer 里 `Folder` 是透明组织节点,不是权限资源;project 仍是权限边界。
-  普通老师可在飞书群自助建 project 但受 org policy 控制(见 ADR-0021 /
-  `Spec.System.ProjectWorkspace`)。
+  普通老师可在飞书群自助建 project 但受 org policy 控制(见 ADR-0021)。
 - 每个 org 自选 BYOK 或平台托管 model provider connection;平台托管也必须是该 org
-  独享的 key/base URL,不得让无关 org 共用 process-global provider key(见 ADR-0021 /
-  `Spec.System.Organization`)。
+  独享的 key/base URL,不得让无关 org 共用 process-global provider key(见 ADR-0021)。
 - Feishu/provider secret 使用本地版本化 master-key keyring 的信封加密;生产由 systemd
   credential 注入,运行时只允许显式 org/project scope 的 fail-closed resolver,不得回退
   process-global credential;Agent child 只接收 run-scoped loopback proxy capability,
-  不接收 org provider credential(见 ADR-0024 / `Spec.System.Organization`)。
+  不接收 org provider credential(见 ADR-0024)。
 - 生产容量按不可突破的 platform ceiling 与 org 可下调 policy 分层;有效限制取两者较低值。
-  Agent admission 必须持久、有界、跨 org 公平且显式背压(见 ADR-0022 /
-  `Spec.System.Capacity`)。
+  Agent admission 必须持久、有界、跨 org 公平且显式背压(见 ADR-0022)。
 - 平台管理员只通过独立的 platform-owned 飞书应用与可撤销 Platform Session 认证,不复用
   客户 `User`/org membership;平台写操作与 append-only audit 同事务,break-glass 只走
-  双因子的离线恢复流程(见 ADR-0023 / `Spec.System.PlatformAdministration`)。
+  双因子的离线恢复流程(见 ADR-0023)。
 - 受控 alpha 暂采用一 Organization 一具名 systemd Silo:独立 database role/database、
   service identity、workspace、keyring 与 Feishu/provider connection；进程必须由
   `HUB_SILO_ORGANIZATION_ID` fail-closed 绑定唯一 org，平台后台不开放。共享 SaaS
@@ -44,12 +40,12 @@
 
 ## 纪律
 
-1. **不得用预训练先验脑补本领域。** 这个领域很新,你没有相关先验。契约里 prose doc 注释是语义的唯一权威来源;契约没写的,就是没定的。
+1. **不得用预训练先验脑补本领域。** 这个领域很新,你没有相关先验。ADR 与 `CONTEXT.md` 是语义的唯一权威来源;没写的,就是没定的。
 
-2. **凡契约未写明者,不得假设。** 遇到标了 `OPEN` 的地方,或契约根本没覆盖的地方,**显式 surface 出来**让开发者决定,绝不擅自替它选一个解。
+2. **凡 ADR 未写明者,不得假设。** 遇到没覆盖的地方,**显式 surface 出来**让开发者决定,绝不擅自替它选一个解。
 
-3. **改 `spec/` 必须保持其 `lake build` 通过。** 在 `spec/` 目录下跑 `lake build`。新增声明必须带 `/-- … -/` doc 注释和恰当标签(`PINNED` / `OPEN` / `ADR-NNNN`)。规范见 `spec/README.md`。不准用 `sorry` 把 build 糊绿。
+3. **新语义决策进 ADR。** 跨部件的语义分歧点按编号顺延新增 `docs/adr/NNNN-*.md`;代码里的关键不变量用注释锚到 ADR 编号,保持可 grep。已有 ADR 正文不改写历史——推翻旧决策就写新 ADR 标记 supersede。
 
-4. **实现向契约对齐;偏离必须 surface。** 没有 CI gate 替你把关 spec↔实现的一致性(见宪法第 2 条)——这道对齐靠 review 和你巡逻 diff。发现实现与契约不一致时,报告它,不要默默让其中一边将就另一边。
+4. **实现向 ADR 对齐;偏离必须 surface。** 没有 CI gate 替你把关 ADR↔实现的一致性(见宪法第 2 条)——这道对齐靠 review 和你巡逻 diff。发现实现与决策不一致时,报告它,不要默默让其中一边将就另一边。
 
 5. **写操作谨慎。** 线上操作、git 写操作前与开发者确认(这是开发者的全局偏好)。

CLAUDE.md

@@ -1,25 +1,23 @@
 # CLAUDE.md —— agent 操作手册(全 repo)
 
-本 repo 是 monorepo。先读根 `README.md` 的"宪法"5 条,那是一切工作的前提。本文件是给在这里干活的 coding agent 的纪律。
+本 repo 是 monorepo。先读根 `README.md` 的"宪法"4 条,那是一切工作的前提。本文件是给在这里干活的 coding agent 的纪律。
 
 ## 这个 repo 是什么
 
-- `spec/` 是一份**人机共识的契约**(Lean 语义母本),是产品语义的上游参照。
-- 其余部件(将来的 `spec/` 外文件夹)是**向 `spec/` 对齐的实现**。
+- `docs/adr/` 是系统级决策的唯一权威来源;`CONTEXT.md` 是平台语言词汇表;代码注释把关键不变量锚到 ADR 编号,可 grep。
 - `hub/` 的平台层按 SaaS 形态演进:`Organization` 是 tenant root;`Project`/`Team`
-  必须归属 org,TEAM→PROJECT 授权不得跨 org(见 ADR-0020 / `Spec.System.Organization`)。
+  必须归属 org,TEAM→PROJECT 授权不得跨 org(见 ADR-0020)。
 - org 后台 project explorer 里 `Folder` 是透明组织节点,不是权限资源;project 仍是权限边界。
-  普通老师可在飞书群自助建 project 但受 org policy 控制(见 ADR-0021 /
-  `Spec.System.ProjectWorkspace`)。
+  普通老师可在飞书群自助建 project 但受 org policy 控制(见 ADR-0021)。
 
 ## 纪律
 
-1. **不得用预训练先验脑补本领域。** 这个领域很新,你没有相关先验。契约里 prose doc 注释是语义的唯一权威来源;契约没写的,就是没定的。
+1. **不得用预训练先验脑补本领域。** 这个领域很新,你没有相关先验。ADR 与 `CONTEXT.md` 是语义的唯一权威来源;没写的,就是没定的。
 
-2. **凡契约未写明者,不得假设。** 遇到标了 `OPEN` 的地方,或契约根本没覆盖的地方,**显式 surface 出来**让开发者决定,绝不擅自替它选一个解。
+2. **凡 ADR 未写明者,不得假设。** 遇到没覆盖的地方,**显式 surface 出来**让开发者决定,绝不擅自替它选一个解。
 
-3. **改 `spec/` 必须保持其 `lake build` 通过。** 在 `spec/` 目录下跑 `lake build`。新增声明必须带 `/-- … -/` doc 注释和恰当标签(`PINNED` / `OPEN` / `ADR-NNNN`)。规范见 `spec/README.md`。不准用 `sorry` 把 build 糊绿。
+3. **新语义决策进 ADR。** 跨部件的语义分歧点按编号顺延新增 `docs/adr/NNNN-*.md`;代码里的关键不变量用注释锚到 ADR 编号,保持可 grep。已有 ADR 正文不改写历史——推翻旧决策就写新 ADR 标记 supersede。
 
-4. **实现向契约对齐;偏离必须 surface。** 没有 CI gate 替你把关 spec↔实现的一致性(见宪法第 2 条)——这道对齐靠 review 和你巡逻 diff。发现实现与契约不一致时,报告它,不要默默让其中一边将就另一边。
+4. **实现向 ADR 对齐;偏离必须 surface。** 没有 CI gate 替你把关 ADR↔实现的一致性(见宪法第 2 条)——这道对齐靠 review 和你巡逻 diff。发现实现与决策不一致时,报告它,不要默默让其中一边将就另一边。
 
 5. **写操作谨慎。** 线上操作、git 写操作前与开发者确认(这是开发者的全局偏好)。

CONTEXT.md

@@ -99,3 +99,7 @@ _Avoid_: Cost budget, unlimited run
 **Emergency Workload Brake**:
 An audited Platform Administrator control that prevents new agent work for one Organization or the whole platform and may explicitly stop active work during an incident.
 _Avoid_: Organization deletion, service restart
+
+**Member Group**:
+A global, unlimited-depth, nestable authorization principal managed by the website administrator; a file-library grant on a group applies to that group and its whole descendant subtree, and a user's effective permission collects every group they belong to plus those groups' ancestors (ADR-0028). It stores no folder/project permission itself — only the user→group membership. Global: not owned by any Organization.
+_Avoid_: Team (the org-scoped flat grouping), Feishu department

README.md

@@ -2,7 +2,7 @@
 
 教研生产的数字化解决方案。核心思路:课程像 DAW / 剪辑软件那样有一个**结构化的工程文件**;coding agent 协助编辑它;一个 rule-based checker(类编译器)校验其合法性并给出 helpful fix hint。目标是把教研从一次性的文档,沉淀成**可累积、可校验、可复用的资产**。
 
-这是一个 **monorepo**。它的组织方式本身就表达了一条原则:**`spec/` 是上游的语义母本,其余部件是向它对齐的实现。**
+这是一个 **monorepo**。它的组织方式本身就表达了一条原则:**`docs/adr/` 是系统级决策的唯一权威来源,代码注释把关键不变量锚到 ADR 编号,可 grep。**
 
 ## 安装 `cph` 命令行
 
@@ -33,47 +33,40 @@ cph completions zsh > ~/.zfunc/_cph        # 或 bash/fish/powershell/elvish
 ```
 README.md          ← 本文件:总览 + 宪法(下面 5 条)
 CLAUDE.md          ← 全局 agent 操作手册(管整个 repo)
-docs/adr/          ← 系统级架构决策记录(跨部件,被 spec 契约引用)
-spec/              ← Lean 语义母本(自包含的 Lean 工程)。见 spec/README.md
+docs/adr/          ← 系统级架构决策记录(跨部件,决策的唯一权威来源)
+CONTEXT.md         ← 平台语言词汇表(术语与禁用说法)
 Cargo.toml         ← 仓库级 cargo workspace(实现部件共用,便于跨部件复用 crate)
-crates/            ← 实现:rule-based checker(向 spec 对齐)。见 crates/README.md
+crates/            ← 实现:rule-based checker(语义由 ADR 锚定)。见 crates/README.md
   cph-diag / cph-model / cph-schema / cph-typst   ← 可复用基础(模型/校验/typst 引擎)
   cph-check / cph-cli                             ← checker 本体 + `cph` 命令行
-render/            ← typst 渲染包 cph-render(母本的渲染后端之一,ADR-0005)
+render/            ← typst 渲染包 cph-render(checker 的渲染后端,ADR-0005)
 examples/          ← 样例工程文件(如 TH-141),流水线的真实输入
 hub/              ← SaaS Hub:飞书协作、org 管理、agent runtime 与生产部署
-(exporter/ …)     ← 将来的其他部件,平级于 spec/
+(exporter/ …)     ← 将来的其他部件,平级于 crates/
 ```
 
-`spec/` 与实现部件**物理分离、平级共存**:谁是上游、谁向谁对齐,一眼可见。
 实现部件共用一个仓库根的 cargo workspace,使基础 crate(模型、typst 引擎)能被
 未来部件(如 exporter)复用,而非各自重造。
 
 ## 宪法
 
-这 5 条是 `spec/` 这份语义母本的定位与约束,是本仓库一切工作的前提。
+这 4 条是本仓库的协作约定,是一切工作的前提。
 
-1. **角色 —— Lean 是研发侧的上游参照。**
-   `spec/` 用 Lean 编写,是开发者(领域专家)与 coding agent **共用**的 spec 工具,用来沉淀产品各部件的**语义**。它**不进入产品运行时**——产品里"站在 Lean 这个位置"的那个 checker 用什么技术实现,尚未决定;但那个东西的语义,先在 `spec/` 里固定下来。
+1. **角色 —— ADR 是决策真相。**
+   跨部件的语义决策只记录在 `docs/adr/`,一份决策一份 ADR,编号顺延、正文不改写历史。代码里的关键不变量用注释锚到 ADR 编号,保持可 grep。没有第二份权威文档。
 
-2. **对齐机制 —— Lean 只做上游参照。**
-   不做 extract / codegen,不派生 conformance test,CI 里**没有** spec→实现的 gate。实现对齐 spec,由"开发者 review + agent 巡逻 diff"这个人肉环节承载。
-   (CI 里的 `spec check` 只验 spec **自身**能否 type-check,即契约内部良构,不是 spec↔实现的对齐检查。)
+2. **对齐机制 —— 人肉承载,无机器兜底。**
+   CI 只验各部件自身良构(build / test / clippy),**没有**决策↔实现的一致性 gate。实现对齐 ADR,由"开发者 review + agent 巡逻 diff"这个人肉环节承载。发现漂移,报告它,不要默默让其中一边将就另一边。
 
-3. **资产性 —— 由 review 纪律承载,无机器兜底。**
-   这份仓库给你的是"精确、自洽、机器验内部良构的语义共识",**不是**"实现正确性保证"。spec 与实现之间那道缝,是我们自愿用人来守的——清醒地守,它就是资产;放任实现漂移而不回头同步,它就退化成最贵的过期文档。
+3. **形态 —— 自包含。**
+   凡 ADR 未明文规定的,开发者与 agent 双方都不该假设;遇到没覆盖的地方,**显式 surface** 出来让开发者决定。
 
-4. **形态 —— 它是人机共识的契约。**
-   契约必须**自包含**:凡契约未明文规定的,开发者与 agent 双方都不该假设。这比"文档"严格——type checker 会逼这份契约在结构上无洞。
-
-5. **深度判据 —— 只收录分歧点。**
-   一条语义该不该写进 Lean,取决于一句话:**"不写明,开发者与 agent 会不会各自做出不同假设?"** 会 → 进契约;显然的东西 / 纯 plumbing / 普通 CRUD 字段 → 不进(写进去只稀释信噪比、增加维护面)。
-   深度上限不是 Lean 的表达力,而是**你愿意在每次实现变更时手动回头同步的量**——写得比你能维护的更深,多出来的部分会率先过期、反过来误导实现。
+4. **深度判据 —— 只收录分歧点。**
+   一条语义该不该写进 ADR,取决于一句话:**"不写明,开发者与 agent 会不会各自做出不同假设?"** 会 → 进 ADR;显然的东西 / 纯 plumbing / 普通 CRUD 字段 → 不进(写进去只稀释信噪比、增加维护面)。
+   深度上限是**你愿意在每次实现变更时手动回头同步的量**——写得比你能维护的更深,多出来的部分会率先过期、反过来误导实现。
 
 ## CI
 
-`.gitea/workflows/spec-check.yml` 在每次 push / PR 时于 `spec/` 下跑 `lake build`,确保契约始终 type-check 通过(从第一天起就是"绿"的)。这是良构 gate,见宪法第 2 条。
-
 Rust checker 的本地与 CI 工具链由根 `rust-toolchain.toml` 固定;`.gitea/workflows/checker-check.yml`
 必须安装同一精确版本并执行 `cargo fmt --all --check`、Clippy `-D warnings` 与 workspace
 全测试。升级 Rust 时这两处必须在同一提交更新并通过完整 checker gate。

crates/README.md

@@ -1,7 +1,8 @@
 # crates/
 
-These crates implement the rule-based lesson checker that aligns to the
-semantic master in `spec/`: it reads an engineering-file (one lesson, ADR-0005)
+These crates implement the rule-based lesson checker whose semantics are
+pinned by the ADRs in `docs/adr/`: it reads an engineering-file (one lesson,
+ADR-0005)
 laid out per ADR-0008 (declarative `manifest.toml` + per-element
 `element.toml`), validates structure and content, and emits diagnostics.
 `cph-diag` (the shared diagnostic vocabulary), `cph-model` (the ADR-0008 loader),

crates/cph-check/src/lib.rs

@@ -19,13 +19,11 @@ const DEFAULT_TARGET: &str = "student";
 
 /// Severity of the render-coverage ("element ignored under a target") diagnostic.
 ///
-/// **PINNED to `warning` by the contract.** Mirrors the Lean master's
-/// `Spec.Courseware.renderIgnoredSeverity : Severity := .warning`
-/// (`spec/Spec/Courseware/Check/Diagnostic.lean`), itself citing ADR-0005: when a
+/// **PINNED to `warning` by ADR-0005:** when a
 /// `(kind, target)` pair has no render rule the checker reports that the element
 /// is ignored under that target and **does not block the export**. Naming the
-/// severity as a const makes "it is a warning, not an error" a greppable,
-/// alignable fact rather than an inline literal.
+/// severity as a const makes "it is a warning, not an error" a greppable
+/// fact rather than an inline literal.
 const RENDER_IGNORED_SEVERITY: Severity = Severity::Warning;
 
 /// The result of running [`check`] (or the check phases of [`build`]).
@@ -57,12 +55,12 @@ impl CheckReport {
 
     /// Whether any collected diagnostic is `Error`-severity.
     ///
-    /// **Legality decision (spec alignment).** `!has_errors()` is the
-    /// implementation of `Spec.Courseware.Legal` (`spec/Spec/Courseware/Check/Diagnostic.lean`):
-    /// a lesson is *legal* iff its diagnostics contain no error-level diagnostic
-    /// (warnings are non-blocking — see `Severity` / ADR-0010). There is no CI
-    /// gate enforcing this alignment (repo constitution); it is kept greppable
-    /// here so a reviewer can tie the orchestrator's gate to the Lean master.
+    /// **Legality decision (ADR-0010).** `!has_errors()` decides lesson
+    /// legality: a lesson is *legal* iff its diagnostics contain no error-level
+    /// diagnostic (warnings are non-blocking — see `Severity`). There is no CI
+    /// gate enforcing ADR↔implementation alignment (repo constitution); it is
+    /// kept greppable here so a reviewer can tie the orchestrator's gate to
+    /// the ADR.
     pub fn has_errors(&self) -> bool {
         self.diagnostics
             .iter()

crates/cph-diag/src/lib.rs

@@ -2,7 +2,7 @@
 //!
 //! Every other crate in the workspace depends on these types to report
 //! problems. The vocabulary is intentionally small and stable: a [`Severity`]
-//! (mirroring the Lean master), a closed set of machine-stable [`DiagCode`]s, an
+//! (two-valued, ADR-0010), a closed set of machine-stable [`DiagCode`]s, an
 //! optional [`SourceSpan`] pointing back at the offending source, and a
 //! [`Diagnostic`] tying them together with a human message and a fix hint.
 //!
@@ -17,32 +17,27 @@ use serde::Serialize;
 
 /// Severity of a diagnostic.
 ///
-/// **Mirrors `Spec.Courseware.Diagnostic.Severity`** in the Lean semantic
-/// master (`spec/Spec/Courseware/Check/Diagnostic.lean`), whose definition is
-/// exactly:
+/// **Pinned by ADR-0005 / ADR-0010: exactly two values.**
 ///
 /// ```text
-/// inductive Severity where
-///   | warning
-///   | error
+/// warning | error
 /// ```
 ///
-/// This two-valued shape is a **contract decision**, not an accident: the Lean
-/// module pins `Severity` to exactly `warning | error` and states the finer
-/// levels (`info` / `hint` / `note`) are deliberately undecided. We therefore
+/// This two-valued shape is a **contract decision**, not an accident: the
+/// finer levels (`info` / `hint` / `note`) are deliberately undecided, so we
 /// do **not** add an info/note level here. `error` blocks (the artifact is
 /// invalid); `warning` does not block (the artifact still exports, but with
 /// loss / an ignored element — e.g. ADR-0005's "missing render ⇒ warning").
 ///
-/// There is no CI gate enforcing this alignment (see the repo constitution);
-/// it is maintained by review, which is why this correspondence is documented
-/// here rather than only in the spec.
+/// There is no CI gate enforcing ADR↔implementation alignment (see the repo
+/// constitution); it is maintained by review, which is why the decision is
+/// documented here rather than only in the ADR.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize)]
 pub enum Severity {
     /// Non-blocking: the artifact still exports, but is lossy / has an ignored
-    /// element. Mirrors Lean `Severity.warning`.
+    /// element. ADR-0010 `warning`.
     Warning,
-    /// Blocking: the artifact is invalid. Mirrors Lean `Severity.error`.
+    /// Blocking: the artifact is invalid. ADR-0010 `error`.
     Error,
 }
 

crates/cph-model/src/lib.rs

@@ -3,9 +3,7 @@
 //! This crate is the **loader**, not the full checker. It reads
 //! `<root>/manifest.toml` (project / info / ordered `[[parts]]` / declared
 //! `[targets.*]`) and each part's `<root>/<path>/element.toml`, and produces an
-//! ordered [`Lesson`] — mirroring the Lean master's `Lesson = List (Element P)`
-//! (`spec/Spec/Courseware/Model/Lesson.lean`), where the order of `parts` carries
-//! teaching semantics.
+//! ordered [`Lesson`], where the order of `parts` carries teaching semantics.
 //!
 //! Scope boundaries (deliberately staying in lane):
 //! - It validates **structure** only: manifest shape, element.toml shape, and
@@ -23,7 +21,7 @@ use serde::{Deserialize, Serialize};
 
 /// An ordered, in-memory lesson loaded from an engineering file.
 ///
-/// Mirrors the Lean master's `Lesson = List (Element P)`: `parts` is an ordered
+/// `parts` is an ordered
 /// `Vec`, and that order is the lesson's order (ADR-0008 §"the lesson manifest
 /// is declarative" — the `[[parts]]` array order is the single source of truth).
 #[derive(Debug, Clone, PartialEq, Serialize)]
@@ -86,9 +84,8 @@ pub struct TargetConfig {
     /// with template `exports/<name>.typ` when no `[[steps]]` are given.
     pub steps: Vec<Step>,
     /// The **render-coverage declaration**: which element kinds this target
-    /// renders. Realizes `Spec.Courseware.TargetSpec.covers : KindId → Prop`
-    /// (`spec/Spec/Courseware/Export/Render.lean`) and ADR-0011's "render
-    /// coverage is a declaration, not a payload": the contract keeps *which
+    /// renders. Realizes ADR-0011's "render
+    /// coverage is a declaration, not a payload": the declaration keeps *which
     /// kinds a target renders* (used by the `renderIgnored` seed diagnostic),
     /// while the rendering "how" lives in the template/steps.
     ///
@@ -102,13 +99,10 @@ pub struct TargetConfig {
 
 /// The artifact an export target produces (ADR-0009/0011).
 ///
-/// **Mirrors `Spec.Courseware.Artifact`** in the Lean semantic master
-/// (`spec/Spec/Courseware/Export/Artifact.lean`), whose definition is exactly:
+/// **Pinned by ADR-0011** as an ADT with fields:
 ///
 /// ```text
-/// inductive Artifact where
-///   | singleFile (filepath : String)
-///   | fileTree (root : String) (outputs : String)
+/// Artifact = singleFile (filepath) | fileTree (root, outputs)
 /// ```
 ///
 /// ADR-0011 pinned the artifact as an ADT **with fields**: "what the product
@@ -120,20 +114,20 @@ pub struct TargetConfig {
 /// `"single-file"` → [`Artifact::SingleFile`], `"file-tree"` →
 /// [`Artifact::FileTree`].
 ///
-/// As with `cph-diag`'s `Severity`, there is no CI gate enforcing this
-/// alignment (see the repo constitution) — it is maintained by review, which is
-/// why the correspondence is documented here.
+/// As with `cph-diag`'s `Severity`, there is no CI gate enforcing ADR↔
+/// implementation alignment (see the repo constitution) — it is maintained by
+/// review, which is why the decision is documented here.
 #[derive(Debug, Clone, PartialEq, Eq, Serialize)]
 pub enum Artifact {
     /// One bundled document landing at `filepath` (relative to the engineering
-    /// root). Mirrors Lean `Artifact.singleFile`. The default artifact shape.
+    /// root). ADR-0011 `singleFile`. The default artifact shape.
     SingleFile {
         /// Where the single product is written (relative to the engineering
         /// root), e.g. `build/student.pdf`.
         filepath: PathBuf,
     },
-    /// A set of files under `root` matching the `outputs` glob. Mirrors Lean
-    /// `Artifact.fileTree`.
+    /// A set of files under `root` matching the `outputs` glob. ADR-0011
+    /// `fileTree`.
     FileTree {
         /// The output directory (relative to the engineering root).
         root: PathBuf,
@@ -156,14 +150,10 @@ impl Artifact {
 
 /// One typed build step (ADR-0011).
 ///
-/// **Mirrors `Spec.Courseware.Step`** in the Lean semantic master
-/// (`spec/Spec/Courseware/Export/Render.lean`), whose definition is exactly:
+/// **Pinned by ADR-0011** as an ADT:
 ///
 /// ```text
-/// inductive Step where
-///   | typstCompile (template : String)
-///   | shell (run : String)
-///   | assembleMarkdown (field : String)
+/// Step = typstCompile (template) | shell (run) | assembleMarkdown (field)
 /// ```
 ///
 /// A step is a *typed* operation (extensible): `TypstCompile` compiles a
@@ -183,20 +173,20 @@ impl Artifact {
 #[derive(Debug, Clone, PartialEq, Eq, Serialize)]
 pub enum Step {
     /// Compile a template file (relative to the engineering root) into the
-    /// artifact; the framework injects the manifest. Mirrors Lean
-    /// `Step.typstCompile`.
+    /// artifact; the framework injects the manifest. ADR-0011
+    /// `typstCompile`.
     TypstCompile {
         /// The template file to compile as main, e.g. `exports/student.typ`.
         template: PathBuf,
     },
-    /// Run a shell command — the escape hatch. Mirrors Lean `Step.shell`.
+    /// Run a shell command — the escape hatch. ADR-0011 `shell`.
     Shell {
         /// The command line to run.
         run: String,
     },
     /// Assemble a single-file markdown deliverable by concatenating each
-    /// element's `field` markdown content file in `[[parts]]` order. Mirrors
-    /// Lean `Step.assembleMarkdown` (ADR-0015). Not a typst build — the
+    /// element's `field` markdown content file in `[[parts]]` order. ADR-0011
+    /// `assembleMarkdown` (ADR-0015). Not a typst build — the
     /// framework owns the read/concatenate/write itself.
     AssembleMarkdown {
         /// The per-element markdown content field to assemble (e.g. `slides`,
@@ -226,12 +216,11 @@ pub struct Project {
 
 /// `[info]` table (passed through to render targets verbatim).
 ///
-/// **Mirrors `Spec.Courseware.Info`** in the Lean semantic master
-/// (`spec/Spec/Courseware/Model/Info.lean`): the *canonical* model whose
+/// The *canonical* model whose
 /// `authors` is always a list. The authoring-surface form (string-or-array
 /// `author`) is the separate [`RawInfo`] / [`RawAuthor`], normalized into this
-/// at the load boundary — mirroring the Lean `RawInfo` / `RawAuthor` split. No
-/// CI gate enforces this alignment (repo constitution); it is kept greppable.
+/// at the load boundary. No
+/// CI gate enforces ADR↔implementation alignment (repo constitution); it is kept greppable.
 #[derive(Debug, Clone, PartialEq, Eq, Serialize)]
 pub struct Info {
     /// Lesson title.
@@ -240,7 +229,6 @@ pub struct Info {
     /// so this is a list, not a single name. Empty when `[info]` declares no
     /// `author`. The on-disk `author` accepts either a bare string (one author)
     /// or an array of strings (see [`RawAuthor`]); both load into this `Vec`.
-    /// Mirrors Lean `Info.authors : List String`.
     pub authors: Vec<String>,
 }
 
@@ -290,8 +278,7 @@ struct RawProject {
     name: String,
 }
 
-/// The authoring-surface `[info]` (mirrors Lean `RawInfo` in
-/// `spec/Spec/Courseware/Model/Info.lean`): the raw form that exists for
+/// The authoring-surface `[info]`: the raw form that exists for
 /// fill-in convenience, normalized into the canonical [`Info`] at the load
 /// boundary. Not the form the rest of the model traffics in.
 #[derive(Debug, Deserialize)]
@@ -301,7 +288,7 @@ struct RawInfo {
 }
 
 /// On-disk `author`: either a single name (`author = "…"`) or a list
-/// (`author = ["…", "…"]`). Mirrors Lean `RawAuthor`: a fill-in convenience whose
+/// (`author = ["…", "…"]`). A fill-in convenience whose
 /// string-or-array union lives **only** at the load boundary — [`RawAuthor::into_vec`]
 /// folds it into the canonical [`Info::authors`] `Vec`, after which it never appears.
 #[derive(Debug, Deserialize)]
@@ -312,7 +299,7 @@ enum RawAuthor {
 }
 
 impl RawAuthor {
-    /// Flatten to the ordered author list (Lean `RawAuthor.normalize`): a single
+    /// Flatten to the ordered author list: a single
     /// name becomes a one-element list; a list passes through verbatim.
     fn into_vec(self) -> Vec<String> {
         match self {

docs/adr/0028-member-group-management-and-resolution.md

@@ -0,0 +1,153 @@
+# ADR 0028: Member Group Management And Resolution
+
+## Status
+
+Accepted.
+
+## Context
+
+ADR-0020 fixed `Organization` as the tenant root and ADR-0019 pinned the
+principal-set permission model. The file library (《文件库-接口契约.md》) computes
+effective permission over two principal kinds — `USER` and `GROUP` — and consumes
+the group side through a single read-only port, `GroupResolver`
+(`resolveMemberGroupIds(userId) → groupIds[]`, contract C2/G2).
+
+The contract's v0.1 proposal framed the Group system as a *separate HTTP service*
+owned by another team, consumed read-only. In practice the schema now carries the
+group tables directly in the hub database (`MemberGroup`, `MemberGroupMembership`,
+`MemberGroupClosure` — a global, unlimited-depth, closure-backed hierarchy), and
+the product requirement is to build **group management in the backend admin**, not
+to integrate a foreign service. Until this ADR, nothing read or wrote those tables:
+the live `GroupResolver` was a transitional implementation reading flat hub `Team`
+membership, and the admin "Group 管理" panel actually managed `Team`.
+
+This ADR settles the semantics needed to make the `MemberGroup` tables the real,
+in-hub group system.
+
+## Decision
+
+### Group system is in-hub, not a foreign service
+
+`MemberGroup` is the platform's global member-group principal. It lives in the hub
+database and is managed through the `/database` backend. The contract's "separate
+service" framing was an unfrozen v0.1 proposal; the implementation aligns to the
+tables that were actually built. The `GroupResolver` port stays — an external
+`HUB_GROUP_SERVICE_URL` HTTP implementation remains a supported override — but the
+default implementation reads the in-hub `MemberGroup` closure.
+
+### Authority: website administrator only
+
+Group create/delete and member add/remove are restricted to the **website
+administrator**, defined (consistently with the rest of the file library, D19/C4
+adaptation) as an `OWNER`/`ADMIN` of the silo Organization (`isWebsiteAdmin` in
+`filelib/guards.ts`). ADR-0023's `PlatformIdentity` is the future "true" platform
+control plane; the file library uniformly uses org OWNER/ADMIN today and this
+feature stays consistent with that. Reading groups for the authorization selector
+(`/groups/search`) is **not** admin-gated — picking a group to grant is a Manage
+holder's ability, not an administrator's.
+
+### Resolution semantics (the crux)
+
+`resolveMemberGroupIds(user)` returns the user's **active direct groups ∪ the
+active ancestors of those groups**, deduplicated (the closure's depth-0 self row
+makes each direct group its own ancestor). This is the single query the permission
+engine relies on; equivalently: a grant placed on group G applies to members of G
+and of every descendant of G (requirement 3.2 — permission flows down the tree, so
+resolution collects up the tree). It is computed **live, never cached** (contract
+D4/G4): a membership change is visible on the very next protected request.
+
+MemberGroup is global (no `organizationId`), so resolution is not org-scoped.
+
+### Soft delete via `archivedAt`, cascading the subtree
+
+Delete is soft: `MemberGroup.archivedAt` is a tag. Deleting a group
+cascade-soft-deletes its **whole subtree** (walk `MemberGroupClosure` where
+`ancestorId = G`, stamp `archivedAt` on each active descendant) — an application
+operation, not a DB constraint. Closure and membership rows are **retained**;
+resolution and listing filter by `archivedAt`, so an archived group and everything
+under it stop contributing to permission at once.
+
+### Closure maintenance
+
+The closure is maintained on **create**: insert `(G, G, 0)`, then for a parent `P`
+insert `(a.ancestorId, G, a.depth + 1)` for every `a` in
+`closure where descendantId = P`. v1 does **not** support reparenting a group
+(moving it under a new parent). The schema reserves reparent (closure rebuild plus
+the cycle guard "reject a new parent inside the moved subtree"); it is a follow-on.
+
+### Rename and description edits are in scope; reparent stays out
+
+A group's `name` and `description` are mutable by the website administrator
+(`PATCH /database/api/groups/:id`, audited as `group.update`). This is deliberately
+separated from reparent: renaming touches **no** closure row and cannot create a
+cycle, so it carries none of the invariant risk that keeps reparent out of v1. The
+endpoint therefore **rejects** a `parentId` field outright rather than ignoring it,
+so a future reparent cannot arrive silently through this route. Passing an empty
+`description` clears it; omitting a field leaves it unchanged.
+
+### Restore is deliberately asymmetric with delete
+
+Archived groups stay visible to the administrator (`GET
+/database/api/groups?includeArchived=1` returns them carrying `archivedAt`; the
+console tags and greys them) and can be restored (`POST
+/database/api/groups/:id/restore`, audited as `group.restore`).
+
+Restore is **not** the mirror image of delete. Delete cascades down the whole
+subtree; restore un-archives **the group plus every archived ancestor of it, and
+nothing below it**:
+
+- Restoring the ancestor chain is **mandatory**, not a convenience. An active group
+  whose parent is archived has no path in the tree, and the `depth` derivation
+  (closure row count) presumes "an active group's ancestors are active" — the
+  invariant that cascade-delete establishes. Restoring a node alone would break it.
+- The subtree is deliberately **left archived**. A group's descendants may have been
+  archived for reasons of their own, and one click should not silently re-grant
+  permission across a whole historical branch. Descendants remain visible in their
+  archived state and are each restored explicitly.
+
+Restore takes effect immediately, like every other membership change (D4/G4): the
+group resumes contributing permission on the next resolution.
+
+An archived group is **readable but not writable**. Its membership rows are never
+revoked by archiving, so `listMembers` succeeds on an archived group — the console
+must be able to show *who was in it* before deciding whether to restore it. Every
+mutation, by contrast, still requires an active group (`requireActiveGroup` → 404):
+rename, child creation, and member add/remove all reject. The group is inert for
+permission purposes and frozen for editing, but not hidden and not forgotten.
+
+### Member picker reads global users, admin-only
+
+`GET /database/api/users/search` backs the "add member" picker: it matches `User`
+by display name or Feishu open id and is gated to the website administrator, the
+same authority that may add members. It widens no existing capability — adding a
+member already accepts **any** global user (`resolveUser` does not require an org
+membership), so the endpoint only replaces blind id entry with search. It is
+deliberately **not** opened to the non-admin authorization-selector audience that
+`/groups/search` serves: choosing a group to grant is a Manage-holder action,
+whereas enumerating people is not. `excludeGroupId` filters out the target group's
+active members so the picker cannot surface a candidate that must 409.
+
+### Audit is written in-hub
+
+The contract (C3 §6.3) originally deferred group actions to the foreign Group
+service's own audit. With the group system in-hub, group mutations are audited
+through the existing file-library sink (`filelib/audit.ts`, same-transaction
+`AuditEntry`) under the silo Organization — `MemberGroup` has no `organizationId`,
+so the audit row is attributed to the silo org. New actions: `group.create`,
+`group.update`, `group.delete`, `group.restore`, `group.member_add`,
+`group.member_remove`; new audit object type `group`.
+
+## Consequences
+
+- The default `GroupResolver` becomes the in-hub `MemberGroup` closure reader.
+  `createTeamGroupResolver` is retained but deprecated (no longer wired); existing
+  flat-Team group grants no longer resolve for the file library.
+- Group grants take effect in real time through the existing `effectiveRole`
+  reducer (P6) with no change to the permission algebra — only the set of group ids
+  fed to it changes.
+- v1 omits reparent; the closure invariants above must hold whenever reparent is
+  added later (rebuild descendants' ancestor rows, reject cycles).
+- Group management is an admin-only surface; the authorization selector is not.
+- Numeric limits (max depth, max members) and a hard-delete/restore path remain
+  follow-on operational decisions; they must not weaken the archived-filter,
+  admin-authority, or live-resolution invariants fixed here.

docs/adr/0029-web-surface-frontend-backend-separation.md

@@ -0,0 +1,132 @@
+# ADR 0029: Web Surfaces Are Static SPAs; the Hub Serves JSON Only
+
+## Status
+
+Accepted.
+
+## Context
+
+The Hub exposes three browser surfaces: the org-admin console (`/admin`), the
+teacher-facing file library (`/app`), and the database admin back office
+(`/database`). They arrived at different times and diverged in how HTML reached
+the browser.
+
+`/admin` and `/app` were already separated: the backend serves a prebuilt static
+`index.html` and never inspects the request; all data flows through JSON
+endpoints. `/database` was not. Roughly 1770 lines across four modules
+(`renderDashboard`/`renderLoginPage` in `routes/databaseRoutes.ts`,
+`routes/adminPanels.ts`, `routes/libraryBrowser.ts`, `routes/libraryPage.ts`)
+assembled HTML template strings server-side, reading the session cookie and
+querying Prisma inside the page handler, with layout expressed as inline
+`style="…"` attributes and behavior as `<script>` text.
+
+A prior migration (`12628c9`) introduced a fourth frontend project,
+`hub/database-admin/`, intended to replace those pages. It was never wired up:
+the concrete route `/database/dashboard` is more specific than the SPA wildcard
+`/database/*`, so the server-rendered handler always won and the SPA's dashboard
+was unreachable. That project's file header claimed the SPA served the dashboard
+and that `/database/config` existed; neither was true. The `npm run build` script
+also never built it, so the `existsSync` guard in `database/static.ts` failed on
+every deploy and the shell was permanently disabled.
+
+Duplicated visual rules were the practical cost: card padding and type sizes were
+restated in each render module, and only the CSS variables in `routes/uiTheme.ts`
+were genuinely shared.
+
+## Decision
+
+**No Hub HTTP handler renders HTML.** Every browser surface is a prebuilt static
+SPA. Page handlers send a byte-identical `index.html` that does not depend on the
+request; all per-user and per-request data is fetched by the client from JSON
+endpoints under `/api/*` or `/database/api/*`.
+
+**`/app` and `/database` are one frontend project, `hub/filelib-web`, built once
+and mounted at two prefixes.** They share the file library browser, the session
+layer, the toast host, and the design tokens; splitting them would duplicate all
+of it. `hub/database-admin` is deleted — superseded before it ever served a
+request.
+
+Two configuration constraints follow from co-hosting two SvelteKit SPAs on one
+Fastify instance, and are load-bearing:
+
+- `filelib-web` sets `appDir: '_filelib'`. The SvelteKit default `_app` collides
+  with the root `/_app/*` asset route that `admin-web` owns
+  (`src/admin/static.ts`); Fastify rejects duplicate routes at startup, so the
+  collision is a boot failure, not a silent misroute.
+- `filelib-web` sets `paths.relative: false`. The same `index.html` is served at
+  different URL depths (`/app`, `/database/dashboard/users`), so relative asset
+  paths would resolve against the wrong base.
+
+**Client-side navigation uses real URL routes, not hash fragments or hidden
+sections.** The six back-office tabs are `/database/dashboard`,
+`/database/dashboard/library`, `/users`, `/groups`, `/search`, `/settings`.
+Refresh preserves position and links are shareable — the previous
+`location.hash` + `display:none` scheme lost both.
+
+Concrete routes must be registered before the SPA wildcards. This is an ordering
+obligation on `database/plugin.ts`, not an incidental detail: the earlier
+`/database/dashboard` shadowing bug is exactly what happens when a concrete page
+route outranks the fallback.
+
+## Consequences
+
+- Authorization is enforced only by the JSON endpoints. A client-side guard (the
+  `isWebsiteAdmin` check in the dashboard layout) is a navigation convenience and
+  carries no security weight; every endpoint keeps its own `fail closed` guard.
+- `/database/api/stats` is a new endpoint carrying what `loadDashboardStats` used
+  to compute inline. It requires silo org `OWNER`/`ADMIN` because it aggregates
+  org-wide counts and the audit stream rather than a per-node permission view.
+- `/database/api/me` grew `displayName` and `avatarUrl`. Anything the old page
+  handler read from Prisma to render chrome has to become part of a JSON payload
+  or it is simply unavailable: the sidebar identity strip showed a raw `userId`
+  until these were added. When migrating a server-rendered surface, the data the
+  template closed over is part of the contract being ported, not an incidental
+  detail of the old implementation.
+- Editing a page no longer requires a Hub restart in development; `vite dev`
+  serves the frontend and proxies data requests to the Hub. In production the
+  `index.html` is cached in memory at startup, so a frontend rebuild does require
+  a restart.
+- Deploy scripts and the silo rate-limit exemption list name `filelib-web` and
+  `/_filelib/*`. Adding a fourth surface means picking another `appDir` and
+  extending that list.
+- The design system is one file, `filelib-web/src/app.css`: an `@theme` block for
+  tokens plus an `@layer components` block for the shared component classes
+  (`.btn`, `.panel`, `.input`, `.select`, `.list`, `.tag`, `.quiet`, …).
+  `routes/uiTheme.ts` is deleted; both halves live there now.
+
+  The first cut of this migration kept only the tokens and restated button,
+  input, and panel styling inline in every component. That reproduced the
+  duplication the old code had — the admin panels visibly regressed — so the
+  component layer was ported too. Components carry layout utilities; they do not
+  restate component styling. The one admitted exception is a data-derived value
+  (tree indent computed from `depth`), which cannot be a static class.
+
+  The icon set (`lib/Icon.svelte`, 13 paths) is likewise shared rather than
+  restated. It came from `adminPanels.ts`; Group nodes deliberately use a
+  two-person silhouette, not a folder glyph, because `MemberGroup` and the file
+  library's `FOLDER`/`PROJECT` are unrelated hierarchies (ADR-0028, ADR-0021).
+
+- **A migrated surface is only done when its endpoint coverage matches.** Two
+  panels were rebuilt from a superficially similar component that predated the
+  migration rather than from the server module they replaced, and the mismatch
+  was invisible in the rendered page:
+
+  - Group management called 5 of 8 endpoints. Rename (`PATCH`),
+    `?includeArchived=1`, `/restore`, and `/users/search` had no entry point, so
+    a soft-deleted group could not be restored through the UI at all even though
+    the backend fully supported it.
+  - The library browser dropped the `授权` tab entirely — `GET/PUT/DELETE
+    .../grants` and `PUT .../independent-permission` had no caller. Permission
+    editing is the point of the back office, and it was unreachable.
+
+  Diffing the route table against the frontend's `api()` call sites catches this;
+  reading the new page does not.
+
+## Deferred
+
+- `/admin` (admin-web) stays a separate project. It has its own design language
+  (`saas-*` classes, `surface-*`/`primary-*` scales) and a different audience;
+  merging it is not motivated by shared code.
+- The `search` and `settings` tabs remain placeholders, as they were server-side.
+- Serving `/admin` and `/database` from a single SPA, which would remove the
+  `appDir` collision constraint entirely.

docs/adr/0030-project-grants-always-live.md

@@ -0,0 +1,43 @@
+# ADR 0030: Project Grants Are Always Live; The Independent-Permission Toggle Is Removed
+
+## Status
+
+Accepted. Supersedes the file-library contract rule **D11 / P5** (《文件库-接口契约.md》,
+since deleted; recoverable from git history) which introduced the per-project
+"独立权限" (independent permission) switch.
+
+## Context
+
+D11 gave each PROJECT a toggle (`FileLibProjectSettings.independentPermissionsEnabled`,
+default off). While off, project-level non-creator grants were **frozen** — present in
+`FileLibGrant` but excluded from `effectiveRole`; ancestor-chain grants and the creator's
+auto-grant were unaffected. The intent was to support two workflows: "project follows the
+folder's ACL" (off) vs "project has its own ACL" (on).
+
+In practice the toggle surprised operators twice: grants appeared to "not work" until
+someone found and flipped a per-project switch buried in the 概览 tab, and the frozen state
+was indistinguishable from missing grants in the UI. The product decision is that
+project-level grants should simply always be live.
+
+## Decision
+
+- **Project-level grants always participate in `effectiveRole`.** The freeze branch in
+  `hub/src/database/filelib/permission.ts` is deleted; `EffectiveRoleInput` no longer
+  carries `independentPermissionsEnabled`.
+- **The toggle surface is removed end-to-end**: `PUT /database/api/projects/:id/independent-permission`,
+  `grantService.setIndependentPermission`, the `independentPermission` field in the node
+  detail DTO, and the 概览 tab switch in `filelib-web`.
+- **`FileLibProjectSettings` becomes vestigial.** The table stays (existing rows are
+  ignored, no data migration); new projects no longer get a default row. It may be dropped
+  in a future migration once nothing references it.
+- Audit action vocabulary `independent_enable` / `independent_disable` is retained for
+  reading historical audit entries; no new entries are produced.
+
+Behavior change for existing deployments: projects whose toggle was off now have their
+project-level grants effective immediately — this is the intended effect of the decision.
+
+## Consequences
+
+- Permission semantics shrink to the single P6 rule: `effective = max(grants on self ∪
+  ancestors for user ∪ resolved groups)`, no exceptions by node kind.
+- One less state dimension in tests and in the admin UI.

docs/adr/0031-filelib-recycle-bin-and-recent-visits.md

@@ -0,0 +1,58 @@
+# ADR 0031: File Library Recycle Bin And Recent-Visit Tracking
+
+## Status
+
+Accepted.
+
+## Context
+
+The teacher app (`/app`) gains a left navigation rail with three entries: 文件库 /
+最近打开 / 回收站. Two of them need semantics that no prior decision covers:
+
+- **回收站 (recycle bin)**: D15 defined soft delete (mark `deletedAt` on the node only;
+  a node is invisible when any ancestor is deleted) but never defined listing, restore,
+  or permanent deletion.
+- **最近打开 (recent visits)**: nothing tracks opens.
+
+## Decision
+
+### Recycle bin
+
+- **List**: shows nodes with `deletedAt != null` whose **ancestors are all active**
+  (the topmost deleted node per branch; descendants of a deleted node are represented
+  by it and not listed separately).
+- **Visibility/auth**: a bin entry is visible to (a) the website administrator, or
+  (b) any actor holding an active MANAGE grant **on the deleted node itself**
+  (grants stay live through soft delete, so this is a plain grant query — no chain
+  walk, no inheritance; the bin is a management surface, not a browsing surface).
+- **Restore** clears `deletedAt` on that node only (D15 symmetry: delete marks one
+  node, restore unmarks one node). The subtree becomes visible again immediately.
+  Same auth as the list entry. Audited (`folder_restore` / `project_restore`).
+- **Permanent delete (彻底删除)** is **website-administrator only**: hard-deletes the
+  node **and its whole subtree** (descendants enumerated via the `pathIds` materialized
+  path, deleted deepest-first because the self-FK is `ON DELETE RESTRICT`), in one
+  transaction, with one audit entry (`node_purge`, detail carries removed count).
+  Grants/settings/export-jobs cascade. There is no recovery; the UI must confirm
+  explicitly.
+
+### Recent visits
+
+- **Model**: `FileLibRecentVisit(organizationId, userId, nodeId, filePath, openedAt)`,
+  unique on `(organizationId, userId, nodeId, filePath)` with `filePath` defaulting to
+  `""` (Postgres unique indexes treat NULLs as distinct). `filePath = ""` means the
+  visit is the node itself (drill into folder/project); non-empty means a file preview
+  inside that project.
+- **Recording is client-driven**: the teacher app POSTs after a successful open
+  (folder drill, project open, file preview). The endpoint requires VIEW on the node
+  (D8: no VIEW → 404, leaking nothing). Upsert semantics: re-opening refreshes
+  `openedAt`. No audit entries — this is a per-user read model, not a权限-sensitive
+  mutation.
+- **List**: the actor's own most recent 20, `openedAt` desc. Entries whose node is
+  deleted **or has any deleted ancestor** are filtered out (D8/D15 visibility holds
+  on every surface). Names are read live from `FileLibNode` (no denormalization).
+
+## Consequences
+
+- No change to existing permission algebra; both features are additive surfaces.
+- The bin deliberately does not offer per-owner bins or inherited-MANAGE visibility —
+  if real usage demands it, that is a new decision.

docs/adr/0032-remove-recent-visit-module.md

@@ -0,0 +1,30 @@
+# ADR 0032: Remove The Recent-Visit Module
+
+## Status
+
+Accepted. **Supersedes the "Recent visits" half of ADR-0031** (the recycle-bin half
+is unaffected and remains in force).
+
+## Context
+
+ADR-0031 (same day) introduced 最近打开: a `FileLibRecentVisit` table, client-driven
+visit recording, and a rail entry in the teacher app. After seeing it live, the product
+call is that the module is not wanted — it adds a tracking surface, a table, and rail
+noise without a compelling teacher workflow behind it.
+
+## Decision
+
+The recent-visit module is removed end-to-end:
+
+- `FileLibRecentVisit` is dropped (hand-written migration
+  `20260731090000_drop_filelib_recent_visit`; the table was created the same day and
+  held no production data).
+- `recentService` / `recentRoutes` (`/database/api/recent`) and the `RecentView`
+  component are deleted; the rail in `/app` keeps only 文件库 / 回收站.
+- `GridLibraryView` visit recording and the `navTarget` navigation entry go with it.
+- The `role` field added to breadcrumb entries for ADR-0031 is **kept** — it is a
+  cheap, additive field on an existing API and independent of the removed module.
+
+If recent-visit tracking comes back as a requirement, it is a new decision (and
+should then define why client-driven tracking is worth its surface) rather than a
+revival of this one.

docs/adr/0033-restore-deduplicates-name.md

@@ -0,0 +1,26 @@
+# ADR 0033: Restore De-Duplicates The Node Name On Sibling Conflict
+
+## Status
+
+Accepted.
+
+## Context
+
+ADR-0031 defined restore as "clear `deletedAt` on that node only". It did not cover
+the case where a same-name sibling was created **after** the deletion: D14's partial
+unique index (active siblings, case-insensitive) then rejects the restore with a 409
+`conflict`, leaving the entry permanently stuck in the bin — unrecoverable for
+non-admin users (who cannot purge) and cryptic for admins.
+
+## Decision
+
+Restore never fails on a name conflict. Before clearing `deletedAt`, the service
+checks active siblings; if the node's name is taken, it restores as
+`原名(已恢复)`, then `原名(已恢复 2)`, …, first free key wins (suffix is included
+in the `NODE_NAME_MAX_LENGTH` budget by truncating the base). The rename is part of
+the same transaction and is recorded in the restore audit entry as
+`{ name, renamedFrom }`. The API returns the final name so the UI can tell the user.
+
+Rationale: the bin's purpose is recovery; a restore that can deadlock on naming is a
+trap, not a safeguard. Users who care about the name can rename afterwards (they have
+MANAGE by definition of bin visibility).

docs/adr/0034-purge-follows-manage.md

@@ -0,0 +1,28 @@
+# ADR 0034: Permanent Delete Follows MANAGE, Not Website Administrator
+
+## Status
+
+Accepted. **Supersedes one clause of ADR-0031**: "Permanent delete (彻底删除) is
+website-administrator only".
+
+## Context
+
+ADR-0031 gated 彻底删除 to the website administrator as a high-risk-operation
+precaution. The product call is that this is inconsistent with the rest of the
+permission model: soft delete already requires only MANAGE on the node, and a
+MANAGE holder who can delete a node into the bin should also be able to purge it —
+the authority that grants deletion grants destruction. Admin-only purge strands
+non-admin managers with bins they cannot empty.
+
+## Decision
+
+Permanent delete uses **the same visibility rule as the bin entry itself**: website
+administrator, or an actor with an active MANAGE grant on the deleted node (direct
+grant, USER or resolved GROUP). Anyone else gets 404 (D8). The double confirmation
+in the UI and the `node.purge` audit entry are unchanged.
+
+## Consequences
+
+- Purge auth = restore auth = bin-entry visibility: one rule, three surfaces.
+- The operation remains irreversible and audited; no new capability is granted to
+  anyone who could not already delete the node (soft) and see it in the bin.

docs/adr/0035-restore-keeps-original-name.md

@@ -0,0 +1,20 @@
+# ADR 0035: Restore Keeps The Original Name; Conflict Is A Clear Error
+
+## Status
+
+Accepted. **Supersedes ADR-0033** (restore de-duplicates the node name on sibling
+conflict).
+
+## Context
+
+ADR-0033 made restore auto-rename to `原名(已恢复)` on sibling name conflict so
+restore never fails. In practice the suffix is unwanted noise - operators expect the
+original name back and prefer to resolve conflicts themselves.
+
+## Decision
+
+Restore clears `deletedAt` and keeps the node's **original name**. If an active
+sibling now occupies the same name (D14 partial unique index), the service throws a
+`409 name_conflict_on_restore` with a human-readable message ("同名节点已存在，请先
+重命名现有节点再恢复") - no silent renaming, no suffix. The restore audit records
+the original name only.

docs/para-26071100-feishu-setup.md

@@ -32,7 +32,7 @@ App ID 通常以 `cli_` 开头，可以写入交付单。App Secret 必须通过
 | 接收群聊中 @ 机器人的消息 | `im:message.group_at_msg:readonly` |
 | 以应用身份发送消息 | `im:message:send_as_bot` |
 | 读取触发消息和线程上下文 | `im:message:readonly` |
-| 获取与上传图片或文件 | `im:resource` |
+| 获取消息中的图片/文件，并向飞书上传图片或文件（含 Agent 回答中的图片发送） | `im:resource` |
 | 添加、删除消息表情回复 | `im:message.reactions:write_only` |
 | 获取用户基本信息 | `contact:user.base:readonly` |
 | 获取用户基本资料 | `contact:user.basic_profile:readonly` |
@@ -66,6 +66,9 @@ Educraft 机器人以应用身份调用上述 API，因此这些 scope 全部放
 
 如果 API 调试台提示缺少更细粒度权限，请把错误提示和发生时间截图给部署人员。不要自行开通通讯录全量读取等超出本表的权限。
 
+说明：`im:resource` 既用于下载用户发来的图片/文件，也用于 Agent 回复时把本地或远程图片上传为飞书 `image_key` 后嵌入消息卡片。缺少该权限时，带图回答会发送失败或降级为无图文本。已开通该 scope 的存量应用一般无需新增权限，但若权限尚未随最新版本发布，请创建新版本并审核发布。
+
+
 ## 4. 配置事件与卡片回调
 
 进入“事件与回调”。

hub/.gitignore

@@ -5,6 +5,13 @@ dist/
 .env.*
 !.env.example
 .secrets/
+.dev-keyring.json
+.dev-workspaces/
+.dev-skills/
+.filelib-repos/
 admin-web/node_modules/
 admin-web/build/
 admin-web/.svelte-kit/
+filelib-web/node_modules/
+filelib-web/build/
+filelib-web/.svelte-kit/

hub/deploy/deploy_fleet_release.sh

@@ -82,10 +82,11 @@ REMOTE
   rsync -az --delete \
     --exclude node_modules --exclude dist --exclude .env \
     --exclude admin-web/node_modules --exclude admin-web/build --exclude admin-web/.svelte-kit \
+    --exclude filelib-web/node_modules --exclude filelib-web/build --exclude filelib-web/.svelte-kit \
     -e "ssh ${SSH_OPTS[*]}" \
     "$REPO_ROOT/hub/" "$DEPLOY_USER@$HOST:$HUB_DIR/"
 
-  echo "[fleet] npm ci + build (tsc + admin-web SPA)"
+  echo "[fleet] npm ci + build (tsc + admin-web & filelib-web SPAs)"
   ssh "${SSH_OPTS[@]}" "$DEPLOY_USER@$HOST" bash -s <<REMOTE
 set -euo pipefail
 flock /var/lock/cph-hub-release-publish bash -c '
@@ -97,9 +98,11 @@ flock /var/lock/cph-hub-release-publish bash -c '
   cd "$HUB_DIR"
   PUPPETEER_SKIP_DOWNLOAD=1 npm ci
   npm ci --prefix admin-web
+  npm ci --prefix filelib-web
   npm run audit:production
   npm run build
   test -f admin-web/build/index.html
+  test -f filelib-web/build/index.html
   touch "$RELEASE_DIR/.complete"
 '
 REMOTE

hub/deploy/deploy_platform.sh

@@ -60,10 +60,11 @@ if [ "$release_ready" = false ]; then
     -e "ssh ${SSH_OPTS[*]}" \
     "$REPO_ROOT/hub/" "$DEPLOY_USER@$HOST:$HUB_DIR/"
 
-  # 2. Install deps (hub + admin-web), audit hub prod, build tsc + SPA, mark complete.
-  # `npm run build` → tsc then admin:build → admin-web/build for registerStaticSpa.
+  # 2. Install deps (hub + both SPAs), audit hub prod, build tsc + SPAs, mark complete.
+  # `npm run build` → tsc then admin:build + filelib:build → admin-web/build and
+  # filelib-web/build for registerStaticSpa / registerDatabaseSpa.
   ssh "${SSH_OPTS[@]}" "$DEPLOY_USER@$HOST" \
-    "cd '$HUB_DIR' && PUPPETEER_SKIP_DOWNLOAD=1 npm ci && npm ci --prefix admin-web && npm run audit:production && npm run build && touch '$RELEASE_DIR/.complete'"
+    "cd '$HUB_DIR' && PUPPETEER_SKIP_DOWNLOAD=1 npm ci && npm ci --prefix admin-web && npm ci --prefix filelib-web && npm run audit:production && npm run build && touch '$RELEASE_DIR/.complete'"
 fi
 
 # 3. Ensure the service is installed (idempotent), then restart.

hub/filelib-web/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "filelib-web",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite dev",
+    "build": "vite build",
+    "preview": "vite preview",
+    "prepare": "svelte-kit sync || echo ''",
+    "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json"
+  },
+  "devDependencies": {
+    "@sveltejs/adapter-static": "^3.0.10",
+    "@sveltejs/kit": "^2.63.0",
+    "@sveltejs/vite-plugin-svelte": "^7.1.2",
+    "@tailwindcss/vite": "^4.3.2",
+    "svelte": "^5.56.1",
+    "svelte-check": "^4.6.0",
+    "tailwindcss": "^4.3.2",
+    "typescript": "^5.7.0",
+    "vite": "^8.0.16"
+  }
+}

hub/filelib-web/src/app.css

@@ -0,0 +1,263 @@
+@import "tailwindcss";
+
+/* 全局 UI 主题令牌(与 hub 端 uiTheme.ts 同源) */
+@theme {
+  --color-bg: #fcfcfb;
+  --color-panel: #ffffff;
+  --color-sidebar: #f7f7f5;
+  --color-ink: #1a1a18;
+  --color-ink-2: #6b6a66;
+  --color-ink-3: #9c9b96;
+  --color-line: #ecece8;
+  --color-line-soft: #f1f1ee;
+  --color-hover: #f4f4f1;
+  --color-selected: #ebebe7;
+  --color-accent: #1a1a18;
+  --color-accent-hover: #333330;
+  --color-danger: #a13a33;
+  --color-guide: #e9e9e5;
+  --color-diff-add-bg: #f3f6f2;
+  --color-diff-add-text: #4a6741;
+  --color-diff-del-bg: #f8f2f1;
+  --color-diff-del-text: #a13a33;
+}
+
+html,
+body {
+  height: 100%;
+}
+
+body {
+  background: var(--color-bg);
+  color: var(--color-ink);
+  font-family:
+    "Inter",
+    -apple-system,
+    "Segoe UI",
+    "PingFang SC",
+    "Microsoft YaHei",
+    sans-serif;
+  font-size: 14px;
+  line-height: 1.65;
+  -webkit-font-smoothing: antialiased;
+}
+
+.font-mono {
+  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+}
+
+/* 共享组件层(ADR-0029)。
+ *
+ * 从已删除的 hub/src/database/routes/uiTheme.ts 原样搬来。组件只带布局工具类,
+ * 不重述这里的组件样式 —— 第一版迁移只搬了上面的 @theme 令牌,把按钮/输入框/
+ * 面板样式在每个组件里内联重写了一遍,后台随即明显退化。 */
+@layer components {
+  .btn {
+    display: inline-flex;
+    align-items: center;
+    gap: 5px;
+    padding: 6px 14px;
+    border-radius: 8px;
+    border: 1px solid var(--color-line);
+    background: var(--color-panel);
+    color: var(--color-ink);
+    font-size: 12.5px;
+    font-weight: 500;
+    cursor: pointer;
+    transition: all 120ms ease;
+    white-space: nowrap;
+  }
+  .btn:hover {
+    background: var(--color-hover);
+  }
+  .btn-sm {
+    padding: 4px 9px;
+    font-size: 11.5px;
+  }
+  .btn-primary {
+    background: var(--color-accent);
+    border-color: var(--color-accent);
+    color: #fff;
+  }
+  .btn-primary:hover {
+    background: var(--color-accent-hover);
+    border-color: var(--color-accent-hover);
+  }
+  .btn-danger {
+    border-color: transparent;
+    background: transparent;
+    color: var(--color-danger);
+  }
+  .btn-danger:hover {
+    background: color-mix(in srgb, var(--color-danger) 7%, transparent);
+  }
+
+  .panel {
+    background: var(--color-panel);
+    border: 1px solid var(--color-line-soft);
+    border-radius: 10px;
+    padding: 20px 22px;
+  }
+
+  .tag {
+    display: inline-flex;
+    align-items: center;
+    gap: 3px;
+    font-size: 10.5px;
+    font-weight: 500;
+    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+    padding: 2px 8px;
+    border-radius: 999px;
+    border: 1px solid var(--color-line-soft);
+    color: var(--color-ink-3);
+    background: var(--color-panel);
+  }
+
+  .input,
+  .select,
+  .textarea {
+    width: 100%;
+    padding: 7px 11px;
+    border-radius: 8px;
+    border: 1px solid var(--color-line);
+    background: var(--color-panel);
+    font-size: 13px;
+    color: var(--color-ink);
+    font-family: inherit;
+    outline: none;
+    transition: border-color 120ms ease;
+  }
+  .input:focus,
+  .select:focus,
+  .textarea:focus {
+    border-color: var(--color-accent);
+  }
+  .textarea {
+    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+    font-size: 12.5px;
+    line-height: 1.75;
+    resize: vertical;
+  }
+  .form-label {
+    display: block;
+    font-size: 11.5px;
+    color: var(--color-ink-3);
+    margin-bottom: 4px;
+  }
+  .form-row {
+    margin-bottom: 12px;
+  }
+
+  table.list {
+    width: 100%;
+    border-collapse: collapse;
+    font-size: 13px;
+  }
+  table.list th {
+    text-align: left;
+    font-size: 11.5px;
+    font-weight: 500;
+    color: var(--color-ink-3);
+    padding: 4px 0;
+  }
+  table.list td {
+    padding: 8px 0;
+    border-top: 1px solid var(--color-line-soft);
+  }
+  table.list tr:first-child td {
+    border-top: none;
+  }
+
+  .quiet {
+    color: var(--color-ink-3);
+    font-size: 12.5px;
+  }
+  .section-title {
+    font-size: 13px;
+    font-weight: 600;
+  }
+  .section-note {
+    font-size: 11.5px;
+    color: var(--color-ink-3);
+  }
+  .file-meta {
+    font-size: 11px;
+    color: var(--color-ink-3);
+    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+  }
+  .link-danger {
+    color: var(--color-danger);
+    font-size: 12.5px;
+    background: none;
+    border: none;
+    cursor: pointer;
+    padding: 0;
+  }
+  .link-danger:hover {
+    text-decoration: underline;
+  }
+
+  /* 开关。真 checkbox 藏在下面 —— 保留键盘可达与 :checked 语义,不做 div 假开关。 */
+  .switch {
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+    cursor: pointer;
+    user-select: none;
+  }
+  .switch > input {
+    position: absolute;
+    opacity: 0;
+    width: 0;
+    height: 0;
+  }
+  .switch > span {
+    position: relative;
+    flex-shrink: 0;
+    width: 30px;
+    height: 17px;
+    border-radius: 999px;
+    background: var(--color-line);
+    transition: background 0.16s;
+  }
+  .switch > span::after {
+    content: "";
+    position: absolute;
+    top: 2px;
+    left: 2px;
+    width: 13px;
+    height: 13px;
+    border-radius: 50%;
+    background: #fff;
+    transition: transform 0.16s;
+    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
+  }
+  .switch > input:checked + span {
+    background: var(--color-accent);
+  }
+  .switch > input:checked + span::after {
+    transform: translateX(13px);
+  }
+  .switch > input:focus-visible + span {
+    outline: 2px solid var(--color-accent);
+    outline-offset: 2px;
+  }
+}
+
+/* diff 渲染 */
+pre.diff {
+  white-space: pre-wrap;
+  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+  font-size: 12.5px;
+  line-height: 1.75;
+}
+pre.diff .add {
+  display: block;
+  color: var(--color-diff-add-text);
+  background: var(--color-diff-add-bg);
+}
+pre.diff .del {
+  display: block;
+  color: var(--color-diff-del-text);
+  background: var(--color-diff-del-bg);
+}

hub/filelib-web/src/app.d.ts

@@ -0,0 +1,12 @@
+// See https://svelte.dev/docs/kit/types#app
+declare global {
+	namespace App {
+		// interface Error {}
+		// interface Locals {}
+		// interface PageData {}
+		// interface PageState {}
+		// interface Platform {}
+	}
+}
+
+export {};

hub/filelib-web/src/app.html

@@ -0,0 +1,16 @@
+<!doctype html>
+<html lang="zh-CN">
+	<head>
+		<meta charset="utf-8" />
+		<meta name="viewport" content="width=device-width, initial-scale=1" />
+		<link rel="preconnect" href="https://fonts.googleapis.com" />
+		<link
+			href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap"
+			rel="stylesheet"
+		/>
+		%sveltekit.head%
+	</head>
+	<body data-sveltekit-preload-data="hover" style="height: 100%">
+		<div style="display: contents; height: 100%">%sveltekit.body%</div>
+	</body>
+</html>

hub/filelib-web/src/lib/Avatar.svelte

@@ -0,0 +1,31 @@
+<script lang="ts">
+  /** 头像:有 avatarUrl 用图,否则显示首字母色块。 */
+  let {
+    displayName,
+    userId,
+    avatarUrl = null,
+    size = 28,
+  }: {
+    displayName?: string | null;
+    userId?: string | null;
+    avatarUrl?: string | null;
+    size?: number;
+  } = $props();
+
+  const initial = $derived((displayName || userId || "?").slice(0, 1).toUpperCase());
+</script>
+
+{#if avatarUrl}
+  <img
+    src={avatarUrl}
+    alt=""
+    class="shrink-0 rounded-full object-cover"
+    style="width:{size}px;height:{size}px"
+  />
+{:else}
+  <span
+    class="inline-flex shrink-0 items-center justify-center rounded-full bg-accent font-semibold text-white"
+    style="width:{size}px;height:{size}px;font-size:{Math.round(size * 0.42)}px"
+    aria-hidden="true">{initial}</span
+  >
+{/if}

hub/filelib-web/src/lib/BinView.svelte

@@ -0,0 +1,105 @@
+<script lang="ts">
+  /**
+   * 回收站(ADR-0031):祖先全活跃的已删节点顶;恢复只清本节点 deletedAt;
+   * 彻底删除(整支硬删)仅网站管理员,二次确认。
+   */
+  import { onMount } from "svelte";
+  import { api } from "./api.js";
+  import { toastErr, toastOk } from "./stores.js";
+  import type { BinEntry } from "./types.js";
+  import Icon from "./Icon.svelte";
+
+  let entries = $state<BinEntry[] | null>(null);
+  let error = $state<string | null>(null);
+  let busyId = $state<string | null>(null);
+
+  async function load(): Promise<void> {
+    try {
+      const r = await api<{ entries: BinEntry[] }>("/database/api/bin");
+      entries = r.entries;
+      error = null;
+    } catch (e) {
+      error = e instanceof Error ? e.message : String(e);
+    }
+  }
+
+  onMount(load);
+
+  function fmt(iso: string): string {
+    try {
+      return new Date(iso).toLocaleString("zh-CN", { dateStyle: "medium", timeStyle: "short" });
+    } catch {
+      return iso;
+    }
+  }
+
+  async function restore(e: BinEntry): Promise<void> {
+    busyId = e.id;
+    try {
+      const r = await api<{ name: string }>(
+        `/database/api/bin/${encodeURIComponent(e.id)}/restore`,
+        { method: "POST" },
+      );
+      toastOk(`已恢复「${r.name}」`);
+      await load();
+    } catch (err) {
+      toastErr(err instanceof Error ? err.message : String(err));
+    } finally {
+      busyId = null;
+    }
+  }
+
+  async function purge(e: BinEntry): Promise<void> {
+    if (!confirm(`彻底删除「${e.name}」及其全部内容?此操作不可恢复。`)) return;
+    if (!confirm(`再次确认:整支硬删,含子文件夹/项目/文件与授权记录。继续?`)) return;
+    busyId = e.id;
+    try {
+      const r = await api<{ removed: number }>(`/database/api/bin/${encodeURIComponent(e.id)}`, { method: "DELETE" });
+      toastOk(`已彻底删除(${r.removed} 个节点)`);
+      await load();
+    } catch (err) {
+      toastErr(err instanceof Error ? err.message : String(err));
+    } finally {
+      busyId = null;
+    }
+  }
+</script>
+
+<div class="flex-1 overflow-y-auto px-6 py-5">
+  <h1 class="mb-4 text-[15px] font-semibold text-ink">回收站</h1>
+
+  {#if error !== null}
+    <div class="py-8 text-center text-[13px] text-danger">{error}</div>
+  {:else if entries === null}
+    <div class="quiet py-8 text-center">加载中…</div>
+  {:else if entries.length === 0}
+    <div class="quiet py-8 text-center">回收站是空的</div>
+  {:else}
+    <div class="panel !p-2">
+      {#each entries as e (e.id)}
+        <div class="flex items-center gap-3 rounded-lg px-3 py-2">
+          <span class="flex text-ink-3"><Icon name={e.kind === "FOLDER" ? "folder" : "layers"} size={15} /></span>
+          <span class="min-w-0 flex-1">
+            <span class="block truncate text-[13px] text-ink">{e.name}</span>
+            <span class="quiet block">删除于 {fmt(e.deletedAt)}</span>
+          </span>
+          <button
+            class="btn btn-sm disabled:opacity-50"
+            onclick={() => void restore(e)}
+            disabled={busyId === e.id}
+          >
+            <Icon name="restore" size={12} /> 恢复
+          </button>
+          <!-- 彻底删除与条目可见性同权(ADR-0034):能在回收站看到,就能清空 -->
+          <button
+            class="btn btn-sm btn-danger disabled:opacity-50"
+            onclick={() => void purge(e)}
+            disabled={busyId === e.id}
+          >
+            <Icon name="trash" size={12} /> 彻底删除
+          </button>
+        </div>
+      {/each}
+    </div>
+  {/if}
+</div>

hub/filelib-web/src/lib/ContextMenu.svelte

@@ -0,0 +1,55 @@
+<script lang="ts" module>
+  import type { IconName } from "./Icon.svelte";
+
+  export interface MenuItem {
+    readonly label: string;
+    readonly icon?: IconName;
+    readonly danger?: boolean;
+    readonly onclick: () => void;
+  }
+</script>
+
+<script lang="ts">
+  /**
+   * 通用右键菜单:光标处弹出,点任意处/再次右键关闭。
+   * 位置做视口夹取(右侧/底部溢出时向内收)。
+   */
+  import Icon from "./Icon.svelte";
+
+  let { x, y, items, onclose }: { x: number; y: number; items: readonly MenuItem[]; onclose: () => void } = $props();
+
+  const MENU_W = 178;
+  const ITEM_H = 34;
+  const px = $derived(
+    typeof window === "undefined" ? x : Math.max(4, Math.min(x, window.innerWidth - MENU_W - 8)),
+  );
+  const py = $derived(
+    typeof window === "undefined" ? y : Math.max(4, Math.min(y, window.innerHeight - items.length * ITEM_H - 20)),
+  );
+</script>
+
+<div
+  class="fixed inset-0 z-50"
+  role="presentation"
+  onclick={onclose}
+  oncontextmenu={(e) => { e.preventDefault(); onclose(); }}
+>
+  <div
+    class="fixed rounded-xl border border-line-soft bg-panel py-1.5 shadow-[0_8px_28px_rgba(26,26,24,.12)]"
+    style="left:{px}px;top:{py}px;width:{MENU_W}px"
+  >
+    {#each items as item (item.label)}
+      <button
+        class="flex w-full items-center gap-2.5 px-3.5 py-[7px] text-left text-[12.5px] transition {item.danger
+          ? 'text-danger hover:bg-hover'
+          : 'text-ink hover:bg-hover'}"
+        onclick={() => { onclose(); item.onclick(); }}
+      >
+        {#if item.icon}
+          <span class={item.danger ? "" : "text-ink-3"}><Icon name={item.icon} size={14} /></span>
+        {/if}
+        {item.label}
+      </button>
+    {/each}
+  </div>
+</div>

hub/filelib-web/src/lib/FileEditor.svelte

@@ -0,0 +1,166 @@
+<script lang="ts">
+  import { api, ApiError } from "./api.js";
+  import { toastOk, toastErr, toast } from "./stores.js";
+  import type { FileContent, VersionInfo, Role } from "./types.js";
+  import Modal from "./Modal.svelte";
+  import Icon from "./Icon.svelte";
+
+  let { projectId, path, role, onchanged, onclose }: { projectId: string; path: string; role: Role; onchanged: () => void; onclose?: () => void } = $props();
+
+  let file = $state<FileContent | null>(null);
+  let draft = $state("");
+  let loadError = $state<string | null>(null);
+  let conflict = $state<{ currentVersion: string; diff: string } | null>(null);
+  let showHistory = $state(false);
+  let history = $state<VersionInfo[]>([]);
+
+  const canEdit = $derived(role !== "VIEW");
+
+  async function load(): Promise<void> {
+    try {
+      file = await api<FileContent>(`/database/api/projects/${projectId}/file?path=${encodeURIComponent(path)}`);
+      draft = file.encoding === "utf8" ? file.content : "";
+      loadError = null;
+      conflict = null;
+    } catch (e) {
+      loadError = e instanceof Error ? e.message : String(e);
+    }
+  }
+
+  $effect(() => {
+    void projectId;
+    void path;
+    void load();
+  });
+
+  async function save(): Promise<void> {
+    if (file === null) return;
+    try {
+      const r = await api<{ version: string }>(`/database/api/projects/${projectId}/file/commits`, {
+        method: "POST",
+        body: { path: file.path, baseVersion: file.version, content: draft },
+      });
+      toastOk("已提交 " + r.version);
+      await load();
+      onchanged();
+    } catch (e) {
+      if (e instanceof ApiError && e.status === 409 && typeof e.details?.["currentVersion"] === "string") {
+        await showConflict(e.details["currentVersion"]);
+      } else {
+        toastErr(e instanceof Error ? e.message : String(e));
+      }
+    }
+  }
+
+  async function showConflict(currentVersion: string): Promise<void> {
+    if (file === null) return;
+    try {
+      const r = await api<{ diff: string }>(
+        `/database/api/projects/${projectId}/file/diff?path=${encodeURIComponent(file.path)}&from=${encodeURIComponent(file.version)}&to=${encodeURIComponent(currentVersion)}`,
+      );
+      conflict = { currentVersion, diff: r.diff };
+      file = { ...file, version: currentVersion };
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+
+  async function acceptLatest(): Promise<void> {
+    conflict = null;
+    await load();
+    toast("已载入最新内容,请在此基础上合并", "info");
+  }
+
+  async function remove(): Promise<void> {
+    if (file === null || !confirm("删除文件 " + file.path + "?")) return;
+    try {
+      await api(`/database/api/projects/${projectId}/file?path=${encodeURIComponent(file.path)}`, {
+        method: "DELETE",
+        body: { baseVersion: file.version },
+      });
+      toastOk("已删除");
+      file = null;
+      onchanged();
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+
+  async function openHistory(): Promise<void> {
+    try {
+      const r = await api<{ history: VersionInfo[] }>(`/database/api/projects/${projectId}/file/history?path=${encodeURIComponent(path)}`);
+      history = r.history;
+      showHistory = true;
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+
+  function renderDiff(diff: string): string {
+    return diff
+      .replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;")
+      .replace(/^\+(.*)$/gm, '<span class="add">+$1</span>')
+      .replace(/^-(.*)$/gm, '<span class="del">-$1</span>');
+  }
+</script>
+
+{#if loadError}
+  <div class="panel text-xs text-danger">{loadError}</div>
+{:else if file}
+  <div class="panel">
+    <div class="mb-2.5 flex items-center justify-between">
+      <span class="file-meta">{file.path} @ {file.version}</span>
+      <div class="flex items-center gap-1.5">
+        <a class="btn" href="/database/api/projects/{projectId}/file/raw?path={encodeURIComponent(file.path)}" download>下载</a>
+        <button class="btn" onclick={openHistory}><Icon name="clock" size={13} /> 历史</button>
+        {#if canEdit}
+          <button class="btn btn-danger" onclick={remove}><Icon name="trash" size={13} /> 删除文件</button>
+        {/if}
+        {#if onclose}
+          <button class="btn !px-2.5" onclick={onclose} title="关闭预览" aria-label="关闭预览">✕</button>
+        {/if}
+      </div>
+    </div>
+
+    {#if file.encoding === "base64"}
+      <div class="quiet">二进制文件({file.size} B),不支持在线编辑</div>
+    {:else}
+      <textarea rows="14" class="textarea !leading-7" bind:value={draft} readonly={!canEdit}></textarea>
+    {/if}
+
+    {#if canEdit && file.encoding !== "base64"}
+      <div class="mt-3 flex justify-end">
+        <button class="btn btn-primary" onclick={save}>提交修改</button>
+      </div>
+    {/if}
+
+    {#if conflict}
+      <div class="mt-3.5 rounded-xl border border-[#E8E2C8] bg-[#FCFBF4] p-4">
+        <div class="mb-2 text-[13px] font-semibold text-[#6E6329]">冲突:他人已提交 {conflict.currentVersion},差异如下(你的基版 → 最新版)</div>
+        <pre class="diff rounded-lg border border-line-soft bg-panel p-3">{@html renderDiff(conflict.diff)}</pre>
+        <div class="mt-2 text-[11.5px] text-[#8A8059]">请人工合并后,以最新内容为全文重新提交(基版将更新为 {conflict.currentVersion})</div>
+        <div class="mt-2 flex justify-end">
+          <button class="btn" onclick={acceptLatest}>载入最新内容</button>
+        </div>
+      </div>
+    {/if}
+  </div>
+{:else}
+  <div class="panel quiet">加载中…</div>
+{/if}
+
+{#if showHistory}
+  <Modal title="版本历史" onclose={() => (showHistory = false)}>
+    <div class="max-h-80 overflow-y-auto">
+      {#each history as v (v.version)}
+        <div class="border-t border-line-soft py-2 text-xs first:border-t-0">
+          <span class="font-mono text-accent">{v.version}</span> {v.message}
+          <div class="text-ink-3">{new Date(v.committedAt).toLocaleString("zh-CN")}{v.author ? " · " + v.author : ""}</div>
+        </div>
+      {/each}
+    </div>
+    <div class="mt-3 flex justify-end">
+      <button class="btn" onclick={() => (showHistory = false)}>关闭</button>
+    </div>
+  </Modal>
+{/if}

hub/filelib-web/src/lib/FilesPanel.svelte

@@ -0,0 +1,139 @@
+<script lang="ts">
+  import { api } from "./api.js";
+  import { toastOk, toastErr } from "./stores.js";
+  import { selectedFilePath, filesVersion } from "./browser.js";
+  import type { FileEntry, NodeDetail } from "./types.js";
+  import Modal from "./Modal.svelte";
+  import Icon from "./Icon.svelte";
+
+  let { node }: { node: NodeDetail } = $props();
+
+  let files = $state<FileEntry[] | null>(null);
+  let loadError = $state<string | null>(null);
+  let showNewFile = $state(false);
+  let newPath = $state("");
+  let newContent = $state("");
+  // bind:this 的目标要用 $state,否则 svelte 5 warn 不会正确更新。
+  let uploadInput = $state<HTMLInputElement | null>(null);
+
+  const canEdit = $derived(node.role !== "VIEW");
+
+  async function loadFiles(): Promise<void> {
+    try {
+      const r = await api<{ files: FileEntry[] }>(`/database/api/projects/${node.id}/files`);
+      files = r.files;
+      loadError = null;
+    } catch (e) {
+      loadError = e instanceof Error ? e.message : String(e);
+    }
+  }
+
+  $effect(() => {
+    void node.id;
+    void $filesVersion;
+    void loadFiles();
+  });
+
+  async function submitNewFile(): Promise<void> {
+    const path = newPath.trim();
+    if (path === "") return;
+    try {
+      await api(`/database/api/projects/${node.id}/file`, {
+        method: "PUT",
+        body: { path, content: newContent },
+      });
+      toastOk("已创建");
+      showNewFile = false;
+      newPath = ""; newContent = "";
+      await loadFiles();
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+
+  function u8ToBase64(bytes: Uint8Array): string {
+    let bin = "";
+    const CHUNK = 0x8000;
+    for (let i = 0; i < bytes.length; i += CHUNK) {
+      bin += String.fromCharCode.apply(null, Array.from(bytes.subarray(i, i + CHUNK)) as unknown as number[]);
+    }
+    return btoa(bin);
+  }
+
+  async function doUpload(e: Event): Promise<void> {
+    const input = e.target as HTMLInputElement;
+    const file = input.files?.[0];
+    input.value = "";
+    if (!file) return;
+    if (file.size > 10 * 1024 * 1024) {
+      toastErr("文件超过 10MB 上限");
+      return;
+    }
+    const targetPath = prompt("保存到路径(可含目录):", "材料/" + file.name);
+    if (!targetPath) return;
+    const bytes = new Uint8Array(await file.arrayBuffer());
+    const isBinary = bytes.includes(0);
+    const body = isBinary
+      ? { path: targetPath, content: u8ToBase64(bytes), encoding: "base64" }
+      : { path: targetPath, content: new TextDecoder("utf-8").decode(bytes), encoding: "utf8" };
+    try {
+      await api(`/database/api/projects/${node.id}/file`, { method: "PUT", body });
+      toastOk("已上传 " + file.name);
+      await loadFiles();
+    } catch (err) {
+      toastErr(err instanceof Error ? err.message : String(err));
+    }
+  }
+</script>
+
+<div class="panel">
+  <div class="mb-1.5 flex items-center justify-between">
+    <div class="section-title">项目文件({files?.length ?? 0})</div>
+    {#if canEdit}
+      <div class="flex gap-1.5">
+        <button class="btn" onclick={() => (showNewFile = true)}><Icon name="plus" size={13} /> 新建文件</button>
+        <button class="btn btn-primary" onclick={() => uploadInput?.click()}>上传文件</button>
+        <input bind:this={uploadInput} type="file" class="hidden" onchange={doUpload} />
+      </div>
+    {/if}
+  </div>
+
+  {#if files === null && loadError === null}
+    <div class="quiet py-5 text-center">加载中…</div>
+  {:else if loadError}
+    <div class="py-5 text-center text-xs text-danger">{loadError}</div>
+  {:else if files && files.length === 0}
+    <div class="quiet py-5 text-center">空仓库 · 可新建或上传文件</div>
+  {:else if files}
+    <table class="list">
+      <tbody>
+        {#each files as f (f.path)}
+          <tr
+            class="cursor-pointer {$selectedFilePath === f.path ? 'bg-selected' : 'hover:bg-hover'}"
+            onclick={() => selectedFilePath.set(f.path)}
+          >
+            <td class="font-mono text-[12.5px] text-ink">{f.path}</td>
+            <td class="file-meta text-right">{f.size} B</td>
+          </tr>
+        {/each}
+      </tbody>
+    </table>
+  {/if}
+</div>
+
+{#if showNewFile}
+  <Modal title="新建文件" onclose={() => (showNewFile = false)}>
+    <div class="form-row">
+      <label class="form-label" for="nf-path">路径</label>
+      <input id="nf-path" class="input font-mono" bind:value={newPath} placeholder="docs/intro.md" />
+    </div>
+    <div class="form-row">
+      <label class="form-label" for="nf-content">内容</label>
+      <textarea id="nf-content" rows="8" class="textarea" bind:value={newContent} placeholder="内容…"></textarea>
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (showNewFile = false)}>取消</button>
+      <button class="btn btn-primary" onclick={submitNewFile}>创建</button>
+    </div>
+  </Modal>
+{/if}

hub/filelib-web/src/lib/GrantsPanel.svelte

@@ -0,0 +1,381 @@
+<script lang="ts">
+  /**
+   * 节点授权面板(表格化改版)。迁自已删除的 routes/libraryBrowser.ts
+   * `renderGrantsTab`(ADR-0029)。
+   *
+   * 布局:顶部工具条(左:授权成员搜索框;右:「+ 添加授权」弹窗入口);
+   * 下方一行一条授权 —— 成员(名称+id,点击跳用户管理/Group 管理)、
+   * 类型(个人/Group)、权限(下拉可改)、加入时间、操作(删除)。
+   *
+   * 语义(契约 8.1 / ADR-0021 / ADR-0028):
+   *  - 创建者授权(isCreatorGrant)不可收回、不可改;
+   *  - MANAGE 仅创建者可授,前端不做矩阵拦截 —— 后端 fail closed,报错原样 toast;
+   *  - GROUP 主体走 in-hub MemberGroup,/groups/search 搜索选(MANAGE 即可);
+   *    USER 主体用 /users/search(仅网站管理员),老师端无此权限时回落手输 id。
+   */
+  import { api } from "./api.js";
+  import { toastOk, toastErr } from "./stores.js";
+  import { ROLE_LABEL } from "./labels.js";
+  import type { Grant, MemberGroupSearchResult, NodeDetail, Role, UserSearchResult } from "./types.js";
+  import Icon from "./Icon.svelte";
+  import Modal from "./Modal.svelte";
+  import Avatar from "./Avatar.svelte";
+
+  let { node }: { node: NodeDetail } = $props();
+
+  const ROLES: readonly Role[] = ["VIEW", "EDIT", "MANAGE"];
+
+  interface PrincipalOption {
+    readonly id: string;
+    readonly label: string;
+    readonly sub: string;
+  }
+
+  let grants = $state<Grant[] | null>(null);
+  let error = $state<string | null>(null);
+  let searchText = $state("");
+
+  // 添加授权弹窗
+  let showAdd = $state(false);
+  let principalType = $state<"USER" | "GROUP">("USER");
+  let principalQuery = $state("");
+  let principalOptions = $state<readonly PrincipalOption[] | null>(null);
+  let selectedPrincipal = $state<{ readonly id: string; readonly label: string } | null>(null);
+  let manualId = $state("");
+  let searchUnavailable = $state(false);
+  let role = $state<Role>("VIEW");
+  let saving = $state(false);
+  let searchSeq = 0;
+  let searchTimer: ReturnType<typeof setTimeout> | undefined;
+
+  const canManage = $derived(node.role === "MANAGE");
+  const errText = (e: unknown): string => (e instanceof Error ? e.message : String(e));
+
+  /** 工具条搜索:按名称 / id / 类型过滤当前授权行(纯前端过滤,数据已全量在手)。 */
+  const shown = $derived.by((): Grant[] | null => {
+    if (grants === null) return null;
+    const q = searchText.trim().toLowerCase();
+    if (q === "") return grants;
+    return grants.filter(
+      (g) =>
+        g.principalId.toLowerCase().includes(q) ||
+        (g.principalName ?? "").toLowerCase().includes(q) ||
+        (g.principalOpenId ?? "").toLowerCase().includes(q) ||
+        (g.principalType === "USER" ? "个人" : "group").includes(q),
+    );
+  });
+
+  $effect(() => {
+    void node.id;
+    void load();
+  });
+
+  async function load(): Promise<void> {
+    grants = null;
+    error = null;
+    try {
+      const r = await api<{ grants: Grant[] }>(`/database/api/nodes/${node.id}/grants`);
+      grants = r.grants;
+    } catch (e) {
+      error = errText(e);
+    }
+  }
+
+  /** 成员单元格跳转:USER → 用户管理(带过滤词);GROUP → Group 管理(选中该组)。 */
+  function principalHref(g: Grant): string {
+    return g.principalType === "USER"
+      ? `/database/dashboard/users?q=${encodeURIComponent(g.principalId)}`
+      : `/database/dashboard/groups?select=${encodeURIComponent(g.principalId)}`;
+  }
+
+  function fmtDate(iso: string): string {
+    try {
+      return new Date(iso).toLocaleString("zh-CN", { dateStyle: "medium", timeStyle: "short" });
+    } catch {
+      return iso;
+    }
+  }
+
+  /* ------------------------------------------------------------ 添加授权弹窗 */
+
+  function openAdd(): void {
+    showAdd = true;
+    principalType = "USER";
+    principalQuery = "";
+    principalOptions = null;
+    selectedPrincipal = null;
+    manualId = "";
+    searchUnavailable = false;
+    role = "VIEW";
+    void searchPrincipals("");
+  }
+
+  function onTypeChange(): void {
+    principalQuery = "";
+    principalOptions = null;
+    selectedPrincipal = null;
+    manualId = "";
+    searchUnavailable = false;
+    void searchPrincipals("");
+  }
+
+  function onQueryInput(): void {
+    selectedPrincipal = null;
+    if (searchTimer !== undefined) clearTimeout(searchTimer);
+    const q = principalQuery.trim();
+    searchTimer = setTimeout(() => void searchPrincipals(q), 250);
+  }
+
+  async function searchPrincipals(q: string): Promise<void> {
+    // seq 防乱序:慢响应不覆盖新查询的结果。
+    const seq = ++searchSeq;
+    try {
+      if (principalType === "USER") {
+        const r = await api<{ users: UserSearchResult[] }>(
+          `/database/api/users/search?q=${encodeURIComponent(q)}`,
+        );
+        if (seq !== searchSeq) return;
+        principalOptions = r.users.map((u) => ({
+          id: u.userId,
+          label: u.displayName === "" ? u.userId : u.displayName,
+          sub: u.feishuOpenId,
+        }));
+      } else {
+        const r = await api<{ groups: MemberGroupSearchResult[] }>(
+          `/database/api/groups/search?q=${encodeURIComponent(q)}`,
+        );
+        if (seq !== searchSeq) return;
+        principalOptions = r.groups.map((g) => ({ id: g.id, label: g.name, sub: g.breadcrumb }));
+      }
+      searchUnavailable = false;
+    } catch {
+      if (seq !== searchSeq) return;
+      // 老师端 MANAGE 持有者没有 users/search 权限(403)——回落为手输 id。
+      principalOptions = null;
+      searchUnavailable = true;
+    }
+  }
+
+  function pick(option: PrincipalOption): void {
+    selectedPrincipal = { id: option.id, label: option.label };
+    principalQuery = option.label;
+    principalOptions = null;
+  }
+
+  async function addGrant(): Promise<void> {
+    const principalId = selectedPrincipal?.id ?? manualId.trim();
+    if (principalId === "") {
+      toastErr("请选择或填写授权主体");
+      return;
+    }
+    saving = true;
+    try {
+      // PUT /grants 是 upsert 语义(putGrants):同主体已有授权则改级别,否则新建。
+      await api(`/database/api/nodes/${node.id}/grants`, {
+        method: "PUT",
+        body: { grants: [{ principalType, principalId, role }] },
+      });
+      toastOk("已授予");
+      showAdd = false;
+      await load();
+    } catch (e) {
+      toastErr(errText(e));
+    } finally {
+      saving = false;
+    }
+  }
+
+  /** 权限下拉改级别:复用 PUT upsert;被 8.1 矩阵拒绝时 toast 并 reload 回显真实态。 */
+  async function changeRole(g: Grant, next: Role): Promise<void> {
+    if (next === g.role) return;
+    try {
+      await api(`/database/api/nodes/${node.id}/grants`, {
+        method: "PUT",
+        body: { grants: [{ principalType: g.principalType, principalId: g.principalId, role: next }] },
+      });
+      toastOk("权限已更新");
+      await load();
+    } catch (e) {
+      toastErr(errText(e));
+      await load();
+    }
+  }
+
+  async function revoke(g: Grant): Promise<void> {
+    if (!confirm(`删除「${g.principalName ?? g.principalId}」的${ROLE_LABEL[g.role]}授权?`)) return;
+    try {
+      await api(`/database/api/nodes/${node.id}/grants/${encodeURIComponent(g.id)}`, {
+        method: "DELETE",
+      });
+      toastOk("已删除");
+      await load();
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+</script>
+
+<div class="panel">
+  <!-- 工具条:左侧授权成员搜索框,右侧添加授权入口 -->
+  <div class="mb-3 flex items-center gap-2">
+    <div class="relative min-w-0 flex-1">
+      <span class="pointer-events-none absolute left-2.5 top-1/2 -translate-y-1/2 text-ink-3">
+        <Icon name="search" size={14} />
+      </span>
+      <input
+        class="input w-full !pl-8"
+        placeholder="搜索授权成员(名称 / id / 类型)"
+        bind:value={searchText}
+      />
+    </div>
+    {#if canManage}
+      <button class="btn btn-primary shrink-0" onclick={openAdd}>
+        <Icon name="plus" size={13} /> 添加授权
+      </button>
+    {/if}
+  </div>
+
+  {#if error !== null}
+    <div class="py-2 text-[12.5px] text-danger">{error}</div>
+  {:else if shown === null}
+    <div class="quiet py-[18px] text-center">加载中…</div>
+  {:else}
+    <!-- 内容不可断行(头像名/id/日期/下拉)可能超宽:溢出时横向滚动,
+         而不是把表格挤变形或顶出 panel 右边界(文件预览打开时主区变窄)。 -->
+    <div class="overflow-x-auto">
+      <table class="list">
+      <thead>
+        <tr>
+          <th class="whitespace-nowrap pr-4">成员</th>
+          <th class="whitespace-nowrap pr-4">userId</th>
+          <th class="whitespace-nowrap pr-4">飞书 ID</th>
+          <th class="whitespace-nowrap pr-4">类型</th>
+          <th class="whitespace-nowrap pr-4">权限</th>
+          <th class="whitespace-nowrap pr-4">加入时间</th>
+          <th></th>
+        </tr>
+      </thead>
+      <tbody>
+        {#if shown.length === 0}
+          <tr>
+            <td colspan="7" class="quiet !py-[18px] text-center">
+              {searchText.trim() === "" ? "暂无授权" : `无匹配「${searchText.trim()}」的授权`}
+            </td>
+          </tr>
+        {:else}
+          {#each shown as g (g.id)}
+            <tr>
+              <td class="whitespace-nowrap pr-4">
+                <a class="inline-flex items-center gap-2 text-ink hover:text-accent" href={principalHref(g)}>
+                  <Avatar displayName={g.principalName} userId={g.principalId} size={26} />
+                  <span class="flex items-center gap-1.5 text-[13px]">
+                    {g.principalName ?? g.principalId}
+                    {#if g.isCreatorGrant}<span class="quiet">(创建者)</span>{/if}
+                  </span>
+                </a>
+              </td>
+              <td class="file-meta max-w-[230px] truncate pr-4 font-mono" title={g.principalType === "USER" ? g.principalId : ""}>
+                {g.principalType === "USER" ? g.principalId : "—"}
+              </td>
+              <td class="file-meta max-w-[230px] truncate pr-4 font-mono" title={g.principalOpenId ?? ""}>
+                {g.principalOpenId ?? "—"}
+              </td>
+              <td class="whitespace-nowrap pr-4"><span class="tag">{g.principalType === "USER" ? "个人" : "Group"}</span></td>
+              <td class="whitespace-nowrap pr-4">
+                <!-- 创建者授权不可动(契约 8.1);非 MANAGE 持有者只读。 -->
+                {#if !g.isCreatorGrant && canManage}
+                  <select
+                    class="select !w-[110px]"
+                    value={g.role}
+                    onchange={(e) => void changeRole(g, e.currentTarget.value as Role)}
+                  >
+                    {#each ROLES as r (r)}
+                      <option value={r}>{ROLE_LABEL[r]}</option>
+                    {/each}
+                  </select>
+                {:else}
+                  <span class="file-meta">{ROLE_LABEL[g.role]}</span>
+                {/if}
+              </td>
+              <td class="file-meta whitespace-nowrap pr-4">{fmtDate(g.createdAt)}</td>
+              <td class="whitespace-nowrap pr-2 text-right">
+                {#if !g.isCreatorGrant && canManage}
+                  <button class="link-danger inline-flex items-center gap-1" onclick={() => void revoke(g)}>
+                    <Icon name="trash" size={12} /> 删除
+                  </button>
+                {/if}
+              </td>
+            </tr>
+          {/each}
+        {/if}
+      </tbody>
+      </table>
+    </div>
+  {/if}
+</div>
+
+{#if showAdd}
+  <Modal title="添加授权" onclose={() => (showAdd = false)}>
+    <div class="form-row">
+      <label class="form-label" for="grant-type">类型</label>
+      <select id="grant-type" class="select" bind:value={principalType} onchange={onTypeChange}>
+        <option value="USER">个人</option>
+        <option value="GROUP">Group</option>
+      </select>
+    </div>
+    <div class="form-row">
+      <label class="form-label" for="grant-principal">{principalType === "USER" ? "用户" : "Group"}</label>
+      <input
+        id="grant-principal"
+        class="input"
+        placeholder={principalType === "USER" ? "搜索显示名 / openId" : "搜索组名"}
+        bind:value={principalQuery}
+        oninput={onQueryInput}
+      />
+    </div>
+    {#if selectedPrincipal !== null}
+      <div class="form-row">
+        <span class="form-label">已选</span>
+        <span class="quiet self-center text-[12.5px]">
+          {selectedPrincipal.label}<span class="font-mono">({selectedPrincipal.id})</span>
+        </span>
+      </div>
+    {/if}
+    {#if principalOptions !== null && principalOptions.length > 0}
+      <div class="mb-3 max-h-[180px] overflow-y-auto rounded-lg border border-line-soft">
+        {#each principalOptions as o (o.id)}
+          <button class="block w-full px-3 py-2 text-left hover:bg-hover" onclick={() => pick(o)}>
+            <span class="block text-[13px] text-ink">{o.label}</span>
+            <span class="block font-mono text-[11px] text-ink-3">{o.sub}</span>
+          </button>
+        {/each}
+      </div>
+    {:else if searchUnavailable}
+      <div class="form-row">
+        <label class="form-label" for="grant-manual-id">主体 id</label>
+        <input
+          id="grant-manual-id"
+          class="input font-mono"
+          placeholder="无搜索权限,请直接填写 id"
+          bind:value={manualId}
+        />
+      </div>
+    {:else if principalOptions !== null}
+      <div class="quiet mb-3 py-2 text-center text-[12px]">无匹配结果</div>
+    {/if}
+    <div class="form-row">
+      <label class="form-label" for="grant-role">权限</label>
+      <select id="grant-role" class="select" bind:value={role}>
+        {#each ROLES as r (r)}
+          <option value={r}>{ROLE_LABEL[r]}</option>
+        {/each}
+      </select>
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (showAdd = false)}>取消</button>
+      <button class="btn btn-primary disabled:opacity-50" onclick={addGrant} disabled={saving}>
+        {saving ? "授予中…" : "添加"}
+      </button>
+    </div>
+  </Modal>
+{/if}

hub/filelib-web/src/lib/GridCard.svelte

@@ -0,0 +1,47 @@
+<script lang="ts">
+  /**
+   * 网盘式大图标卡片:文件夹(琥珀填充)/项目(立方体描边)/文件(文档描边)。
+   * 单击选中、onopen(双击)、oncontextmenu(右键,回传光标坐标)。
+   */
+  let {
+    kind,
+    name,
+    meta = null,
+    selected = false,
+    onselect,
+    onopen,
+    oncontextmenu,
+  }: {
+    kind: "FOLDER" | "PROJECT" | "FILE";
+    name: string;
+    meta?: string | null;
+    selected?: boolean;
+    onselect: () => void;
+    onopen: () => void;
+    oncontextmenu: (x: number, y: number) => void;
+  } = $props();
+</script>
+
+<button
+  class="flex cursor-pointer flex-col items-center gap-1.5 rounded-xl px-2 pb-2 pt-3 select-none {selected
+    ? 'bg-selected'
+    : 'hover:bg-hover'}"
+  onclick={onselect}
+  ondblclick={onopen}
+  oncontextmenu={(e) => { e.preventDefault(); e.stopPropagation(); oncontextmenu(e.clientX, e.clientY); }}
+  title={name}
+>
+  <span class="flex h-20 w-20 items-center justify-center">
+    {#if kind === "FOLDER"}
+      <svg width="72" height="72" viewBox="0 0 24 24" fill="#f5c94a" stroke="#d9a92b" stroke-width="0.6" stroke-linejoin="round"><path d="M3 7a2 2 0 0 1 2-2h4l2 2h8a2 2 0 0 1 2 2v9a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V7Z" /></svg>
+    {:else if kind === "PROJECT"}
+      <svg width="66" height="66" viewBox="0 0 24 24" fill="#e8f0ea" stroke="#4a6741" stroke-width="1.4" stroke-linecap="round" stroke-linejoin="round"><path d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4" /></svg>
+    {:else}
+      <svg width="60" height="60" viewBox="0 0 24 24" fill="#ffffff" stroke="#9c9b96" stroke-width="1.4" stroke-linecap="round" stroke-linejoin="round"><path d="M14 3H7a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h10a2 2 0 0 0 2-2V8l-5-5Z" /><path d="M14 3v5h5" /><path d="M9 13h6M9 17h6" /></svg>
+    {/if}
+  </span>
+  <span class="line-clamp-2 w-full break-all text-center text-[12.5px] leading-snug text-ink">{name}</span>
+  {#if meta !== null}
+    <span class="-mt-1 text-[10.5px] text-ink-3">{meta}</span>
+  {/if}
+</button>

hub/filelib-web/src/lib/GridLibraryView.svelte

@@ -0,0 +1,527 @@
+<script lang="ts">
+  /**
+   * 老师端网盘式文件库浏览器(仅 /app;管理后台沿用树状 LibraryView)。
+   *
+   * 下钻导航:双击文件夹/项目进入,面包屑 + 返回跳级;项目内文件同样网格化,
+   * 双击进 FileEditor 预览。管理动作全走右键菜单,按节点 role 动态显隐:
+   *  打开 / 新建子文件夹(EDIT+,仅 FOLDER)/ 重命名(MANAGE)/ 授权管理(MANAGE,
+   *  宽 Modal 复用 GrantsPanel)/ 详情(复用 OverviewPanel)/ 删除(MANAGE)。
+   * 文件菜单:打开预览 / 下载 / 删除(EDIT+)。
+   */
+  import { onMount } from "svelte";
+  import { api } from "./api.js";
+  import { me, toastErr, toastOk } from "./stores.js";
+  import { selectedFilePath, clearSelectedFile } from "./browser.js";
+  import { ROLE_LABEL } from "./labels.js";
+  import type { FileEntry, NodeChild, NodeDetail, Role } from "./types.js";
+  import Icon from "./Icon.svelte";
+  import Modal from "./Modal.svelte";
+  import ContextMenu, { type MenuItem } from "./ContextMenu.svelte";
+  import GridCard from "./GridCard.svelte";
+  import FileEditor from "./FileEditor.svelte";
+  import GrantsPanel from "./GrantsPanel.svelte";
+  import OverviewPanel from "./OverviewPanel.svelte";
+
+  const RANK: Record<Role, number> = { VIEW: 1, EDIT: 2, MANAGE: 3 };
+  const atLeast = (role: Role, min: Role): boolean => RANK[role] >= RANK[min];
+
+  type View = "nodes" | "files";
+  type StackItem = Pick<NodeChild, "id" | "name" | "kind" | "role">;
+
+  let view = $state<View>("nodes");
+  /** 下钻栈(均为 FOLDER;根层为空栈)。 */
+  let stack = $state<StackItem[]>([]);
+  let children = $state<NodeChild[] | null>(null);
+  let nodesError = $state<string | null>(null);
+
+  /** 文件视图:当前项目详情 + 文件列表。 */
+  let projectNode = $state<NodeDetail | null>(null);
+  let files = $state<FileEntry[] | null>(null);
+  let filesError = $state<string | null>(null);
+
+  let selected = $state<string | null>(null);
+  let menu = $state<{ x: number; y: number; items: readonly MenuItem[] } | null>(null);
+
+  // 弹窗:create(新建文件夹/项目)/ rename / grants / detail / newFile
+  let modal = $state<"create" | "rename" | "grants" | "detail" | "newFile" | null>(null);
+  let createKind = $state<"FOLDER" | "PROJECT">("FOLDER");
+  let createParentId = $state<string | null>(null);
+  let formName = $state("");
+  let formDesc = $state("");
+  let renameTarget = $state<StackItem | null>(null);
+  let detailNode = $state<NodeDetail | null>(null);
+  let newPath = $state("");
+  let newContent = $state("");
+  let saving = $state(false);
+
+  const errText = (e: unknown): string => (e instanceof Error ? e.message : String(e));
+  const currentFolder = $derived(stack.length === 0 ? null : stack[stack.length - 1]!);
+  const canCreateHere = $derived(
+    currentFolder === null ? ($me?.isWebsiteAdmin ?? false) : atLeast(currentFolder.role, "EDIT"),
+  );
+  const projectCanEdit = $derived(projectNode !== null && projectNode.role !== "VIEW");
+
+  /* ------------------------------------------------------------ 数据加载 */
+
+  async function loadChildren(): Promise<void> {
+    children = null;
+    nodesError = null;
+    try {
+      const parent = currentFolder;
+      const url = parent === null
+        ? "/database/api/nodes"
+        : `/database/api/nodes?parentId=${encodeURIComponent(parent.id)}`;
+      const r = await api<{ nodes: NodeChild[] }>(url);
+      children = r.nodes;
+    } catch (e) {
+      nodesError = errText(e);
+    }
+  }
+
+  async function loadFiles(): Promise<void> {
+    if (projectNode === null) return;
+    files = null;
+    filesError = null;
+    try {
+      const r = await api<{ files: FileEntry[] }>(`/database/api/projects/${projectNode.id}/files`);
+      files = r.files;
+    } catch (e) {
+      filesError = errText(e);
+    }
+  }
+
+  async function fetchDetail(id: string): Promise<NodeDetail> {
+    const r = await api<{ node: NodeDetail }>(`/database/api/nodes/${id}`);
+    return r.node;
+  }
+
+  onMount(loadChildren);
+
+  function refresh(): void {
+    selected = null;
+    menu = null;
+    if (view === "files") void loadFiles();
+    else void loadChildren();
+  }
+
+  /* ------------------------------------------------------------ 导航 */
+
+  function openNode(n: StackItem): void {
+    selected = null;
+    if (n.kind === "FOLDER") {
+      stack = [...stack, n];
+      void loadChildren();
+    } else {
+      void (async () => {
+        try {
+          projectNode = await fetchDetail(n.id);
+          view = "files";
+          await loadFiles();
+        } catch (e) {
+          toastErr(errText(e));
+        }
+      })();
+    }
+  }
+
+  function goRoot(): void {
+    if (view === "files") {
+      view = "nodes";
+      projectNode = null;
+      clearSelectedFile();
+      return;
+    }
+    stack = [];
+    void loadChildren();
+  }
+
+  function goUp(): void {
+    if (view === "files") {
+      goRoot();
+      return;
+    }
+    if (stack.length === 0) return;
+    stack = stack.slice(0, -1);
+    void loadChildren();
+  }
+
+  function goToDepth(depth: number): void {
+    if (view === "files") {
+      view = "nodes";
+      projectNode = null;
+      clearSelectedFile();
+    }
+    stack = stack.slice(0, depth);
+    void loadChildren();
+  }
+
+  /* ------------------------------------------------------------ 节点操作 */
+
+  function openCreate(kind: "FOLDER" | "PROJECT", parentId: string | null): void {
+    createKind = kind;
+    createParentId = parentId;
+    formName = "";
+    formDesc = "";
+    modal = "create";
+  }
+
+  async function submitCreate(): Promise<void> {
+    const name = formName.trim();
+    if (name === "") return;
+    saving = true;
+    try {
+      await api("/database/api/nodes", {
+        method: "POST",
+        body: {
+          parentId: createParentId,
+          kind: createKind,
+          name,
+          ...(formDesc.trim() !== "" ? { description: formDesc.trim() } : {}),
+        },
+      });
+      toastOk("已创建");
+      modal = null;
+      refresh();
+    } catch (e) {
+      toastErr(errText(e));
+    } finally {
+      saving = false;
+    }
+  }
+
+  function openRename(n: StackItem): void {
+    renameTarget = n;
+    formName = n.name;
+    modal = "rename";
+  }
+
+  async function submitRename(): Promise<void> {
+    if (renameTarget === null) return;
+    const name = formName.trim();
+    if (name === "" || name === renameTarget.name) return;
+    saving = true;
+    try {
+      await api(`/database/api/nodes/${renameTarget.id}`, { method: "PATCH", body: { name } });
+      toastOk("已重命名");
+      modal = null;
+      refresh();
+    } catch (e) {
+      toastErr(errText(e));
+    } finally {
+      saving = false;
+    }
+  }
+
+  async function removeNode(n: StackItem): Promise<void> {
+    if (!confirm(`删除「${n.name}」?软删除后不可见。`)) return;
+    try {
+      await api(`/database/api/nodes/${n.id}`, { method: "DELETE" });
+      toastOk("已删除");
+      refresh();
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+
+  async function openGrants(n: StackItem): Promise<void> {
+    try {
+      detailNode = await fetchDetail(n.id);
+      modal = "grants";
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+
+  async function openDetail(n: StackItem): Promise<void> {
+    try {
+      detailNode = await fetchDetail(n.id);
+      modal = "detail";
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+
+  /* ------------------------------------------------------------ 文件操作 */
+
+  function previewFile(f: FileEntry): void {
+    selectedFilePath.set(f.path);
+  }
+
+  async function submitNewFile(): Promise<void> {
+    if (projectNode === null) return;
+    const path = newPath.trim();
+    if (path === "") return;
+    saving = true;
+    try {
+      await api(`/database/api/projects/${projectNode.id}/file`, {
+        method: "PUT",
+        body: { path, content: newContent },
+      });
+      toastOk("已创建");
+      modal = null;
+      newPath = ""; newContent = "";
+      await loadFiles();
+    } catch (e) {
+      toastErr(errText(e));
+    } finally {
+      saving = false;
+    }
+  }
+
+  async function removeFile(f: FileEntry): Promise<void> {
+    if (projectNode === null || !confirm(`删除文件 ${f.path}?`)) return;
+    try {
+      const cur = await api<{ version: string }>(
+        `/database/api/projects/${projectNode.id}/file?path=${encodeURIComponent(f.path)}`,
+      );
+      await api(`/database/api/projects/${projectNode.id}/file?path=${encodeURIComponent(f.path)}`, {
+        method: "DELETE",
+        body: { baseVersion: cur.version },
+      });
+      toastOk("已删除");
+      if ($selectedFilePath === f.path) clearSelectedFile();
+      await loadFiles();
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+
+  /* ------------------------------------------------------------ 右键菜单 */
+
+  function nodeMenuItems(n: StackItem): MenuItem[] {
+    const items: MenuItem[] = [{ label: "打开", icon: "chevron", onclick: () => openNode(n) }];
+    if (n.kind === "FOLDER" && atLeast(n.role, "EDIT")) {
+      items.push({ label: "新建子文件夹", icon: "plus", onclick: () => openCreate("FOLDER", n.id) });
+    }
+    if (n.role === "MANAGE") {
+      items.push(
+        { label: "重命名", icon: "pencil", onclick: () => openRename(n) },
+        { label: "授权管理", icon: "shield", onclick: () => void openGrants(n) },
+      );
+    }
+    items.push({ label: "详情", icon: "info", onclick: () => void openDetail(n) });
+    if (n.role === "MANAGE") {
+      items.push({ label: "删除", icon: "trash", danger: true, onclick: () => void removeNode(n) });
+    }
+    return items;
+  }
+
+  function fileMenuItems(f: FileEntry): MenuItem[] {
+    const items: MenuItem[] = [
+      { label: "打开预览", icon: "chevron", onclick: () => previewFile(f) },
+      {
+        label: "下载",
+        icon: "download",
+        onclick: () => {
+          if (projectNode === null) return;
+          const a = document.createElement("a");
+          a.href = `/database/api/projects/${projectNode.id}/file/raw?path=${encodeURIComponent(f.path)}`;
+          a.download = "";
+          a.click();
+        },
+      },
+    ];
+    if (projectCanEdit) {
+      items.push({ label: "删除", icon: "trash", danger: true, onclick: () => void removeFile(f) });
+    }
+    return items;
+  }
+
+  function bgMenuItems(): MenuItem[] {
+    const items: MenuItem[] = [];
+    if (view === "nodes" && canCreateHere) {
+      items.push(
+        { label: "新建文件夹", icon: "plus", onclick: () => openCreate("FOLDER", currentFolder?.id ?? null) },
+        { label: "新建项目", icon: "plus", onclick: () => openCreate("PROJECT", currentFolder?.id ?? null) },
+      );
+    }
+    if (view === "files" && projectCanEdit) {
+      items.push({ label: "新建文件", icon: "plus", onclick: () => (modal = "newFile") });
+    }
+    items.push({ label: "刷新", icon: "refresh", onclick: refresh });
+    return items;
+  }
+</script>
+
+<div class="flex min-h-0 flex-1 flex-col">
+  <!-- 顶栏:返回 + 面包屑 + 动作 + 身份 -->
+  <header class="flex shrink-0 items-center gap-2 border-b border-line-soft bg-panel px-5 py-3">
+    {#if view === "files" || stack.length > 0}
+      <button class="btn btn-sm" onclick={goUp} title="返回上级">
+        <Icon name="arrowLeft" size={13} /> 返回
+      </button>
+    {/if}
+    <nav class="flex min-w-0 flex-1 items-center gap-1 text-[13px]">
+      <button
+        class="shrink-0 {view === 'nodes' && stack.length === 0 ? 'font-semibold text-ink' : 'text-ink-3 hover:text-ink'}"
+        onclick={goRoot}
+      >文件库</button>
+      {#each stack as n, i (n.id)}
+        <span class="text-line">/</span>
+        <button
+          class="truncate {view === 'nodes' && i === stack.length - 1
+            ? 'font-semibold text-ink'
+            : 'text-ink-3 hover:text-ink'}"
+          onclick={() => goToDepth(i + 1)}
+        >{n.name}</button>
+      {/each}
+      {#if view === "files" && projectNode}
+        <span class="text-line">/</span>
+        <span class="truncate font-semibold text-ink">{projectNode.name}</span>
+      {/if}
+    </nav>
+
+    {#if view === "nodes" && canCreateHere}
+      <button class="btn btn-sm" onclick={() => openCreate("FOLDER", currentFolder?.id ?? null)}>
+        <Icon name="plus" size={13} /> 新建文件夹
+      </button>
+      <button class="btn btn-sm" onclick={() => openCreate("PROJECT", currentFolder?.id ?? null)}>
+        <Icon name="plus" size={13} /> 新建项目
+      </button>
+    {/if}
+    {#if view === "files" && projectCanEdit}
+      <button class="btn btn-sm" onclick={() => (modal = "newFile")}>
+        <Icon name="plus" size={13} /> 新建文件
+      </button>
+    {/if}
+    <button class="btn btn-sm" onclick={refresh} title="刷新"><Icon name="refresh" size={13} /></button>
+  </header>
+
+  <!-- 主体:网格 + 文件预览栏 -->
+  <div class="flex min-h-0 flex-1">
+    <main
+      class="flex-1 overflow-y-auto px-6 py-5"
+      role="presentation"
+      oncontextmenu={(e) => { e.preventDefault(); menu = { x: e.clientX, y: e.clientY, items: bgMenuItems() }; }}
+    >
+      {#if view === "nodes"}
+        {#if nodesError !== null}
+          <div class="py-10 text-center text-[13px] text-danger">{nodesError}</div>
+        {:else if children === null}
+          <div class="quiet py-10 text-center">加载中…</div>
+        {:else if children.length === 0}
+          <div class="quiet py-10 text-center">
+            {currentFolder === null ? "空文件库" : "空文件夹"}{canCreateHere ? " · 右键或点上方按钮新建" : ""}
+          </div>
+        {:else}
+          <div class="grid grid-cols-[repeat(auto-fill,minmax(132px,1fr))] gap-x-2 gap-y-4">
+            {#each children as n (n.id)}
+              <GridCard
+                kind={n.kind}
+                name={n.name}
+                meta={ROLE_LABEL[n.role]}
+                selected={selected === n.id}
+                onselect={() => (selected = n.id)}
+                onopen={() => openNode(n)}
+                oncontextmenu={(x, y) => (menu = { x, y, items: nodeMenuItems(n) })}
+              />
+            {/each}
+          </div>
+        {/if}
+      {:else}
+        {#if filesError !== null}
+          <div class="py-10 text-center text-[13px] text-danger">{filesError}</div>
+        {:else if files === null}
+          <div class="quiet py-10 text-center">加载中…</div>
+        {:else if files.length === 0}
+          <div class="quiet py-10 text-center">空仓库{projectCanEdit ? " · 右键或点上方按钮新建文件" : ""}</div>
+        {:else}
+          <div class="grid grid-cols-[repeat(auto-fill,minmax(132px,1fr))] gap-x-2 gap-y-4">
+            {#each files as f (f.path)}
+              <GridCard
+                kind="FILE"
+                name={f.path}
+                meta="{f.size} B"
+                selected={selected === f.path}
+                onselect={() => (selected = f.path)}
+                onopen={() => previewFile(f)}
+                oncontextmenu={(x, y) => (menu = { x, y, items: fileMenuItems(f) })}
+              />
+            {/each}
+          </div>
+        {/if}
+      {/if}
+    </main>
+
+    {#if view === "files" && $selectedFilePath && projectNode}
+      <section class="flex w-[46%] min-w-[420px] shrink-0 flex-col overflow-y-auto border-l border-line-soft bg-bg p-4">
+        <FileEditor
+          projectId={projectNode.id}
+          path={$selectedFilePath}
+          role={projectNode.role}
+          onchanged={() => void loadFiles()}
+          onclose={clearSelectedFile}
+        />
+      </section>
+    {/if}
+  </div>
+</div>
+
+{#if menu}
+  <ContextMenu x={menu.x} y={menu.y} items={menu.items} onclose={() => (menu = null)} />
+{/if}
+
+{#if modal === "create"}
+  <Modal title={createKind === "FOLDER" ? "新建文件夹" : "新建项目"} onclose={() => (modal = null)}>
+    <div class="form-row">
+      <label class="form-label" for="gc-name">名称</label>
+      <input id="gc-name" class="input" bind:value={formName} placeholder={createKind === "FOLDER" ? "例如:物理" : "例如:微积分基础"} />
+    </div>
+    <div class="form-row">
+      <label class="form-label" for="gc-desc">简介(可选)</label>
+      <textarea id="gc-desc" rows="3" class="textarea" bind:value={formDesc} placeholder="简要说明用途…"></textarea>
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (modal = null)}>取消</button>
+      <button class="btn btn-primary disabled:opacity-50" onclick={submitCreate} disabled={saving}>
+        {saving ? "创建中…" : "创建"}
+      </button>
+    </div>
+  </Modal>
+{/if}
+
+{#if modal === "rename" && renameTarget}
+  <Modal title="重命名" onclose={() => (modal = null)}>
+    <div class="form-row">
+      <label class="form-label" for="gr-name">新名称</label>
+      <input id="gr-name" class="input" bind:value={formName} />
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (modal = null)}>取消</button>
+      <button class="btn btn-primary disabled:opacity-50" onclick={submitRename} disabled={saving}>
+        {saving ? "保存中…" : "保存"}
+      </button>
+    </div>
+  </Modal>
+{/if}
+
+{#if modal === "grants" && detailNode}
+  <Modal maxW={880} title="授权管理 · {detailNode.name}" onclose={() => (modal = null)}>
+    <GrantsPanel node={detailNode} />
+  </Modal>
+{/if}
+
+{#if modal === "detail" && detailNode}
+  <Modal maxW={680} title="详情 · {detailNode.name}" onclose={() => (modal = null)}>
+    <OverviewPanel node={detailNode} ondeleted={() => { modal = null; refresh(); }} />
+  </Modal>
+{/if}
+
+{#if modal === "newFile"}
+  <Modal title="新建文件" onclose={() => (modal = null)}>
+    <div class="form-row">
+      <label class="form-label" for="gf-path">路径</label>
+      <input id="gf-path" class="input font-mono" bind:value={newPath} placeholder="讲义/第一章.md" />
+    </div>
+    <div class="form-row">
+      <label class="form-label" for="gf-content">内容</label>
+      <textarea id="gf-content" rows="8" class="textarea" bind:value={newContent} placeholder="内容…"></textarea>
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (modal = null)}>取消</button>
+      <button class="btn btn-primary disabled:opacity-50" onclick={submitNewFile} disabled={saving}>
+        {saving ? "创建中…" : "创建"}
+      </button>
+    </div>
+  </Modal>
+{/if}

hub/filelib-web/src/lib/GroupAdmin.svelte

@@ -0,0 +1,769 @@
+<script lang="ts">
+  /**
+   * Group 管理面板。从已删除的 routes/adminPanels.ts `renderGroupsPanel`(747 行)
+   * 迁来(ADR-0029),功能与视觉逐条对齐:折叠树 / 组名过滤(命中项保留祖先链)/
+   * 归档组展示与恢复 / 右键菜单 / 面包屑 / 统计条 / 成员表(头像·openId·加入时间)。
+   */
+  import { onMount } from "svelte";
+  import { page } from "$app/state";
+  import { api } from "./api.js";
+  import { toastErr, toastOk } from "./stores.js";
+  import type { MemberGroupNode, MemberGroupMember, UserSearchResult } from "./types.js";
+  import Modal from "./Modal.svelte";
+  import Icon from "./Icon.svelte";
+  import Avatar from "./Avatar.svelte";
+
+  // 后端返回扁平列表(ADR-0028);前端按 parentId/depth 拼成有序树。
+  let groups = $state<MemberGroupNode[]>([]);
+  let loaded = $state(false);
+  let listError = $state<string | null>(null);
+  let selectedId = $state<string | null>(null);
+
+  // 折叠的组 id(默认全展开)。用数组而非 Set:$state 的深层代理只跟踪普通对象/
+  // 数组,Set 的变更不会触发重渲染。
+  let collapsedIds = $state<string[]>([]);
+  const isCollapsed = (id: string): boolean => collapsedIds.includes(id);
+  const toggleCollapsed = (id: string): void => {
+    collapsedIds = isCollapsed(id) ? collapsedIds.filter((x) => x !== id) : [...collapsedIds, id];
+  };
+
+  let filterText = $state("");
+  let showArchived = $state(false);
+
+  let members = $state<MemberGroupMember[]>([]);
+  let membersLoaded = $state(false);
+  let membersError = $state<string | null>(null);
+  let memberFilter = $state("");
+
+  const selected = $derived(groups.find((g) => g.id === selectedId) ?? null);
+  const isArchived = $derived(selected?.archivedAt != null);
+
+  interface Row {
+    readonly g: MemberGroupNode;
+    readonly hasKids: boolean;
+    /** 过滤态下:自身是否命中(祖先链上的非命中项半透明显示)。 */
+    readonly hit: boolean;
+  }
+
+  /** 扁平列表 → 先根遍历顺序;折叠的子树整段跳过。过滤时命中项的祖先链保留。 */
+  const rows = $derived.by((): Row[] => {
+    const byParent = new Map<string | null, MemberGroupNode[]>();
+    const byId = new Map<string, MemberGroupNode>();
+    for (const g of groups) {
+      byId.set(g.id, g);
+      const arr = byParent.get(g.parentId) ?? [];
+      arr.push(g);
+      byParent.set(g.parentId, arr);
+    }
+    for (const arr of byParent.values()) arr.sort((a, b) => a.name.localeCompare(b.name, "zh-CN"));
+
+    // 过滤:命中集 = 名字命中的组 ∪ 其全部祖先(否则命中的深层组无路径可展示)。
+    const q = filterText.trim().toLowerCase();
+    let keep: Set<string> | null = null;
+    if (q !== "") {
+      keep = new Set<string>();
+      for (const g of groups) {
+        if (!g.name.toLowerCase().includes(q)) continue;
+        let cur: MemberGroupNode | undefined = g;
+        while (cur !== undefined) {
+          keep.add(cur.id);
+          cur = cur.parentId === null ? undefined : byId.get(cur.parentId);
+        }
+      }
+    }
+
+    const out: Row[] = [];
+    const walk = (parentId: string | null): void => {
+      for (const g of byParent.get(parentId) ?? []) {
+        if (keep !== null && !keep.has(g.id)) continue;
+        const kids = (byParent.get(g.id) ?? []).filter((k) => keep === null || keep.has(k.id));
+        out.push({ g, hasKids: kids.length > 0, hit: q === "" || g.name.toLowerCase().includes(q) });
+        // 过滤态下强制展开(否则命中项被折叠的祖先藏住)。
+        if (keep !== null || !isCollapsed(g.id)) walk(g.id);
+      }
+    };
+    walk(null);
+    // 兜底:父不在列表的孤儿(级联软删理论上不产生)也列出,避免"看不见"。
+    const seen = new Set(out.map((r) => r.g.id));
+    for (const g of groups) {
+      if (seen.has(g.id)) continue;
+      if (keep !== null && !keep.has(g.id)) continue;
+      out.push({ g, hasKids: false, hit: true });
+    }
+    return out;
+  });
+
+  const treeFoot = $derived.by(() => {
+    const active = groups.filter((g) => g.archivedAt === null);
+    const archivedN = groups.length - active.length;
+    const totalMembers = active.reduce((n, g) => n + g.memberCount, 0);
+    return (
+      `${active.length} 个活跃组 · ${totalMembers} 条成员关系` +
+      (archivedN > 0 ? ` · ${archivedN} 个已删除` : "")
+    );
+  });
+
+  /** 面包屑:祖先链(根在前,自身在末)。 */
+  const chain = $derived.by((): MemberGroupNode[] => {
+    if (selected === null) return [];
+    const byId = new Map(groups.map((g) => [g.id, g]));
+    const out: MemberGroupNode[] = [];
+    for (let cur: MemberGroupNode | undefined = selected; cur !== undefined; ) {
+      out.unshift(cur);
+      cur = cur.parentId === null ? undefined : byId.get(cur.parentId);
+    }
+    return out;
+  });
+
+  const childCount = $derived(groups.filter((g) => g.parentId === selectedId).length);
+
+  const shownMembers = $derived.by(() => {
+    const q = memberFilter.trim().toLowerCase();
+    if (q === "") return members;
+    return members.filter(
+      (m) =>
+        m.displayName.toLowerCase().includes(q) ||
+        m.userId.toLowerCase().includes(q) ||
+        m.feishuOpenId.toLowerCase().includes(q),
+    );
+  });
+
+  function fmtDate(iso: string): string {
+    try {
+      return new Date(iso).toLocaleString("zh-CN", { dateStyle: "medium", timeStyle: "short" });
+    } catch {
+      return iso;
+    }
+  }
+
+  const errText = (e: unknown): string => (e instanceof Error ? e.message : String(e));
+
+  async function loadGroups(): Promise<void> {
+    try {
+      const r = await api<{ groups: MemberGroupNode[] }>(
+        `/database/api/groups${showArchived ? "?includeArchived=1" : ""}`,
+      );
+      groups = r.groups;
+      listError = null;
+      loaded = true;
+      if (selectedId !== null && !groups.some((g) => g.id === selectedId)) {
+        selectedId = null;
+        members = [];
+        membersLoaded = false;
+      }
+    } catch (e) {
+      listError = errText(e);
+      loaded = true;
+    }
+  }
+
+  async function loadMembers(): Promise<void> {
+    if (selectedId === null) return;
+    membersLoaded = false;
+    membersError = null;
+    try {
+      const r = await api<{ members: MemberGroupMember[] }>(
+        `/database/api/groups/${encodeURIComponent(selectedId)}/members`,
+      );
+      members = r.members;
+      membersLoaded = true;
+    } catch (e) {
+      membersError = errText(e);
+      membersLoaded = true;
+    }
+  }
+
+  onMount(async () => {
+    await loadGroups();
+    // 授权面板「成员」单元格跳转:?select=<groupId> 直接选中该组。
+    // 组不在列表(已归档且未开归档展示)时不动作,停留默认态。
+    const target = page.url.searchParams.get("select");
+    if (target !== null && groups.some((g) => g.id === target)) select(target);
+  });
+
+  function select(id: string): void {
+    selectedId = id;
+    memberFilter = "";
+    void loadMembers();
+  }
+
+  async function toggleArchived(): Promise<void> {
+    showArchived = !showArchived;
+    await loadGroups();
+  }
+
+  /* ---------------- 右键菜单 ---------------- */
+
+  interface MenuItem {
+    readonly label?: string;
+    readonly ic?: import("./Icon.svelte").IconName;
+    readonly danger?: boolean;
+    readonly sep?: boolean;
+    readonly fn?: () => void;
+  }
+
+  let menu = $state<{ x: number; y: number; items: MenuItem[] } | null>(null);
+
+  function openMenu(e: MouseEvent, target: MemberGroupNode | null): void {
+    e.preventDefault();
+    // 已归档组:只给「恢复」—— 归档态下不允许建子组/加成员/改名(后端亦 404 兜底)。
+    const items: MenuItem[] =
+      target === null
+        ? [{ label: "新建根 Group", ic: "plus", fn: () => openCreate(null) }]
+        : target.archivedAt !== null
+          ? [
+              { label: "查看成员(只读)", ic: "users", fn: () => select(target.id) },
+              { label: "恢复此 Group", ic: "restore", fn: () => void restoreGroup(target) },
+              { sep: true },
+              { label: "新建根 Group", ic: "layers", fn: () => openCreate(null) },
+            ]
+          : [
+              { label: "新建子 Group", ic: "plus", fn: () => openCreate(target) },
+              { label: "添加成员", ic: "user", fn: () => { select(target.id); openAddMember(); } },
+              { label: "重命名 / 改描述", ic: "pencil", fn: () => openRename(target) },
+              { sep: true },
+              { label: "新建根 Group", ic: "layers", fn: () => openCreate(null) },
+              { label: "删除(级联子树)", ic: "trash", danger: true, fn: () => void deleteGroup(target) },
+            ];
+    // 贴边翻转,避免菜单溢出视口(菜单宽 184、每项约 34)。
+    const w = 184;
+    const h = items.reduce((n, it) => n + (it.sep === true ? 9 : 34), 10);
+    menu = {
+      x: Math.min(e.clientX, window.innerWidth - w - 8),
+      y: Math.min(e.clientY, window.innerHeight - h - 8),
+      items,
+    };
+  }
+
+  /* ---------------- 弹窗 ---------------- */
+
+  let showCreate = $state(false);
+  let createParent = $state<MemberGroupNode | null>(null);
+  let newName = $state("");
+  let newDesc = $state("");
+
+  let showRename = $state(false);
+  let renameTarget = $state<MemberGroupNode | null>(null);
+  let editName = $state("");
+  let editDesc = $state("");
+
+  let showAdd = $state(false);
+  let addQuery = $state("");
+  let addResults = $state<UserSearchResult[]>([]);
+  let addSearching = $state(false);
+
+  function openCreate(parent: MemberGroupNode | null): void {
+    createParent = parent;
+    newName = "";
+    newDesc = "";
+    showCreate = true;
+  }
+
+  async function createGroup(): Promise<void> {
+    const name = newName.trim();
+    if (name === "") {
+      toastErr("名称必填");
+      return;
+    }
+    const parentId = createParent?.id ?? null;
+    try {
+      await api("/database/api/groups", {
+        method: "POST",
+        body: { name, parentId, ...(newDesc.trim() !== "" ? { description: newDesc.trim() } : {}) },
+      });
+      showCreate = false;
+      // 建完自动展开父节点,否则新子组藏在折叠的父下面看不见。
+      if (parentId !== null) collapsedIds = collapsedIds.filter((x) => x !== parentId);
+      toastOk("已创建成员组");
+      await loadGroups();
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+
+  function openRename(g: MemberGroupNode): void {
+    renameTarget = g;
+    editName = g.name;
+    editDesc = g.description ?? "";
+    showRename = true;
+  }
+
+  async function saveRename(): Promise<void> {
+    if (renameTarget === null) return;
+    const name = editName.trim();
+    if (name === "") {
+      toastErr("名称必填");
+      return;
+    }
+    try {
+      // description 总是回传(含空串)—— 空串即清除描述(ADR-0028 决策6)。
+      await api(`/database/api/groups/${encodeURIComponent(renameTarget.id)}`, {
+        method: "PATCH",
+        body: { name, description: editDesc.trim() },
+      });
+      showRename = false;
+      toastOk("已保存");
+      await loadGroups();
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+
+  async function deleteGroup(g: MemberGroupNode): Promise<void> {
+    if (
+      !confirm(
+        `删除「${g.name}」?\n\n软删除:整棵子树一并标记删除,相关授权立即失效,` +
+          "但数据保留 —— 可在左侧打开「显示已删除的组」后恢复。",
+      )
+    )
+      return;
+    try {
+      const r = await api<{ archivedCount: number }>(
+        `/database/api/groups/${encodeURIComponent(g.id)}`,
+        { method: "DELETE" },
+      );
+      if (selectedId === g.id && !showArchived) {
+        selectedId = null;
+        members = [];
+        membersLoaded = false;
+      }
+      toastOk(`已删除 ${r.archivedCount} 个组(软删除,可恢复)`);
+      await loadGroups();
+      if (selectedId === g.id) await loadMembers();
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+
+  async function restoreGroup(g: MemberGroupNode): Promise<void> {
+    // 恢复语义与删除不对称(ADR-0028 决策7):只回该组 + 已归档祖先链,子树仍归档。
+    if (
+      !confirm(
+        `恢复「${g.name}」?\n\n其已删除的上级会一并恢复(否则它在树上无路径);` +
+          "子组保持删除状态,需各自恢复。恢复后该组的授权立即重新生效。",
+      )
+    )
+      return;
+    try {
+      const r = await api<{ restoredCount: number }>(
+        `/database/api/groups/${encodeURIComponent(g.id)}/restore`,
+        { method: "POST" },
+      );
+      toastOk(`已恢复 ${r.restoredCount} 个组`);
+      await loadGroups();
+      if (selectedId === g.id) await loadMembers();
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+
+  function openAddMember(): void {
+    addQuery = "";
+    addResults = [];
+    showAdd = true;
+  }
+
+  /** 成员选择器:搜全局用户,excludeGroupId 过滤掉本组已有成员。 */
+  async function searchUsers(): Promise<void> {
+    if (selectedId === null) return;
+    addSearching = true;
+    try {
+      const r = await api<{ users: UserSearchResult[] }>(
+        `/database/api/users/search?q=${encodeURIComponent(addQuery.trim())}` +
+          `&excludeGroupId=${encodeURIComponent(selectedId)}`,
+      );
+      addResults = r.users;
+    } catch (e) {
+      toastErr(errText(e));
+    } finally {
+      addSearching = false;
+    }
+  }
+
+  async function addMember(userId: string): Promise<void> {
+    if (selectedId === null) return;
+    try {
+      await api(`/database/api/groups/${encodeURIComponent(selectedId)}/members`, {
+        method: "POST",
+        body: { userId },
+      });
+      toastOk("已添加成员");
+      addResults = addResults.filter((u) => u.userId !== userId);
+      await Promise.all([loadMembers(), loadGroups()]);
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+
+  async function removeMember(m: MemberGroupMember): Promise<void> {
+    if (selectedId === null) return;
+    if (!confirm(`将「${m.displayName || m.userId}」移出本组?其经由本组获得的授权立即失效。`)) return;
+    try {
+      await api(
+        `/database/api/groups/${encodeURIComponent(selectedId)}/members/${encodeURIComponent(m.userId)}`,
+        { method: "DELETE" },
+      );
+      toastOk("已移除成员");
+      await Promise.all([loadMembers(), loadGroups()]);
+    } catch (e) {
+      toastErr(errText(e));
+    }
+  }
+</script>
+
+<svelte:window
+  onclick={() => (menu = null)}
+  onkeydown={(e) => {
+    if (e.key === "Escape") menu = null;
+  }}
+/>
+
+<div class="flex h-full min-h-0 items-stretch gap-3.5">
+  <!-- 左:组树 -->
+  <div class="panel flex w-[326px] shrink-0 flex-col !p-3.5" style="min-height:0">
+    <div class="mb-2.5 flex items-center gap-2">
+      <span class="flex text-accent"><Icon name="layers" size={17} /></span>
+      <div class="section-title flex-1">Group 树</div>
+      <button class="btn btn-sm" onclick={() => openCreate(null)}>
+        <Icon name="plus" size={13} /> 根组
+      </button>
+    </div>
+
+    <div class="relative mb-2">
+      <span class="pointer-events-none absolute left-[9px] top-1/2 flex -translate-y-1/2 text-ink-3">
+        <Icon name="search" size={13} />
+      </span>
+      <input class="input !pl-7 !text-[12.5px]" placeholder="过滤组名…" bind:value={filterText} />
+    </div>
+
+    <label class="switch mb-2.5 text-[11.5px] text-ink-3">
+      <input type="checkbox" checked={showArchived} onchange={toggleArchived} />
+      <span></span>
+      显示已删除的组
+    </label>
+
+    <!-- 树空白处右键 = 建根组 -->
+    <div
+      class="-mx-1.5 min-h-0 flex-1 overflow-y-auto"
+      role="tree"
+      tabindex="-1"
+      oncontextmenu={(e) => {
+        if ((e.target as HTMLElement).closest("[data-node]") !== null) return;
+        openMenu(e, null);
+      }}
+    >
+      {#if !loaded}
+        <div class="quiet px-3 py-6 text-center">加载中…</div>
+      {:else if listError !== null}
+        <div class="px-3 py-6 text-center text-xs text-danger">{listError}</div>
+      {:else if groups.length === 0}
+        <div class="quiet flex flex-col items-center gap-2 px-3 py-[22px] text-center">
+          <span class="flex text-line"><Icon name="layers" size={30} /></span>
+          暂无成员组 · 点上方「根组」开始
+        </div>
+      {:else if rows.length === 0}
+        <div class="quiet px-3 py-[22px] text-center">无匹配的组</div>
+      {:else}
+        {#each rows as { g, hasKids, hit } (g.id)}
+          {@const arch = g.archivedAt !== null}
+          <div
+            data-node
+            class="flex cursor-pointer select-none items-center gap-1.5 rounded-lg py-1.5 pr-2 text-[13px]"
+            class:bg-selected={selectedId === g.id}
+            class:opacity-50={!hit}
+            style="padding-left: {8 + g.depth * 15}px"
+            role="treeitem"
+            aria-selected={selectedId === g.id}
+            tabindex="-1"
+            onclick={() => select(g.id)}
+            onkeydown={(e) => {
+              if (e.key === "Enter" || e.key === " ") {
+                e.preventDefault();
+                select(g.id);
+              }
+            }}
+            oncontextmenu={(e) => openMenu(e, g)}
+          >
+            {#if hasKids}
+              <span
+                class="flex w-[15px] shrink-0 justify-center text-ink-3 transition-transform"
+                class:rotate-90={!(isCollapsed(g.id) && filterText.trim() === "")}
+                role="button"
+                tabindex="-1"
+                aria-label="折叠 / 展开"
+                onclick={(e) => {
+                  e.stopPropagation();
+                  toggleCollapsed(g.id);
+                }}
+                onkeydown={(e) => {
+                  if (e.key === "Enter") toggleCollapsed(g.id);
+                }}
+              >
+                <Icon name="chevron" size={13} />
+              </span>
+            {:else}
+              <span class="inline-block w-[15px] shrink-0"></span>
+            {/if}
+
+            <span class="flex" class:text-accent={selectedId === g.id && !arch} class:text-ink-3={arch || selectedId !== g.id}>
+              <Icon name={arch ? "archive" : "group"} size={15} />
+            </span>
+            <span class="flex-1 truncate" class:text-ink-3={arch} class:line-through={arch}>{g.name}</span>
+            <span class="tag shrink-0" class:opacity-70={arch}>
+              <Icon name="user" size={10} />{g.memberCount}
+            </span>
+            {#if arch}
+              <span class="tag shrink-0 !text-[10px] opacity-85">已删除</span>
+            {/if}
+          </div>
+        {/each}
+      {/if}
+    </div>
+
+    <div class="section-note mt-2 border-t border-line-soft pt-2">{loaded ? treeFoot : ""}</div>
+  </div>
+
+  <!-- 右:成员表 -->
+  <div class="panel flex min-h-0 min-w-0 flex-1 flex-col !p-0">
+    {#if selected === null}
+      <div class="quiet m-auto flex flex-col items-center gap-2.5 p-7 text-center">
+        <span class="flex text-line"><Icon name="users" size={40} /></span>
+        从左侧选择一个 Group 查看成员
+      </div>
+    {:else}
+      {#if isArchived}
+        <!-- 归档横幅:软删除是"打标",数据仍在,只是不再贡献权限。 -->
+        <div
+          class="flex shrink-0 items-center gap-2.5 border-b border-line-soft bg-hover px-[18px] py-2.5 text-[12.5px]"
+        >
+          <span class="flex text-ink-3"><Icon name="archive" size={15} /></span>
+          <span class="flex-1">
+            此 Group 已删除于 {fmtDate(selected.archivedAt ?? "")} · 成员只读,不再授予任何权限
+          </span>
+          <button class="btn !text-xs" onclick={() => void restoreGroup(selected)}>
+            <Icon name="restore" size={13} /> 恢复
+          </button>
+        </div>
+      {/if}
+
+      <div class="shrink-0 border-b border-line-soft px-[18px] pb-3 pt-4">
+        <div class="mb-1.5 text-xs">
+          {#each chain as c, i (c.id)}
+            {#if i > 0}<span class="mx-[5px] text-ink-3">/</span>{/if}
+            <span class={i === chain.length - 1 ? "font-medium text-ink" : "text-ink-3"}>{c.name}</span>
+          {/each}
+        </div>
+
+        <div class="flex items-center gap-2.5">
+          <span class="flex" class:text-ink-3={isArchived} class:text-accent={!isArchived}>
+            <Icon name={isArchived ? "archive" : "group"} size={20} />
+          </span>
+          <div class="min-w-0 flex-1">
+            <div class="text-base font-semibold" class:text-ink-3={isArchived}>{selected.name}</div>
+            {#if selected.description !== null && selected.description !== ""}
+              <div class="section-note mt-0.5">{selected.description}</div>
+            {:else}
+              <div class="section-note mt-0.5 opacity-60">无描述</div>
+            {/if}
+          </div>
+          <!-- 归档态不给改名/加成员入口(后端 requireActiveGroup 亦 404 兜底)。 -->
+          {#if !isArchived}
+            <button class="btn !text-xs" onclick={() => openRename(selected)}>
+              <Icon name="pencil" size={13} /> 编辑
+            </button>
+            <button class="btn btn-primary !text-xs" onclick={openAddMember}>
+              <Icon name="plus" size={13} /> 添加成员
+            </button>
+          {/if}
+        </div>
+
+        <div class="mt-3 flex gap-4 text-xs text-ink-3">
+          <span class="inline-flex items-center gap-1"><Icon name="user" size={12} />{members.length} 名成员</span>
+          <span class="inline-flex items-center gap-1"><Icon name="layers" size={12} />层级 {selected.depth}</span>
+          <span class="inline-flex items-center gap-1"><Icon name="group" size={12} />{childCount} 个子组</span>
+        </div>
+      </div>
+
+      <div class="flex shrink-0 items-center gap-2.5 px-[18px] py-2.5">
+        <div class="relative max-w-[280px] flex-1">
+          <span class="pointer-events-none absolute left-[9px] top-1/2 flex -translate-y-1/2 text-ink-3">
+            <Icon name="search" size={13} />
+          </span>
+          <input class="input !pl-7 !text-[12.5px]" placeholder="搜索成员…" bind:value={memberFilter} />
+        </div>
+        <span class="file-meta">
+          {memberFilter.trim() === "" ? "" : `${shownMembers.length} / ${members.length}`}
+        </span>
+      </div>
+
+      <div class="min-h-0 flex-1 overflow-y-auto px-[18px] pb-[18px]">
+        {#if !membersLoaded}
+          <div class="quiet px-3 py-9 text-center">加载中…</div>
+        {:else if membersError !== null}
+          <div class="px-3 py-9 text-center text-xs text-danger">{membersError}</div>
+        {:else if members.length === 0}
+          <div class="quiet flex flex-col items-center gap-2.5 px-3 py-9 text-center">
+            <span class="flex text-line"><Icon name="users" size={34} /></span>
+            {isArchived ? "此组无成员记录" : "此组暂无成员 · 点右上「添加成员」"}
+          </div>
+        {:else if shownMembers.length === 0}
+          <div class="quiet px-3 py-[30px] text-center">无匹配成员</div>
+        {:else}
+          <table class="list">
+            <thead>
+              <tr>
+                <th>成员</th>
+                <th>userId</th>
+                <th>飞书 openId</th>
+                <th>加入时间</th>
+                {#if !isArchived}<th class="!text-right">操作</th>{/if}
+              </tr>
+            </thead>
+            <tbody>
+              {#each shownMembers as m (m.userId)}
+                <tr>
+                  <td>
+                    <span class="inline-flex items-center gap-2.5">
+                      <Avatar displayName={m.displayName} userId={m.userId} avatarUrl={m.avatarUrl} size={28} />
+                      <span class="font-medium">{m.displayName || "(未命名)"}</span>
+                    </span>
+                  </td>
+                  <td class="file-meta">{m.userId}</td>
+                  <td class="file-meta">{m.feishuOpenId || "—"}</td>
+                  <td class="file-meta">{fmtDate(m.joinedAt)}</td>
+                  {#if !isArchived}
+                    <td class="text-right">
+                      <button class="link-danger inline-flex items-center gap-1" onclick={() => void removeMember(m)}>
+                        <Icon name="minus" size={12} /> 移除
+                      </button>
+                    </td>
+                  {/if}
+                </tr>
+              {/each}
+            </tbody>
+          </table>
+        {/if}
+      </div>
+    {/if}
+  </div>
+</div>
+
+<!-- 右键菜单 -->
+{#if menu !== null}
+  <div
+    class="fixed z-[60] min-w-[184px] rounded-[10px] border border-line bg-panel p-[5px] text-[13px] shadow-[0_4px_20px_rgba(26,26,24,.07)]"
+    style="left:{menu.x}px;top:{menu.y}px"
+    role="menu"
+    tabindex="-1"
+  >
+    {#each menu.items as it, i (i)}
+      {#if it.sep === true}
+        <div class="mx-1.5 my-1 h-px bg-line-soft"></div>
+      {:else}
+        <div
+          class="flex cursor-pointer items-center gap-2 rounded-md px-[11px] py-[7px] hover:bg-hover"
+          class:text-danger={it.danger === true}
+          role="menuitem"
+          tabindex="-1"
+          onclick={(e) => {
+            e.stopPropagation();
+            menu = null;
+            it.fn?.();
+          }}
+          onkeydown={(e) => {
+            if (e.key === "Enter") {
+              menu = null;
+              it.fn?.();
+            }
+          }}
+        >
+          {#if it.ic !== undefined}<span class="flex opacity-75"><Icon name={it.ic} size={14} /></span>{/if}
+          {it.label}
+        </div>
+      {/if}
+    {/each}
+  </div>
+{/if}
+
+{#if showCreate}
+  <Modal
+    title={createParent === null ? "新建根 Group" : `在「${createParent.name}」下新建子 Group`}
+    onclose={() => (showCreate = false)}
+  >
+    <div class="form-row">
+      <label class="form-label" for="gc-name">名称</label>
+      <input id="gc-name" class="input" bind:value={newName} placeholder="例如:物理教研组" />
+    </div>
+    <div class="form-row">
+      <label class="form-label" for="gc-desc">描述(可选)</label>
+      <input id="gc-desc" class="input" bind:value={newDesc} placeholder="一句话说明" />
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (showCreate = false)}>取消</button>
+      <button class="btn btn-primary" onclick={createGroup}>创建</button>
+    </div>
+  </Modal>
+{/if}
+
+{#if showRename && renameTarget !== null}
+  <Modal title="重命名 / 改描述" onclose={() => (showRename = false)}>
+    <div class="form-row">
+      <label class="form-label" for="gr-name">名称</label>
+      <input id="gr-name" class="input" bind:value={editName} />
+    </div>
+    <div class="form-row">
+      <label class="form-label" for="gr-desc">描述</label>
+      <input id="gr-desc" class="input" bind:value={editDesc} placeholder="留空则清除描述" />
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (showRename = false)}>取消</button>
+      <button class="btn btn-primary" onclick={saveRename}>保存</button>
+    </div>
+  </Modal>
+{/if}
+
+{#if showAdd && selected !== null}
+  <Modal title={`向「${selected.name}」添加成员`} onclose={() => (showAdd = false)}>
+    <div class="form-row">
+      <label class="form-label" for="ga-q">搜索用户(姓名 / userId / 飞书 openId)</label>
+      <div class="flex gap-2">
+        <input
+          id="ga-q"
+          class="input"
+          bind:value={addQuery}
+          placeholder="留空列出全部候选"
+          onkeydown={(e) => {
+            if (e.key === "Enter") void searchUsers();
+          }}
+        />
+        <button class="btn" onclick={searchUsers}><Icon name="search" size={13} /> 搜索</button>
+      </div>
+      <div class="section-note mt-1.5">已在本组的成员不会出现在结果里。</div>
+    </div>
+
+    <div class="max-h-[280px] overflow-y-auto">
+      {#if addSearching}
+        <div class="quiet px-3 py-6 text-center">搜索中…</div>
+      {:else if addResults.length === 0}
+        <div class="quiet px-3 py-6 text-center">无候选用户 · 先点「搜索」</div>
+      {:else}
+        {#each addResults as u (u.userId)}
+          <div class="flex items-center gap-2.5 border-b border-line-soft py-2 last:border-b-0">
+            <Avatar displayName={u.displayName} userId={u.userId} avatarUrl={u.avatarUrl} size={26} />
+            <div class="min-w-0 flex-1">
+              <div class="truncate text-[13px] font-medium">{u.displayName || "(未命名)"}</div>
+              <div class="file-meta truncate">{u.feishuOpenId || u.userId}</div>
+            </div>
+            <button class="btn btn-sm" onclick={() => void addMember(u.userId)}>
+              <Icon name="plus" size={12} /> 添加
+            </button>
+          </div>
+        {/each}
+      {/if}
+    </div>
+
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (showAdd = false)}>关闭</button>
+    </div>
+  </Modal>
+{/if}

hub/filelib-web/src/lib/Icon.svelte

@@ -0,0 +1,47 @@
+<script lang="ts" module>
+  // 从已删除的 routes/adminPanels.ts 的 GROUP_ICONS 原样搬来(ADR-0029)。
+  export const ICONS = {
+    // Group 节点 = 人的集合。**不用文件夹图标** —— Group 不是目录,与文件库的
+    // FOLDER/PROJECT 是两套体系,图标上也不应混淆。两人剪影。
+    group:
+      "M16 19v-1.5a3.5 3.5 0 0 0-3.5-3.5h-5A3.5 3.5 0 0 0 4 17.5V19M10 11.5a3.25 3.25 0 1 0 0-6.5 3.25 3.25 0 0 0 0 6.5ZM20 19v-1.5a3.5 3.5 0 0 0-2.6-3.38M15.4 5.22a3.25 3.25 0 0 1 0 6.06",
+    users:
+      "M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2M9 11a4 4 0 1 0 0-8 4 4 0 0 0 0 8Zm14 10v-2a4 4 0 0 0-3-3.87M16 3.13a4 4 0 0 1 0 7.75",
+    user: "M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2M12 11a4 4 0 1 0 0-8 4 4 0 0 0 0 8Z",
+    plus: "M12 5v14M5 12h14",
+    pencil: "M17 3a2.8 2.8 0 0 1 4 4L7.5 20.5 2 22l1.5-5.5L17 3Z",
+    trash: "M3 6h18M8 6V4h8v2m-9 0 1 14h8l1-14",
+    search: "m21 21-4.3-4.3M11 18a7 7 0 1 0 0-14 7 7 0 0 0 0 14Z",
+    chevron: "m9 18 6-6-6-6",
+    layers: "m12 2 9 5-9 5-9-5 9-5Zm9 11-9 5-9-5m18 5-9 5-9-5",
+    clock: "M12 22a10 10 0 1 0 0-20 10 10 0 0 0 0 20Zm0-14v6l4 2",
+    minus: "M5 12h14",
+    download: "M12 3v12m0 0 4-4m-4 4-4-4M4 17v2a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2v-2",
+    refresh: "M21 12a9 9 0 1 1-2.64-6.36M21 3v6h-6",
+    arrowLeft: "M19 12H5m0 0 6 6m-6-6 6-6",
+    info: "M12 22a10 10 0 1 0 0-20 10 10 0 0 0 0 20Zm0-10v6m0-11v.5",
+    shield: "M12 3l8 3v6c0 4.5-3.2 7.7-8 9-4.8-1.3-8-4.5-8-9V6l8-3Z",
+    folder: "M3 7a2 2 0 0 1 2-2h4l2 2h8a2 2 0 0 1 2 2v9a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V7Z",
+    // 已归档(软删)标记用;与"删除"区分 —— 数据仍在,只是打了 archivedAt。
+    archive: "M3 8h18v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8Zm1-5h16l1 5H3l1-5Zm5 9h6",
+    restore: "M3 12a9 9 0 1 0 3-6.7M3 4v4.5h4.5",
+  } as const;
+
+  export type IconName = keyof typeof ICONS;
+</script>
+
+<script lang="ts">
+  let { name, size = 16 }: { name: IconName; size?: number } = $props();
+</script>
+
+<svg
+  style="width:{size}px;height:{size}px"
+  class="shrink-0"
+  viewBox="0 0 24 24"
+  fill="none"
+  stroke="currentColor"
+  stroke-width="1.8"
+  stroke-linecap="round"
+  stroke-linejoin="round"
+  aria-hidden="true"
+><path d={ICONS[name]} /></svg>

hub/filelib-web/src/lib/LibraryView.svelte

@@ -0,0 +1,147 @@
+<script lang="ts">
+  /**
+   * 文件库浏览器(树 + 详情 + 文件编辑栏)。
+   *
+   * 两处复用:老师端 /app(showUserFooter=true,侧栏底部带身份与退出)
+   * 与管理后台 /database/dashboard/library(false —— 外层壳已有身份区)。
+   */
+  import { onMount } from "svelte";
+  import { api } from "./api.js";
+  import { me, toastErr, toastOk } from "./stores.js";
+  import { logout } from "./session.js";
+  import { treeVersion, bumpTree, currentNode, selectedFilePath, clearSelectedFile, bumpFiles } from "./browser.js";
+  import type { NodeChild } from "./types.js";
+  import TreeNode from "./TreeNode.svelte";
+  import NodeDetailPanel from "./NodeDetailPanel.svelte";
+  import FileEditor from "./FileEditor.svelte";
+  import Modal from "./Modal.svelte";
+
+  let { showUserFooter = false }: { showUserFooter?: boolean } = $props();
+
+  let roots = $state<NodeChild[] | null>(null);
+  let treeError = $state<string | null>(null);
+  let showCreateRoot = $state(false);
+  let newName = $state("");
+  let newKind = $state<"FOLDER" | "PROJECT">("FOLDER");
+  let newDesc = $state("");
+
+  async function loadRoots(): Promise<void> {
+    try {
+      const r = await api<{ nodes: NodeChild[] }>("/database/api/nodes");
+      roots = r.nodes;
+      treeError = null;
+    } catch (e) {
+      treeError = e instanceof Error ? e.message : String(e);
+    }
+  }
+
+  onMount(loadRoots);
+  $effect(() => {
+    void $treeVersion;
+    void loadRoots();
+  });
+
+  async function createRoot(): Promise<void> {
+    const name = newName.trim();
+    if (name === "") return;
+    try {
+      await api("/database/api/nodes", {
+        method: "POST",
+        body: {
+          parentId: null,
+          kind: newKind,
+          name,
+          ...(newDesc.trim() !== "" ? { description: newDesc.trim() } : {}),
+        },
+      });
+      toastOk("已创建");
+      showCreateRoot = false;
+      newName = ""; newKind = "FOLDER"; newDesc = "";
+      bumpTree();
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+
+  const initial = $derived(($me?.userId ?? "U").slice(0, 1).toUpperCase());
+</script>
+
+<div class="flex min-h-0 flex-1">
+  <!-- 侧栏 -->
+  <aside class="flex w-[300px] shrink-0 flex-col border-r border-line-soft bg-sidebar">
+    <div class="flex items-center justify-between border-b border-line-soft px-4 py-3.5">
+      <span class="text-[15px] font-semibold text-ink">文件库</span>
+      {#if $me?.isWebsiteAdmin}
+        <button class="btn btn-sm" onclick={() => (showCreateRoot = true)}>
+          + 根目录
+        </button>
+      {/if}
+    </div>
+
+    <div class="flex-1 overflow-y-auto px-2 py-2 text-[13px]">
+      {#if treeError}
+        <div class="px-3 py-6 text-center text-xs text-danger">{treeError}</div>
+      {:else if roots === null}
+        <div class="px-3 py-6 text-center text-xs text-ink-3">加载中…</div>
+      {:else if roots.length === 0}
+        <div class="px-3 py-6 text-center text-xs text-ink-3">
+          {$me?.isWebsiteAdmin ? "空文件库 · 点上方「+ 根目录」开始" : "文件库为空,请联系管理员创建根目录"}
+        </div>
+      {:else}
+        {#each roots as node (node.id)}
+          <TreeNode {node} depth={0} />
+        {/each}
+      {/if}
+    </div>
+
+    {#if showUserFooter}
+      <div class="flex items-center gap-2 border-t border-line-soft px-4 py-3 text-[12.5px]">
+        <div class="flex h-6 w-6 shrink-0 items-center justify-center rounded-full bg-accent text-[11px] font-semibold text-white">{initial}</div>
+        <span class="flex-1 truncate text-ink">{$me?.userId ?? ""}</span>
+        <button class="rounded-lg border border-line-soft px-2.5 py-1 text-[11.5px] text-ink-3 transition hover:bg-hover hover:text-ink" onclick={logout} title="退出登录">退出</button>
+      </div>
+    {/if}
+  </aside>
+
+  <!-- 主区 -->
+  <main class="flex-1 overflow-y-auto">
+    <NodeDetailPanel />
+  </main>
+
+  <!-- 右侧:文件预览/编辑栏(选中文件时出现) -->
+  {#if $selectedFilePath && $currentNode?.kind === "PROJECT"}
+    <section class="flex w-[46%] min-w-[420px] shrink-0 flex-col overflow-y-auto border-l border-line-soft bg-bg p-4">
+      <FileEditor
+        projectId={$currentNode.id}
+        path={$selectedFilePath}
+        role={$currentNode.role}
+        onchanged={bumpFiles}
+        onclose={clearSelectedFile}
+      />
+    </section>
+  {/if}
+</div>
+
+{#if showCreateRoot}
+  <Modal title="新建根目录" onclose={() => (showCreateRoot = false)}>
+    <div class="form-row">
+      <label class="form-label" for="root-name">名称</label>
+      <input id="root-name" class="input" bind:value={newName} placeholder="例如:物理教研" />
+    </div>
+    <div class="form-row">
+      <label class="form-label" for="root-kind">类型</label>
+      <select id="root-kind" class="select" bind:value={newKind}>
+        <option value="FOLDER">文件夹</option>
+        <option value="PROJECT">项目(课程资源库)</option>
+      </select>
+    </div>
+    <div class="form-row">
+      <label class="form-label" for="root-desc">简介(可选)</label>
+      <textarea id="root-desc" rows="3" class="textarea" bind:value={newDesc} placeholder="简要说明用途…"></textarea>
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (showCreateRoot = false)}>取消</button>
+      <button class="btn btn-primary" onclick={createRoot}>创建</button>
+    </div>
+  </Modal>
+{/if}

hub/filelib-web/src/lib/LoginView.svelte

@@ -0,0 +1,43 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { loadConfig, type AppConfig } from "./config.js";
+
+  let info = $state<AppConfig | null>(null);
+  let loadFailed = $state(false);
+
+  onMount(async () => {
+    try {
+      info = await loadConfig();
+    } catch {
+      loadFailed = true;
+    }
+  });
+</script>
+
+<div class="flex min-h-full items-center justify-center p-6">
+  <div class="w-full max-w-[380px] rounded-2xl border border-line-soft bg-panel p-9 shadow-[0_4px_20px_rgba(26,26,24,.07)]">
+    <div class="text-center text-[26px] font-semibold tracking-wide text-ink">文件库</div>
+    <p class="mt-2.5 mb-8 text-center text-[13px] text-ink-3">课程资源与教研文件,一处安放,随处可查</p>
+
+    {#if info}
+      <a
+        href="/auth/feishu/{encodeURIComponent(info.orgSlug)}"
+        data-sveltekit-reload
+        class="flex w-full items-center justify-center rounded-lg bg-accent px-4 py-3 text-sm font-medium text-white transition hover:bg-accent-hover"
+      >使用飞书登录</a>
+
+      {#if info.devLoginEnabled}
+        <div class="my-5 flex items-center gap-2.5 text-[11px] text-ink-3">
+          <span class="flex-1 border-t border-line-soft"></span>开发模式
+          <span class="flex-1 border-t border-line-soft"></span>
+        </div>
+        <a href="/app/dev-login-teacher" data-sveltekit-reload class="flex w-full items-center justify-center rounded-lg border border-line bg-panel px-4 py-2 text-[12.5px] font-medium text-ink transition hover:bg-hover">⚡ 一键登录(老师)</a>
+        <p class="mt-2.5 text-center text-[11px] text-ink-3">仅开发环境可见 · 跳过飞书 OAuth</p>
+      {/if}
+    {:else if loadFailed}
+      <p class="text-center text-[12.5px] text-danger">无法加载登录配置,请稍后重试</p>
+    {:else}
+      <p class="text-center text-[12.5px] text-ink-3">加载中…</p>
+    {/if}
+  </div>
+</div>

hub/filelib-web/src/lib/Modal.svelte

@@ -0,0 +1,16 @@
+<script lang="ts">
+  import type { Snippet } from "svelte";
+
+  let { title, onclose, children, maxW = 440 }: { title: string; onclose: () => void; children: Snippet; maxW?: number } = $props();
+</script>
+
+<div
+  class="fixed inset-0 z-40 flex items-center justify-center bg-black/30 p-4"
+  role="presentation"
+  onclick={(e) => { if (e.target === e.currentTarget) onclose(); }}
+>
+  <div class="max-h-[88vh] w-full overflow-y-auto rounded-2xl border border-line-soft bg-panel p-6 shadow-[0_4px_20px_rgba(26,26,24,.07)]" style="max-width:{maxW}px">
+    <div class="mb-4 text-[15px] font-semibold">{title}</div>
+    {@render children()}
+  </div>
+</div>

hub/filelib-web/src/lib/NodeDetailPanel.svelte

@@ -0,0 +1,164 @@
+<script lang="ts">
+  import { api } from "./api.js";
+  import { currentNode, breadcrumb, bumpTree, clearSelectedFile } from "./browser.js";
+  import { toastOk, toastErr } from "./stores.js";
+  import { ROLE_LABEL } from "./labels.js";
+  import OverviewPanel from "./OverviewPanel.svelte";
+  import FilesPanel from "./FilesPanel.svelte";
+  import GrantsPanel from "./GrantsPanel.svelte";
+  import Modal from "./Modal.svelte";
+  import Icon from "./Icon.svelte";
+
+  type Tab = "detail" | "files" | "grants";
+  let tab = $state<Tab>("detail");
+  let showCreateChild = $state(false);
+  let newName = $state("");
+  let newKind = $state<"FOLDER" | "PROJECT">("FOLDER");
+  let newDesc = $state("");
+
+  const node = $derived($currentNode);
+  const crumbs = $derived($breadcrumb);
+  const canManage = $derived(node?.role === "MANAGE");
+  const canEdit = $derived(canManage || node?.role === "EDIT");
+
+  // 与旧 libraryBrowser 的 tab 组装一致:概览恒有;文件仅 PROJECT;授权仅 MANAGE
+  // (FOLDER 也有授权 —— 它虽是透明组织节点,授权仍挂在节点上,ADR-0021)。
+  const tabs = $derived.by((): ReadonlyArray<readonly [Tab, string]> => {
+    const out: Array<readonly [Tab, string]> = [["detail", "概览"]];
+    if (node?.kind === "PROJECT") out.push(["files", "文件"]);
+    if (canManage) out.push(["grants", "授权"]);
+    return out;
+  });
+
+  $effect(() => {
+    void node?.id;
+    tab = "detail";
+    clearSelectedFile();
+  });
+
+  async function createChild(): Promise<void> {
+    const name = newName.trim();
+    if (name === "" || node === null) return;
+    try {
+      await api("/database/api/nodes", {
+        method: "POST",
+        body: {
+          parentId: node.id,
+          kind: newKind,
+          name,
+          ...(newDesc.trim() !== "" ? { description: newDesc.trim() } : {}),
+        },
+      });
+      toastOk("已创建");
+      showCreateChild = false;
+      newName = ""; newKind = "FOLDER"; newDesc = "";
+      bumpTree();
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+
+  async function renameNode(): Promise<void> {
+    if (node === null) return;
+    const name = prompt("新名称", node.name);
+    if (name === null) return;
+    try {
+      await api(`/database/api/nodes/${node.id}`, { method: "PATCH", body: { name } });
+      toastOk("已重命名");
+      bumpTree();
+      currentNode.update((n) => (n ? { ...n, name } : n));
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+
+  async function deleteNode(): Promise<void> {
+    if (node === null || !confirm(`确认删除「${node.name}」?软删除后不可见。`)) return;
+    try {
+      await api(`/database/api/nodes/${node.id}`, { method: "DELETE" });
+      toastOk("已删除");
+      currentNode.set(null);
+      bumpTree();
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+</script>
+
+{#if node === null}
+  <div class="flex h-full items-center justify-center text-[13px] text-ink-3">从左侧选择一个文件夹或项目</div>
+{:else}
+  <div class="mx-auto max-w-[1400px] px-9 py-9">
+    <div class="mb-2 text-[12.5px] text-ink-3">
+      {#each crumbs as c, i (i)}
+        {#if i > 0}<span class="mx-1 text-line">/</span>{/if}
+        <span>{c.name ?? "…"}</span>
+      {/each}
+    </div>
+
+    <div class="mb-5 flex items-center justify-between">
+      <div class="flex items-center gap-2 text-[17px] font-semibold text-ink">
+        {node.name}
+        <span class="tag">{node.kind === "PROJECT" ? "项目" : "文件夹"}</span>
+        <span class="tag !border-line !text-ink-2">{ROLE_LABEL[node.role]}</span>
+      </div>
+      <div class="flex gap-1.5">
+        {#if canEdit && node.kind === "FOLDER"}
+          <button class="btn" onclick={() => (showCreateChild = true)}>
+            <Icon name="plus" size={13} /> 新建子节点
+          </button>
+        {/if}
+        {#if canManage}
+          <button class="btn" onclick={renameNode}><Icon name="pencil" size={13} /> 重命名</button>
+          <button class="btn btn-danger" onclick={deleteNode}><Icon name="trash" size={13} /> 删除</button>
+        {/if}
+      </div>
+    </div>
+
+    <div class="mb-[18px] flex gap-0.5 border-b border-line-soft">
+      {#each tabs as [id, label] (id)}
+        <button
+          class="-mb-px border-b-2 px-3.5 py-2 text-[13px] transition {tab === id
+            ? 'border-accent font-semibold text-ink'
+            : 'border-transparent text-ink-3 hover:text-ink'}"
+          onclick={() => (tab = id)}
+        >{label}</button>
+      {/each}
+    </div>
+
+    {#if tab === "grants"}
+      <GrantsPanel {node} />
+    {:else if tab === "files" && node.kind === "PROJECT"}
+      <FilesPanel {node} />
+    {:else}
+      <OverviewPanel {node} />
+      {#if node.kind === "FOLDER"}
+        <div class="quiet mt-3.5">文件夹是透明组织节点,点左侧树展开以浏览子内容。</div>
+      {/if}
+    {/if}
+  </div>
+{/if}
+
+{#if showCreateChild && node}
+  <Modal title="新建子节点" onclose={() => (showCreateChild = false)}>
+    <div class="form-row">
+      <label class="form-label" for="child-name">名称</label>
+      <input id="child-name" class="input" bind:value={newName} placeholder="例如:物理必修一" />
+    </div>
+    <div class="form-row">
+      <label class="form-label" for="child-kind">类型</label>
+      <select id="child-kind" class="select" bind:value={newKind}>
+        <option value="FOLDER">文件夹</option>
+        <option value="PROJECT">项目(课程资源库)</option>
+      </select>
+    </div>
+    <div class="form-row">
+      <label class="form-label" for="child-desc">简介(可选)</label>
+      <textarea id="child-desc" rows="3" class="textarea" bind:value={newDesc} placeholder="简要说明用途…"></textarea>
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (showCreateChild = false)}>取消</button>
+      <button class="btn btn-primary" onclick={createChild}>创建</button>
+    </div>
+  </Modal>
+{/if}

hub/filelib-web/src/lib/OverviewPanel.svelte

@@ -0,0 +1,157 @@
+<script lang="ts">
+  import { api } from "./api.js";
+  import { toastOk, toastErr } from "./stores.js";
+  import { currentNode } from "./browser.js";
+  import { ROLE_LABEL } from "./labels.js";
+  import type { ExportJob, NodeDetail } from "./types.js";
+  import Modal from "./Modal.svelte";
+
+  let { node, ondeleted }: { node: NodeDetail; ondeleted?: () => void } = $props();
+
+  let showEditDesc = $state(false);
+  let descDraft = $state("");
+  let exportJob = $state<ExportJob | null>(null);
+  let deleting = $state(false);
+
+  const canEdit = $derived(node.role === "MANAGE" || node.role === "EDIT");
+  const canManage = $derived(node.role === "MANAGE");
+  const roleLabel = $derived(ROLE_LABEL[node.role]);
+
+  /** 删除(进回收站,可恢复;ADR-0031)。MANAGE 专属,与右键菜单同语义。 */
+  async function deleteNode(): Promise<void> {
+    if (!confirm(`删除「${node.name}」?移入回收站,可在回收站恢复。`)) return;
+    deleting = true;
+    try {
+      await api(`/database/api/nodes/${node.id}`, { method: "DELETE" });
+      toastOk("已移入回收站");
+      ondeleted?.();
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    } finally {
+      deleting = false;
+    }
+  }
+
+  $effect(() => {
+    void node.id;
+    exportJob = null;
+  });
+
+  function openEditDesc(): void {
+    descDraft = node.description ?? "";
+    showEditDesc = true;
+  }
+
+  async function saveDesc(): Promise<void> {
+    const description = descDraft.trim();
+    try {
+      await api(`/database/api/nodes/${node.id}`, {
+        method: "PATCH",
+        body: { description: description === "" ? null : description },
+      });
+      toastOk("简介已保存");
+      showEditDesc = false;
+      const next = description === "" ? null : description;
+      currentNode.update((n) => (n && n.id === node.id ? { ...n, description: next } : n));
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+
+  async function submitExport(): Promise<void> {
+    try {
+      const r = await api<{ jobId: string; status: string }>(`/database/api/projects/${node.id}/exports`, {
+        method: "POST",
+        body: { target: "manifest" },
+      });
+      toastOk("导出已提交");
+      void pollExport(r.jobId);
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+
+  async function pollExport(jobId: string): Promise<void> {
+    for (;;) {
+      await new Promise((r) => setTimeout(r, 800));
+      try {
+        const job = await api<ExportJob>(`/database/api/exports/${jobId}`);
+        exportJob = job;
+        if (job.status === "DONE" || job.status === "FAILED") break;
+      } catch {
+        break;
+      }
+    }
+  }
+</script>
+
+<div class="panel">
+  <div class="mb-4">
+    <div class="mb-1.5 text-[11.5px] text-ink-3">简介</div>
+    <div class="text-[13.5px] leading-7 text-ink">
+      {#if node.description}
+        {node.description}
+      {:else}
+        <span class="italic text-ink-3">暂无简介</span>
+      {/if}
+      {#if canEdit}
+        <button class="btn ml-2.5 !px-2.5 !py-0.5 align-middle !text-[11.5px]" onclick={openEditDesc}>编辑</button>
+      {/if}
+    </div>
+  </div>
+
+  <div class="my-4 border-t border-line-soft"></div>
+
+  <div class="flex flex-col gap-1.5 text-[13px] text-ink-2">
+    <div>类型 <b class="font-semibold text-ink">{node.kind === "PROJECT" ? "项目" : "文件夹"}</b></div>
+    <div>我的角色 <b class="font-semibold text-ink">{roleLabel}</b></div>
+    <div>创建时间 <b class="font-semibold text-ink">{new Date(node.createdAt).toLocaleString("zh-CN")}</b></div>
+    <div>更新时间 <b class="font-semibold text-ink">{new Date(node.updatedAt).toLocaleString("zh-CN")}</b></div>
+  </div>
+
+  <!-- 导出只对 PROJECT 有意义(FOLDER 是透明组织节点,ADR-0021)。 -->
+  {#if node.kind === "PROJECT"}
+    <div class="my-4 border-t border-line-soft"></div>
+
+    <div class="section-title mb-2">导出</div>
+    <div class="flex items-center gap-2">
+      <select class="select !w-auto"><option value="manifest">manifest(stub)</option></select>
+      <button class="btn" onclick={submitExport}>开始导出</button>
+      {#if exportJob}
+        <span class="file-meta">
+          {#if exportJob.status === "DONE"}
+            完成 · <a class="text-accent underline" href="/database/api/exports/{exportJob.id}/download">下载</a>
+          {:else if exportJob.status === "FAILED"}
+            失败:{exportJob.error ?? ""}
+          {:else}
+            {exportJob.status}…
+          {/if}
+        </span>
+      {/if}
+    </div>
+  {/if}
+
+  {#if canManage}
+    <div class="my-4 border-t border-line-soft"></div>
+
+    <div class="flex items-center justify-between">
+      <span class="quiet">删除后移入回收站,可恢复</span>
+      <button class="btn btn-danger disabled:opacity-50" onclick={deleteNode} disabled={deleting}>
+        {deleting ? "删除中…" : `删除此${node.kind === "PROJECT" ? "项目" : "文件夹"}`}
+      </button>
+    </div>
+  {/if}
+</div>
+
+{#if showEditDesc}
+  <Modal title="编辑简介" onclose={() => (showEditDesc = false)}>
+    <div class="form-row">
+      <label class="form-label" for="desc-draft">简要说明这个项目的内容</label>
+      <textarea id="desc-draft" rows="5" class="input !leading-7" bind:value={descDraft} placeholder="例如:高中物理必修一第三章,表面张力相关内容……"></textarea>
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="btn" onclick={() => (showEditDesc = false)}>取消</button>
+      <button class="btn btn-primary" onclick={saveDesc}>保存</button>
+    </div>
+  </Modal>
+{/if}

hub/filelib-web/src/lib/Toasts.svelte

@@ -0,0 +1,11 @@
+<script lang="ts">
+  import { toasts } from "./stores.js";
+</script>
+
+<div class="fixed bottom-4 right-4 z-50 flex flex-col gap-2">
+  {#each $toasts as t (t.id)}
+    <div class="max-w-[340px] rounded-lg px-4 py-2 text-sm text-white {t.kind === 'err' ? 'bg-[#7E2C26]' : 'bg-[#333230]'}">
+      {t.message}
+    </div>
+  {/each}
+</div>

hub/filelib-web/src/lib/TreeNode.svelte

@@ -0,0 +1,83 @@
+<script lang="ts">
+  import TreeNode from "./TreeNode.svelte";
+  import { api } from "./api.js";
+  import { expanded, currentNode, breadcrumb, toggleExpanded, treeVersion } from "./browser.js";
+  import { toastErr } from "./stores.js";
+  import { ROLE_LABEL } from "./labels.js";
+  import type { BreadcrumbEntry, NodeChild, NodeDetail } from "./types.js";
+
+  let { node, depth }: { node: NodeChild; depth: number } = $props();
+
+  let children = $state<NodeChild[] | null>(null);
+  const isOpen = $derived($expanded.has(node.id));
+  const isSelected = $derived($currentNode?.id === node.id);
+
+  // 树刷新信号(增/删/移/重命名)→ 失效子节点缓存,展开状态下随之重载
+  $effect(() => {
+    void $treeVersion;
+    children = null;
+  });
+
+  $effect(() => {
+    if (isOpen && node.kind === "FOLDER" && children === null) {
+      api<{ nodes: NodeChild[] }>(`/database/api/nodes?parentId=${encodeURIComponent(node.id)}`)
+        .then((r) => (children = r.nodes))
+        .catch((e) => toastErr(e instanceof Error ? e.message : String(e)));
+    }
+  });
+
+  async function select(): Promise<void> {
+    if (node.kind === "FOLDER") toggleExpanded(node.id);
+    try {
+      const [detail, crumb] = await Promise.all([
+        api<{ node: NodeDetail }>(`/database/api/nodes/${node.id}`),
+        api<{ breadcrumb: BreadcrumbEntry[] }>(`/database/api/nodes/${node.id}/breadcrumb`),
+      ]);
+      currentNode.set(detail.node);
+      breadcrumb.set(crumb.breadcrumb);
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+</script>
+
+<div>
+  <div
+    class="tree-item flex cursor-pointer items-center gap-1 rounded-lg px-1.5 py-1.5 select-none {isSelected ? 'bg-selected' : 'hover:bg-hover'}"
+    role="button"
+    tabindex="0"
+    onclick={select}
+    onkeydown={(e) => e.key === "Enter" && select()}
+  >
+    <span class="flex h-4 w-4 shrink-0 items-center justify-center text-ink-3">
+      {#if node.kind === "FOLDER"}
+        <svg width="9" height="9" viewBox="0 0 24 24" fill="currentColor">
+          {#if isOpen}<path d="M6 9l6 6 6-6z" />{:else}<path d="M9 6l6 6-6 6z" />{/if}
+        </svg>
+      {/if}
+    </span>
+    <span class="flex h-4 w-4 shrink-0 items-center justify-center {node.kind === 'PROJECT' ? 'text-ink' : 'text-ink-3'}">
+      {#if node.kind === "PROJECT"}
+        <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><path d="M20 7l-8-4-8 4m16 0l-8 4m8-4v10l-8 4m0-10L4 7m8 4v10M4 7v10l8 4" /></svg>
+      {:else}
+        <svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor"><path d="M3 7a2 2 0 0 1 2-2h4l2 2h8a2 2 0 0 1 2 2v9a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V7Z" /></svg>
+      {/if}
+    </span>
+    <span class="truncate">{node.name}</span>
+    {#if node.role !== "MANAGE"}
+      <span class="ml-auto pr-1 text-[10px] text-ink-3">{ROLE_LABEL[node.role]}</span>
+    {/if}
+  </div>
+
+  {#if node.kind === "FOLDER" && isOpen}
+    <div class="ml-[15px] border-l border-guide pl-1">
+      {#if children === null}
+        <div class="px-3 py-1.5 text-xs text-ink-3">…</div>
+      {:else}
+        {#each children as child (child.id)}
+          <TreeNode node={child} depth={depth + 1} />
+        {/each}
+      {/if}
+    </div>
+  {/if}
+</div>

hub/filelib-web/src/lib/api.ts

@@ -0,0 +1,49 @@
+/** 与 /database/api/* 的约定一致;401 时清空会话(回到登录视图)。 */
+
+import { me } from "./stores.js";
+
+export class ApiError extends Error {
+  constructor(
+    readonly status: number,
+    readonly code: string,
+    message: string,
+    readonly details?: Record<string, unknown>,
+  ) {
+    super(message);
+    this.name = "ApiError";
+  }
+}
+
+export class UnauthenticatedError extends Error {
+  constructor() {
+    super("unauthenticated");
+    this.name = "UnauthenticatedError";
+  }
+}
+
+interface RequestOpts {
+  readonly method?: string;
+  readonly body?: unknown;
+}
+
+export async function api<T = unknown>(path: string, opts: RequestOpts = {}): Promise<T> {
+  const res = await fetch(path, {
+    credentials: "same-origin",
+    method: opts.method ?? "GET",
+    ...(opts.body !== undefined
+      ? { headers: { "Content-Type": "application/json" }, body: JSON.stringify(opts.body) }
+      : {}),
+  });
+  if (res.status === 401) {
+    me.set(null);
+    throw new UnauthenticatedError();
+  }
+  if (res.status === 204) return null as T;
+  const text = await res.text();
+  const data = text === "" ? null : (JSON.parse(text) as unknown);
+  if (!res.ok) {
+    const err = (data as { error?: { code?: string; message?: string } } | null)?.error ?? {};
+    throw new ApiError(res.status, err.code ?? "unknown", err.message ?? res.statusText, err as Record<string, unknown>);
+  }
+  return data as T;
+}

hub/filelib-web/src/lib/browser.ts

@@ -0,0 +1,34 @@
+import { writable } from "svelte/store";
+import type { BreadcrumbEntry, NodeDetail } from "./types.js";
+
+/** 树展开集合 / 当前选中节点 / 面包屑 / 树刷新计数。 */
+export const expanded = writable<Set<string>>(new Set());
+export const currentNode = writable<NodeDetail | null>(null);
+export const breadcrumb = writable<BreadcrumbEntry[]>([]);
+export const treeVersion = writable(0);
+
+/** 右侧预览栏:当前选中文件路径(项目内);切换节点时清空。 */
+export const selectedFilePath = writable<string | null>(null);
+/** 文件列表刷新计数(编辑器保存/删除后 bump,列表随之重载)。 */
+export const filesVersion = writable(0);
+
+export function bumpTree(): void {
+  treeVersion.update((v) => v + 1);
+}
+
+export function bumpFiles(): void {
+  filesVersion.update((v) => v + 1);
+}
+
+export function clearSelectedFile(): void {
+  selectedFilePath.set(null);
+}
+
+export function toggleExpanded(id: string): void {
+  expanded.update((set) => {
+    const next = new Set(set);
+    if (next.has(id)) next.delete(id);
+    else next.add(id);
+    return next;
+  });
+}

hub/filelib-web/src/lib/config.ts

@@ -0,0 +1,23 @@
+/**
+ * 前端 bootstrap:silo org slug(拼飞书 OAuth 链接用)+ dev 一键登录开关。
+ *
+ * 打 `/database/config` 而非 `/database/api/login-info`:后者由 teacherApp.ts 在
+ * silo org 查找成功之后才注册,org 缺失时整条链路不存在;前者在
+ * databaseRoutes.ts 顶部无条件注册。两者形状相同(见 src/database/README.md)。
+ *
+ * 免鉴权 —— org slug 本就出现在 OAuth URL 里,不构成敏感信息。
+ */
+import { api } from "./api.js";
+
+export interface AppConfig {
+  readonly orgSlug: string;
+  readonly devLoginEnabled: boolean;
+}
+
+let cached: AppConfig | null = null;
+
+export async function loadConfig(): Promise<AppConfig> {
+  if (cached !== null) return cached;
+  cached = await api<AppConfig>("/database/config");
+  return cached;
+}

hub/filelib-web/src/lib/labels.ts

@@ -0,0 +1,10 @@
+/** 展示层文案(与 API 枚举值解耦;传参仍用英文枚举)。 */
+
+import type { Role } from "./types.js";
+
+/** 文件库权限级(契约 8.1 MANAGE>EDIT>VIEW)的中文展示名。 */
+export const ROLE_LABEL: Record<Role, string> = {
+  VIEW: "只读",
+  EDIT: "可编辑",
+  MANAGE: "可管理",
+};

hub/filelib-web/src/lib/session.ts

@@ -0,0 +1,34 @@
+/**
+ * 会话装载:GET /database/api/me 一次,结果进 `me` store。
+ * 老师端与管理后台共用 —— 两处的区别只是拿到 me 之后怎么用
+ * (老师端未登录显示登录视图;管理后台未登录跳 /database/admin,
+ * 非 isWebsiteAdmin 显示无权提示)。
+ */
+import { get } from "svelte/store";
+import { api, UnauthenticatedError } from "./api.js";
+import { me, authChecked } from "./stores.js";
+import type { MeResponse } from "./types.js";
+
+/** 幂等:已检查过就不再打请求(路由间切换不重复拉取)。 */
+export async function loadSession(force = false): Promise<void> {
+  if (get(authChecked) && !force) return;
+
+  try {
+    me.set(await api<MeResponse>("/database/api/me"));
+  } catch (e) {
+    if (!(e instanceof UnauthenticatedError)) console.error(e);
+    me.set(null);
+  } finally {
+    authChecked.set(true);
+  }
+}
+
+/** 退出登录:清后端 cookie 再清前端 store。 */
+export async function logout(): Promise<void> {
+  try {
+    await fetch("/auth/logout", { method: "POST", credentials: "same-origin" });
+  } catch {
+    /* 网络失败也照样清前端状态 */
+  }
+  me.set(null);
+}

hub/filelib-web/src/lib/stores.ts

@@ -0,0 +1,26 @@
+import { writable } from "svelte/store";
+import type { MeResponse } from "./types.js";
+
+/** 当前登录身份;null = 未登录(显示登录视图)。 */
+export const me = writable<MeResponse | null>(null);
+export const authChecked = writable(false);
+
+export interface ToastItem {
+  readonly id: number;
+  readonly message: string;
+  readonly kind: "info" | "err";
+}
+
+let nextToastId = 1;
+export const toasts = writable<ToastItem[]>([]);
+
+export function toast(message: string, kind: ToastItem["kind"] = "info"): void {
+  const id = nextToastId++;
+  toasts.update((list) => [...list, { id, message, kind }]);
+  setTimeout(() => {
+    toasts.update((list) => list.filter((t) => t.id !== id));
+  }, 3600);
+}
+
+export const toastOk = (m: string): void => toast(m, "info");
+export const toastErr = (m: string): void => toast(m, "err");

hub/filelib-web/src/lib/types.ts

@@ -0,0 +1,168 @@
+/** 与后端 /database/api/* 响应形状对齐。 */
+
+export type NodeKind = "FOLDER" | "PROJECT";
+export type Role = "VIEW" | "EDIT" | "MANAGE";
+
+export interface NodeChild {
+  readonly id: string;
+  readonly parentId: string | null;
+  readonly kind: NodeKind;
+  readonly name: string;
+  readonly role: Role;
+  readonly createdAt: string;
+  readonly updatedAt: string;
+}
+
+export interface BreadcrumbEntry {
+  readonly depth: number;
+  readonly id: string | null;
+  readonly name: string | null;
+  readonly kind: NodeKind;
+  /** 该节点对调用者的 effective role;无 View 为 null。 */
+  readonly role: Role | null;
+}
+
+export interface NodeDetail {
+  readonly id: string;
+  readonly parentId: string | null;
+  readonly kind: NodeKind;
+  readonly name: string;
+  readonly description: string | null;
+  readonly role: Role;
+  readonly provisionStatus: "PROVISIONING" | "READY" | "FAILED";
+  readonly createdAt: string;
+  readonly updatedAt: string;
+}
+
+export interface MeResponse {
+  readonly userId: string;
+  readonly isWebsiteAdmin: boolean;
+  /** 侧栏身份区显示用;后端取不到 User 行时回落为 userId。 */
+  readonly displayName: string;
+  readonly avatarUrl: string | null;
+}
+
+export interface FileEntry {
+  readonly path: string;
+  readonly size: number;
+}
+
+export type FileContentEncoding = "utf8" | "base64";
+
+export interface FileContent {
+  readonly path: string;
+  readonly version: string;
+  readonly encoding: FileContentEncoding;
+  readonly content: string;
+  readonly size: number;
+}
+
+export interface VersionInfo {
+  readonly version: string;
+  readonly message: string;
+  readonly author?: string;
+  readonly committedAt: string;
+}
+
+export interface ExportJob {
+  readonly id: string;
+  readonly nodeId: string;
+  readonly target: string;
+  readonly status: "QUEUED" | "RUNNING" | "DONE" | "FAILED";
+  readonly error: string | null;
+  readonly createdAt: string;
+}
+
+export interface GroupSearchResult {
+  readonly id: string;
+  readonly name: string;
+  readonly breadcrumb: string;
+}
+
+/** 成员组(ADR-0028);后端返回扁平列表,前端按 parentId/depth 拼树。 */
+export interface MemberGroupNode {
+  readonly id: string;
+  readonly parentId: string | null;
+  readonly name: string;
+  readonly description: string | null;
+  readonly depth: number;
+  readonly memberCount: number;
+  /** 软删标记(ADR-0028 决策4)。null = 活跃;非 null = 已归档,不贡献任何权限。
+   *  仅在 ?includeArchived=1 时可能非 null。ISO 串(后端 JSON 序列化后不再是 Date)。 */
+  readonly archivedAt: string | null;
+}
+
+export interface MemberGroupMember {
+  readonly userId: string;
+  readonly displayName: string;
+  readonly feishuOpenId: string;
+  readonly avatarUrl: string | null;
+  /** 加入本组时间;ISO 串。 */
+  readonly joinedAt: string;
+}
+
+/** 节点授权(GET /database/api/nodes/:id/grants)。 */
+export interface Grant {
+  readonly id: string;
+  readonly principalType: "USER" | "GROUP";
+  readonly principalId: string;
+  /** 主体显示名(用户 displayName / 组 name);主体已删为 null,展示回落 principalId。 */
+  readonly principalName: string | null;
+  /** USER 主体的飞书 openId;GROUP 或主体已删为 null。 */
+  readonly principalOpenId: string | null;
+  readonly role: Role;
+  /** 创建者授权不可收回、不可改(契约 8.1)。 */
+  readonly isCreatorGrant: boolean;
+  readonly createdAt: string;
+}
+
+/** Group 选择器候选(GET /database/api/groups/search)。 */
+export interface MemberGroupSearchResult {
+  readonly id: string;
+  readonly name: string;
+  /** 祖先链(根在前,自身在末),用 " / " 连接。 */
+  readonly breadcrumb: string;
+}
+
+/** 成员选择器候选(GET /database/api/users/search)。 */
+export interface UserSearchResult {
+  readonly userId: string;
+  readonly displayName: string;
+  readonly feishuOpenId: string;
+  readonly avatarUrl: string | null;
+}
+
+/** 回收站条目(GET /database/api/bin)。 */
+export interface BinEntry {
+  readonly id: string;
+  readonly parentId: string | null;
+  readonly kind: NodeKind;
+  readonly name: string;
+  readonly deletedAt: string;
+}
+
+/** 管理后台概览统计(GET /database/api/stats)。 */
+export interface DashboardStats {  readonly folders: number;
+  readonly projects: number;
+  readonly files: number;
+  readonly grants: number;
+  readonly recent: ReadonlyArray<{
+    readonly action: string;
+    readonly actor: string;
+    readonly label: string;
+    /** ISO 串;后端 JSON 序列化后不再是 Date。 */
+    readonly when: string;
+  }>;
+}
+
+/** org 成员(GET /api/org/:slug/members);用户管理面板消费。 */
+export type OrgRole = "OWNER" | "ADMIN" | "MEMBER";
+
+export interface OrgMember {
+  readonly userId: string;
+  readonly feishuOpenId: string;
+  readonly displayName: string;
+  readonly avatarUrl: string | null;
+  readonly role: OrgRole;
+  readonly createdAt: string;
+}

hub/filelib-web/src/routes/+layout.svelte

@@ -0,0 +1,12 @@
+<script lang="ts">
+  import "../app.css";
+  import Toasts from "$lib/Toasts.svelte";
+
+  let { children } = $props();
+</script>
+
+<div class="h-full">
+  {@render children()}
+</div>
+
+<Toasts />

hub/filelib-web/src/routes/+layout.ts

@@ -0,0 +1,7 @@
+/**
+ * 纯 SPA:关掉 SSR 与预渲染,构建产物只有一个 fallback index.html
+ * (adapter-static + fallback,见 svelte.config.js),由 hub 后端在
+ * /app 与 /database/* 两个前缀下原样送出。
+ */
+export const ssr = false;
+export const prerender = false;

hub/filelib-web/src/routes/+page.svelte

@@ -0,0 +1,11 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { goto } from "$app/navigation";
+
+  // 根路径不承载界面:老师端在 /app,管理后台在 /database。
+  onMount(() => {
+    void goto("/app", { replaceState: true });
+  });
+</script>
+
+<div class="flex h-full items-center justify-center text-[13px] text-ink-3">跳转中…</div>

hub/filelib-web/src/routes/app/+page.svelte

@@ -0,0 +1,71 @@
+<script lang="ts">
+  /** 老师端。未登录显示登录卡片;登录后是带左栏导航的文件库(ADR-0031)。 */
+  import { onMount } from "svelte";
+  import { me, authChecked } from "$lib/stores.js";
+  import { loadSession, logout } from "$lib/session.js";
+  import LoginView from "$lib/LoginView.svelte";
+  import GridLibraryView from "$lib/GridLibraryView.svelte";
+  import BinView from "$lib/BinView.svelte";
+  import Icon from "$lib/Icon.svelte";
+
+  onMount(loadSession);
+
+  type View = "library" | "bin";
+  let view = $state<View>("library");
+
+  const tabs: ReadonlyArray<readonly [View, string, "layers" | "trash"]> = [
+    ["library", "文件库", "layers"],
+    ["bin", "回收站", "trash"],
+  ];
+
+  const initial = $derived(($me?.displayName ?? $me?.userId ?? "U").slice(0, 1).toUpperCase());
+</script>
+
+<svelte:head><title>教研数据库</title></svelte:head>
+
+{#if !$authChecked}
+  <div class="flex h-full items-center justify-center text-ink-3">加载中…</div>
+{:else if $me}
+  <div class="flex h-full">
+    <!-- 左栏导航(ADR-0031) -->
+    <nav class="flex w-[200px] shrink-0 flex-col border-r border-line-soft bg-sidebar px-3 py-4">
+      <!-- 标题 -->
+      <div class="mb-3 px-1 text-[15px] font-bold text-ink">教研数据库</div>
+      <div class="mb-2 border-t border-line-soft"></div>
+
+      <!-- 导航项 -->
+      <div class="flex flex-1 flex-col gap-0.5">
+        {#each tabs as [id, label, icon] (id)}
+          <button
+            class="flex items-center gap-2.5 rounded-lg px-3 py-2 text-left text-[13px] transition {view === id
+              ? 'bg-selected font-semibold text-ink'
+              : 'text-ink-2 hover:bg-hover'}"
+            onclick={() => (view = id)}
+          >
+            <span class="text-ink-3"><Icon name={icon} size={15} /></span>
+            {label}
+          </button>
+        {/each}
+      </div>
+
+      <!-- 底部:用户身份 + 退出 -->
+      <div class="mt-auto flex items-center gap-2 border-t border-line-soft pt-3">
+        <span class="flex h-6 w-6 shrink-0 items-center justify-center rounded-full bg-accent text-[11px] font-semibold text-white">{initial}</span>
+        <span class="min-w-0 flex-1 truncate text-[12.5px] text-ink">{$me?.displayName ?? $me?.userId ?? ""}</span>
+        <button
+          class="rounded-lg border border-line-soft px-2 py-1 text-[11.5px] text-ink-3 transition hover:bg-hover hover:text-ink"
+          onclick={logout}
+          title="退出登录"
+        >退出</button>
+      </div>
+    </nav>
+
+    {#if view === "library"}
+      <GridLibraryView />
+    {:else}
+      <BinView />
+    {/if}
+  </div>
+{:else}
+  <LoginView />
+{/if}

hub/filelib-web/src/routes/database/+page.svelte

@@ -0,0 +1,11 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { goto } from "$app/navigation";
+
+  // /database 本身不承载界面(与旧后端 /database/admin → dashboard 的跳转一致)。
+  onMount(() => {
+    void goto("/database/dashboard", { replaceState: true });
+  });
+</script>
+
+<div class="flex h-full items-center justify-center text-[13px] text-ink-3">跳转中…</div>

hub/filelib-web/src/routes/database/admin/+page.svelte

@@ -0,0 +1,63 @@
+<script lang="ts">
+  /**
+   * 管理后台登录页(迁自后端 renderLoginPage)。
+   * 已登录直接跳 dashboard —— 与旧后端路由 /database/admin 的行为一致。
+   */
+  import { onMount } from "svelte";
+  import { goto } from "$app/navigation";
+  import { me, authChecked } from "$lib/stores.js";
+  import { loadSession } from "$lib/session.js";
+  import { loadConfig, type AppConfig } from "$lib/config.js";
+
+  let info = $state<AppConfig | null>(null);
+  let loadFailed = $state(false);
+
+  onMount(async () => {
+    await loadSession();
+    if ($me !== null) {
+      void goto("/database/dashboard", { replaceState: true });
+      return;
+    }
+    try {
+      info = await loadConfig();
+    } catch {
+      loadFailed = true;
+    }
+  });
+</script>
+
+<svelte:head><title>Database Admin · 登录</title></svelte:head>
+
+<div class="flex min-h-full items-center justify-center p-6">
+  <div class="w-full max-w-[380px] rounded-2xl border border-line-soft bg-panel p-9 shadow-[0_4px_20px_rgba(26,26,24,.07)]">
+    <div class="text-center text-[26px] font-semibold text-ink">Database Admin</div>
+    <p class="mt-2.5 mb-8 text-center text-[13px] text-ink-3">使用飞书登录以管理数据库</p>
+
+    {#if !$authChecked}
+      <p class="text-center text-[12.5px] text-ink-3">加载中…</p>
+    {:else if info}
+      <a
+        href="/auth/feishu/{encodeURIComponent(info.orgSlug)}"
+        data-sveltekit-reload
+        class="flex w-full items-center justify-center rounded-lg bg-accent px-4 py-3 text-sm font-medium text-white transition hover:bg-accent-hover"
+      >使用飞书登录</a>
+
+      {#if info.devLoginEnabled}
+        <div class="my-5 flex items-center gap-2.5 text-[11px] text-ink-3">
+          <span class="flex-1 border-t border-line-soft"></span>开发模式
+          <span class="flex-1 border-t border-line-soft"></span>
+        </div>
+        <a
+          href="/database/dev-login"
+          data-sveltekit-reload
+          class="flex w-full items-center justify-center rounded-lg border border-line bg-panel px-4 py-2 text-[12.5px] font-medium text-ink transition hover:bg-hover"
+        >⚡ 一键登录管理员</a>
+        <p class="mt-2.5 text-center text-[11px] text-ink-3">仅开发环境可见 · 跳过飞书 OAuth</p>
+      {/if}
+    {:else if loadFailed}
+      <p class="text-center text-[12.5px] text-danger">无法加载登录配置,请稍后重试</p>
+    {:else}
+      <p class="text-center text-[12.5px] text-ink-3">加载中…</p>
+    {/if}
+  </div>
+</div>

hub/filelib-web/src/routes/database/dashboard/+layout.svelte

@@ -0,0 +1,99 @@
+<script lang="ts">
+  /**
+   * 管理后台外壳(迁自后端 renderDashboard 的侧栏 + 身份区)。
+   *
+   * 与旧实现的区别:六个 tab 是真 URL 路由(/database/dashboard/library 等),
+   * 不再是 location.hash + display:none 切换 —— 刷新不丢位置,链接可分享。
+   *
+   * 权限门:未登录跳 /database/admin;登录但非 OWNER/ADMIN(isWebsiteAdmin)
+   * 显示无权提示。语义与 ADR-0028 一致 —— 管理面板要求 silo org 的 OWNER/ADMIN。
+   */
+  import { onMount } from "svelte";
+  import { goto } from "$app/navigation";
+  import { page } from "$app/state";
+  import { me, authChecked } from "$lib/stores.js";
+  import { loadSession, logout } from "$lib/session.js";
+  import Avatar from "$lib/Avatar.svelte";
+
+  let { children } = $props();
+
+  const NAV = [
+    { seg: "", label: "概览", icon: "M4 13h6V4H4v9Zm0 7h6v-5H4v5Zm10 0h6V11h-6v9Zm0-16v5h6V4h-6Z" },
+    { seg: "library", label: "文件库", icon: "M3 7a2 2 0 0 1 2-2h4l2 2h8a2 2 0 0 1 2 2v9a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V7Z" },
+    { seg: "users", label: "用户管理", icon: "M16 21v-2a4 4 0 0 0-4-4H6a4 4 0 0 0-4 4v2M9 11a4 4 0 1 0 0-8 4 4 0 0 0 0 8Zm13 10v-2a4 4 0 0 0-3-3.87M16 3.13a4 4 0 0 1 0 7.75" },
+    { seg: "groups", label: "Group 管理", icon: "M17 21v-2a4 4 0 0 0-4-4H5a4 4 0 0 0-4 4v2M9 11a4 4 0 1 0 0-8 4 4 0 0 0 0 8Zm14 10v-2a4 4 0 0 0-3-3.87M16 3.13a4 4 0 0 1 0 7.75M23 21v-2a4 4 0 0 0-3-3.87" },
+    { seg: "search", label: "查询", icon: "m21 21-4.3-4.3M11 18a7 7 0 1 0 0-14 7 7 0 0 0 0 14Z" },
+    { seg: "settings", label: "设置", icon: "M12 15a3 3 0 1 0 0-6 3 3 0 0 0 0 6Zm7-3 2 1-2 3-2-1a7 7 0 0 1-2 1l-1 2h-4l-1-2a7 7 0 0 1-2-1l-2 1-2-3 2-1a7 7 0 0 1 0-2l-2-1 2-3 2 1a7 7 0 0 1 2 1l1-2h4l1 2a7 7 0 0 1 0 2l2-1 2 3-2 1a7 7 0 0 1 0 2Z" },
+  ] as const;
+
+  const BASE = "/database/dashboard";
+
+  onMount(async () => {
+    await loadSession();
+    if ($me === null) void goto("/database/admin", { replaceState: true });
+  });
+
+  function href(seg: string): string {
+    return seg === "" ? BASE : `${BASE}/${seg}`;
+  }
+
+  function isActive(seg: string): boolean {
+    const path = page.url.pathname.replace(/\/$/, "");
+    return seg === "" ? path === BASE : path === `${BASE}/${seg}`;
+  }
+</script>
+
+<svelte:head><title>Database Admin</title></svelte:head>
+
+{#if !$authChecked}
+  <div class="flex h-full items-center justify-center text-[13px] text-ink-3">加载中…</div>
+{:else if $me === null}
+  <div class="flex h-full items-center justify-center text-[13px] text-ink-3">跳转到登录页…</div>
+{:else if !$me.isWebsiteAdmin}
+  <div class="flex min-h-full items-center justify-center p-6">
+    <div class="w-full max-w-[420px] rounded-2xl border border-line-soft bg-panel p-9 text-center shadow-[0_4px_20px_rgba(26,26,24,.07)]">
+      <h2 class="mb-2 text-lg font-semibold text-ink">无权访问管理后台</h2>
+      <p class="mb-6 text-[13px] text-ink-3">
+        当前账号不是本组织的所有者或管理员。普通老师请到文件库使用。
+      </p>
+      <a href="/app" class="btn btn-primary justify-center">前往文件库</a>
+      <button class="btn mt-3 w-full justify-center" onclick={logout}>退出登录</button>
+    </div>
+  </div>
+{:else}
+  <div class="flex h-full">
+    <aside class="flex w-[240px] shrink-0 flex-col border-r border-line-soft bg-sidebar">
+      <div class="border-b border-line-soft px-4 py-4">
+        <span class="text-[15px] font-semibold text-ink">Database Admin</span>
+      </div>
+
+      <nav class="flex flex-1 flex-col gap-0.5 p-2.5">
+        {#each NAV as item (item.seg)}
+          {@const active = isActive(item.seg)}
+          <a
+            href={href(item.seg)}
+            class="flex items-center gap-2.5 rounded-[10px] px-3.5 py-2 text-[13px] transition"
+            class:bg-selected={active}
+            class:text-ink={active}
+            class:font-semibold={active}
+            class:text-ink-3={!active}
+            class:hover:bg-hover={!active}
+          >
+            <svg class="h-4 w-4 shrink-0" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><path d={item.icon} /></svg>
+            {item.label}
+          </a>
+        {/each}
+      </nav>
+
+      <div class="m-2.5 flex items-center gap-2.5 border-t border-line-soft px-3 py-2.5">
+        <Avatar displayName={$me.displayName} userId={$me.userId} avatarUrl={$me.avatarUrl} size={26} />
+        <p class="min-w-0 flex-1 truncate text-[12.5px] text-ink" title={$me.userId}>{$me.displayName}</p>
+        <button class="btn !px-2.5 !py-[3px] !text-[11px]" onclick={logout}>退出</button>
+      </div>
+    </aside>
+
+    <div class="flex min-w-0 flex-1 flex-col">
+      {@render children()}
+    </div>
+  </div>
+{/if}

hub/filelib-web/src/routes/database/dashboard/+page.svelte

@@ -0,0 +1,67 @@
+<script lang="ts">
+  /** 概览(迁自后端 renderDashboard 的统计卡片 + 最近活动)。数据走 GET /database/api/stats。 */
+  import { onMount } from "svelte";
+  import { api } from "$lib/api.js";
+  import type { DashboardStats } from "$lib/types.js";
+
+  let stats = $state<DashboardStats | null>(null);
+  let error = $state<string | null>(null);
+
+  onMount(async () => {
+    try {
+      stats = await api<DashboardStats>("/database/api/stats");
+    } catch (e) {
+      error = e instanceof Error ? e.message : String(e);
+    }
+  });
+
+  const cards = $derived([
+    { label: "文件夹", value: stats?.folders },
+    { label: "项目", value: stats?.projects },
+    { label: "文件", value: stats?.files },
+    { label: "活跃授权", value: stats?.grants },
+  ]);
+
+  function fmtWhen(iso: string): string {
+    try {
+      return new Date(iso).toLocaleString("zh-CN");
+    } catch {
+      return iso;
+    }
+  }
+</script>
+
+<section class="flex-1 overflow-y-auto p-7">
+  <h1 class="mb-1 text-lg font-semibold text-ink">概览</h1>
+  <p class="mb-5 text-[11.5px] text-ink-3">文件库实时数据</p>
+
+  {#if error}
+    <div class="panel text-[12.5px] text-danger">{error}</div>
+  {:else}
+    <div class="grid grid-cols-4 gap-4">
+      {#each cards as card (card.label)}
+        <div class="panel !px-5 !py-[18px]">
+          <p class="text-[12.5px] text-ink-3">{card.label}</p>
+          <p class="mt-1.5 text-[28px] font-semibold text-ink">{card.value ?? "—"}</p>
+        </div>
+      {/each}
+    </div>
+
+    <div class="panel mt-[18px]">
+      <h2 class="mb-2 text-[13.5px] font-semibold text-ink">最近活动</h2>
+      {#if stats === null}
+        <div class="quiet py-6 text-center">加载中…</div>
+      {:else if stats.recent.length === 0}
+        <div class="quiet py-[26px] text-center">暂无文件库活动 · 到「文件库」里创建第一个文件夹吧</div>
+      {:else}
+        {#each stats.recent as row (row.action + row.when + row.label)}
+          <div class="flex items-center gap-3 border-t border-line-soft py-2.5 text-[13px]">
+            <span class="tag shrink-0">{row.action}</span>
+            <span class="truncate text-ink">{row.label}</span>
+            <span class="ml-auto shrink-0 text-[11.5px] text-ink-3">{row.actor} · {fmtWhen(row.when)}</span>
+          </div>
+        {/each}
+      {/if}
+    </div>
+  {/if}
+</section>

hub/filelib-web/src/routes/database/dashboard/groups/+page.svelte

@@ -0,0 +1,10 @@
+<script lang="ts">
+  /** Group 管理 tab —— MemberGroup 嵌套树(ADR-0028)。
+   *  外框 padding/overflow 对齐旧 `#tab-groups`(padding:20px;overflow:hidden):
+   *  两栏各自内部滚动,外层不滚。 */
+  import GroupAdmin from "$lib/GroupAdmin.svelte";
+</script>
+
+<div class="min-h-0 flex-1 overflow-hidden p-5">
+  <GroupAdmin />
+</div>

hub/filelib-web/src/routes/database/dashboard/library/+page.svelte

@@ -0,0 +1,8 @@
+<script lang="ts">
+  /** 文件库 tab —— 与老师端 /app 同一个浏览器组件,区别只在侧栏身份区由外壳提供。 */
+  import LibraryView from "$lib/LibraryView.svelte";
+</script>
+
+<div class="flex min-h-0 flex-1 flex-col">
+  <LibraryView />
+</div>

hub/filelib-web/src/routes/database/dashboard/search/+page.svelte

@@ -0,0 +1,4 @@
+<section class="flex-1 overflow-y-auto p-7">
+  <h1 class="mb-1 text-lg font-semibold text-ink">查询</h1>
+  <p class="text-[12.5px] text-ink-3">查询功能建设中</p>
+</section>

hub/filelib-web/src/routes/database/dashboard/settings/+page.svelte

@@ -0,0 +1,4 @@
+<section class="flex-1 overflow-y-auto p-7">
+  <h1 class="mb-1 text-lg font-semibold text-ink">设置</h1>
+  <p class="text-[12.5px] text-ink-3">设置功能建设中</p>
+</section>

hub/filelib-web/src/routes/database/dashboard/users/+page.svelte

@@ -0,0 +1,200 @@
+<script lang="ts">
+  /**
+   * 用户管理(迁自后端 adminPanels.ts renderUsersPanel)。
+   *
+   * 用户 = silo org 的成员,走平台层 /api/org/:slug/members(见 src/admin/routes/membersRoutes.ts)。
+   * 与 Group 管理是两套体系:MemberGroup 是全局主体、不归属 org(ADR-0028),
+   * 这里管的是 org 成员与其角色。
+   */
+  import { onMount } from "svelte";
+  import { page } from "$app/state";
+  import { api } from "$lib/api.js";
+  import { loadConfig } from "$lib/config.js";
+  import { toastOk, toastErr } from "$lib/stores.js";
+  import type { OrgMember, OrgRole } from "$lib/types.js";
+  import Icon from "$lib/Icon.svelte";
+
+  const ROLE_LABEL: Record<OrgRole, string> = {
+    OWNER: "所有者",
+    ADMIN: "管理员",
+    MEMBER: "普通老师",
+  };
+  const ROLES: readonly OrgRole[] = ["OWNER", "ADMIN", "MEMBER"];
+
+  let orgSlug = $state<string | null>(null);
+  let members = $state<OrgMember[] | null>(null);
+  let error = $state<string | null>(null);
+
+  // 列表过滤;授权面板跳转会带 ?q=<userId>,以此为初始过滤词。
+  let filterText = $state(page.url.searchParams.get("q") ?? "");
+
+  let newOpenId = $state("");
+  let newName = $state("");
+  let newRole = $state<OrgRole>("MEMBER");
+  let adding = $state(false);
+
+  const base = $derived(orgSlug === null ? null : `/api/org/${encodeURIComponent(orgSlug)}`);
+
+  /** 按显示名 / userId / openId 过滤(纯前端;成员全量在手)。 */
+  const shown = $derived.by((): OrgMember[] | null => {
+    if (members === null) return null;
+    const q = filterText.trim().toLowerCase();
+    if (q === "") return members;
+    return members.filter(
+      (m) =>
+        m.displayName.toLowerCase().includes(q) ||
+        m.userId.toLowerCase().includes(q) ||
+        m.feishuOpenId.toLowerCase().includes(q),
+    );
+  });
+
+  async function load(): Promise<void> {
+    if (base === null) return;
+    try {
+      const r = await api<{ members: OrgMember[] }>(`${base}/members`);
+      members = r.members;
+      error = null;
+    } catch (e) {
+      error = e instanceof Error ? e.message : String(e);
+    }
+  }
+
+  onMount(async () => {
+    try {
+      orgSlug = (await loadConfig()).orgSlug;
+      await load();
+    } catch (e) {
+      error = e instanceof Error ? e.message : String(e);
+    }
+  });
+
+  async function addMember(): Promise<void> {
+    const feishuOpenId = newOpenId.trim();
+    if (feishuOpenId === "") {
+      toastErr("请填写用户 openId");
+      return;
+    }
+    if (base === null) return;
+    adding = true;
+    try {
+      const displayName = newName.trim();
+      await api(`${base}/members`, {
+        method: "POST",
+        body: { feishuOpenId, role: newRole, ...(displayName !== "" ? { displayName } : {}) },
+      });
+      newOpenId = "";
+      newName = "";
+      toastOk("已添加");
+      await load();
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    } finally {
+      adding = false;
+    }
+  }
+
+  async function setRole(userId: string, role: string): Promise<void> {
+    if (base === null) return;
+    try {
+      await api(`${base}/members/${encodeURIComponent(userId)}`, { method: "PATCH", body: { role } });
+      toastOk("角色已更新");
+      await load();
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+      await load();
+    }
+  }
+
+  async function revoke(userId: string, displayName: string): Promise<void> {
+    if (base === null) return;
+    if (!confirm(`移除成员「${displayName || userId}」?`)) return;
+    try {
+      await api(`${base}/members/${encodeURIComponent(userId)}/revoke`, { method: "POST" });
+      toastOk("已移除");
+      await load();
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+</script>
+
+<section class="flex-1 overflow-y-auto p-7">
+  <h1 class="mb-4 text-lg font-semibold text-ink">用户管理</h1>
+
+  <div class="max-w-[880px]">
+    <div class="panel mb-3.5">
+      <div class="section-title mb-2.5">添加成员</div>
+      <div class="flex flex-wrap items-center gap-2">
+        <input class="input min-w-0 flex-[2]" placeholder="用户 openId(飞书 ou_ 开头)" bind:value={newOpenId} />
+        <input class="input min-w-0 flex-1" placeholder="显示名(可选)" bind:value={newName} />
+        <select class="select !w-[130px]" bind:value={newRole}>
+          {#each ROLES as role (role)}
+            <option value={role}>{ROLE_LABEL[role]}</option>
+          {/each}
+        </select>
+        <button class="btn btn-primary disabled:opacity-50" onclick={addMember} disabled={adding}>
+          {adding ? "添加中…" : "添加"}
+        </button>
+      </div>
+    </div>
+
+    <div class="panel">
+      <div class="mb-2.5 flex items-center justify-between gap-2">
+        <div class="section-title">成员列表</div>
+        <div class="relative w-[260px] shrink-0">
+          <span class="pointer-events-none absolute left-2.5 top-1/2 -translate-y-1/2 text-ink-3">
+            <Icon name="search" size={13} />
+          </span>
+          <input
+            class="input w-full !py-[5px] !pl-8 !text-[12.5px]"
+            placeholder="过滤:名称 / userId / openId"
+            bind:value={filterText}
+          />
+        </div>
+      </div>
+
+      {#if error}
+        <div class="py-3 text-[12.5px] text-danger">{error}</div>
+      {:else if shown === null}
+        <div class="quiet py-[18px] text-center">加载中…</div>
+      {:else if shown.length === 0}
+        <div class="quiet py-[18px] text-center">
+          {filterText.trim() === "" ? "暂无成员" : `无匹配「${filterText.trim()}」的成员`}
+        </div>
+      {:else}
+        <table class="list">
+          <thead>
+            <tr>
+              <th>成员</th>
+              <th>userId</th>
+              <th>角色</th>
+              <th></th>
+            </tr>
+          </thead>
+          <tbody>
+            {#each shown as m (m.userId)}
+              <tr>
+                <td class="text-ink">{m.displayName || m.userId}</td>
+                <td class="file-meta">{m.userId}</td>
+                <td>
+                  <select
+                    class="select !w-[110px] !px-2 !py-[3px] !text-xs"
+                    value={m.role}
+                    onchange={(e) => setRole(m.userId, e.currentTarget.value)}
+                  >
+                    {#each ROLES as role (role)}
+                      <option value={role}>{ROLE_LABEL[role]}</option>
+                    {/each}
+                  </select>
+                </td>
+                <td class="text-right">
+                  <button class="link-danger" onclick={() => revoke(m.userId, m.displayName)}>移除</button>
+                </td>
+              </tr>
+            {/each}
+          </tbody>
+        </table>
+      {/if}
+    </div>
+  </div>
+</section>

hub/filelib-web/svelte.config.js

@@ -0,0 +1,35 @@
+import adapter from '@sveltejs/adapter-static';
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
+
+/**
+ * 老师端 /app 与管理后台 /database/* 共用这一份 SPA 构建产物,由 hub 后端静态托管
+ * (见 hub/src/database/static.ts)。服务端不渲染任何页面,只提供 /database/api/*。
+ *
+ * 两个关键配置:
+ *
+ * - `appDir: '_filelib'` —— 默认 `_app` 会与 admin-web 在同一个 Fastify 实例上注册的
+ *   根 `/_app/*` 资源路由撞车(见 hub/src/admin/static.ts),Fastify 重复路由会直接
+ *   在启动时抛错。改名后两套 SPA 的资源路径互不干扰。
+ *
+ * - `paths.relative: false` —— 同一份 index.html 会在不同深度的 URL 下被送出
+ *   (`/app`、`/database/dashboard/users`),相对资源路径会解析错。必须用绝对路径。
+ */
+const config = {
+	preprocess: vitePreprocess(),
+	kit: {
+		adapter: adapter({
+			pages: 'build',
+			assets: 'build',
+			fallback: 'index.html',
+			precompress: false,
+			strict: false,
+		}),
+		appDir: '_filelib',
+		paths: {
+			base: '',
+			relative: false,
+		},
+	},
+};
+
+export default config;

hub/filelib-web/tsconfig.json

@@ -0,0 +1,17 @@
+{
+  "extends": "./.svelte-kit/tsconfig.json",
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "strict": true,
+    "noUncheckedIndexedAccess": true,
+    "exactOptionalPropertyTypes": true,
+    "verbatimModuleSyntax": true,
+    "skipLibCheck": true,
+    "isolatedModules": true,
+    "resolveJsonModule": true,
+    "useDefineForClassFields": true,
+    "lib": ["ES2022", "DOM", "DOM.Iterable"]
+  }
+}

hub/filelib-web/vite.config.ts

@@ -0,0 +1,27 @@
+import { sveltekit } from "@sveltejs/kit/vite";
+import tailwindcss from "@tailwindcss/vite";
+import { defineConfig } from "vite";
+
+// 老师端 /app + 管理后台 /database/* 的唯一前端工程;构建产物由 hub 后端静态托管。
+// 开发时 vite dev(:5173)把 API/认证/一键登录请求代理到后端(:8788);
+// 页面路由全部由 SvelteKit 客户端路由处理,后端不参与。
+const backend = "http://127.0.0.1:8788";
+
+export default defineConfig({
+  plugins: [tailwindcss(), sveltekit()],
+  server: {
+    port: 5173,
+    proxy: {
+      "/database/api": backend,
+      // 免鉴权 bootstrap(org slug + dev 开关);登录页和用户管理页都靠它。
+      "/database/config": backend,
+      "/auth": backend,
+      // 后端拥有的 DEV 一键登录端点(签 cookie 后 302);不代理会被 SPA 回退吃掉。
+      "/database/dev-login": backend,
+      "/app/dev-login": backend,
+      "/app/dev-login-teacher": backend,
+      // 平台层 org 成员 API(用户管理面板)。
+      "/api/org": backend,
+    },
+  },
+});

hub/package-lock.json

@@ -1,18 +1,19 @@
 {
   "name": "@paradigm/hub",
-  "version": "0.0.35",
+  "version": "0.0.36",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@paradigm/hub",
-      "version": "0.0.35",
+      "version": "0.0.36",
       "dependencies": {
         "@alicloud/credentials": "^2.4.5",
         "@alicloud/docmind-api20220711": "^1.4.15",
         "@alicloud/tea-util": "^1.4.11",
         "@anthropic-ai/claude-agent-sdk": "^0.3.202",
         "@fastify/cookie": "^11.0.2",
+        "@fastify/static": "^10.1.2",
         "@larksuiteoapi/node-sdk": "^1.70.0",
         "@prisma/client": "^6.19.3",
         "ai": "^7.0.16",
@@ -902,6 +903,22 @@
         "node": ">=18"
       }
     },
+    "node_modules/@fastify/accept-negotiator": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/@fastify/accept-negotiator/-/accept-negotiator-2.0.1.tgz",
+      "integrity": "sha512-/c/TW2bO/v9JeEgoD/g1G5GxGeCF1Hafdf79WPmUlgYiBXummY0oX3VVq4yFkKKVBKDNlaDUYoab7g38RpPqCQ==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/fastify"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fastify"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/@fastify/ajv-compiler": {
       "version": "4.0.5",
       "resolved": "https://registry.npmjs.org/@fastify/ajv-compiler/-/ajv-compiler-4.0.5.tgz",
@@ -1033,6 +1050,83 @@
         "ipaddr.js": "^2.1.0"
       }
     },
+    "node_modules/@fastify/send": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/@fastify/send/-/send-4.1.0.tgz",
+      "integrity": "sha512-TMYeQLCBSy2TOFmV95hQWkiTYgC/SEx7vMdV+wnZVX4tt8VBLKzmH8vV9OzJehV0+XBfg+WxPMt5wp+JBUKsVw==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/fastify"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fastify"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "@lukeed/ms": "^2.0.2",
+        "escape-html": "~1.0.3",
+        "fast-decode-uri-component": "^1.0.1",
+        "http-errors": "^2.0.0",
+        "mime": "^3"
+      }
+    },
+    "node_modules/@fastify/static": {
+      "version": "10.1.2",
+      "resolved": "https://registry.npmjs.org/@fastify/static/-/static-10.1.2.tgz",
+      "integrity": "sha512-G/g18cG9tLutT/OVyN1AIsHIl9L1UwmJ+S3dkyhVpplIx0nEMicd7RGQ+uJLyhKKF4a3tTcQydccn3Mop1fX+Q==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/fastify"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fastify"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "@fastify/accept-negotiator": "^2.0.0",
+        "@fastify/error": "^4.0.0",
+        "@fastify/send": "^4.0.0",
+        "content-disposition": "^2.0.1",
+        "fastify-plugin": "^6.0.0",
+        "fastq": "^1.17.1",
+        "glob": "^13.0.0"
+      }
+    },
+    "node_modules/@fastify/static/node_modules/content-disposition": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-2.0.1.tgz",
+      "integrity": "sha512-e+H0ZXHSWYrENhQzw1LPuP4oF5MzVKmDU6d3hxlvaPEYLLg62MxtQNPRx4SYSuYJSBUgnQIG4HIN2tEtNv7Dog==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
+      }
+    },
+    "node_modules/@fastify/static/node_modules/fastify-plugin": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/fastify-plugin/-/fastify-plugin-6.0.0.tgz",
+      "integrity": "sha512-fZOty7z3O7vOliF6d8bHE3wiEh1KcNnKEQensSgTk9C1DvN6nRLS++XVd86v33Hw/8u9Un8A1zDrQ8ujcQDHEg==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/fastify"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fastify"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/@hono/node-server": {
       "version": "1.19.14",
       "resolved": "https://registry.npmjs.org/@hono/node-server/-/node-server-1.19.14.tgz",
@@ -1068,6 +1162,15 @@
         "ws": "^8.19.0"
       }
     },
+    "node_modules/@lukeed/ms": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/@lukeed/ms/-/ms-2.0.2.tgz",
+      "integrity": "sha512-9I2Zn6+NJLfaGoz9jN3lpwDgAYvfGeNYdbAIjJOqzs4Tpc+VU3Jqq4IofSUBKajiDS8k9fZIg18/z13mpk1bsA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/@modelcontextprotocol/sdk": {
       "version": "1.29.0",
       "resolved": "https://registry.npmjs.org/@modelcontextprotocol/sdk/-/sdk-1.29.0.tgz",
@@ -1934,6 +2037,15 @@
         "proxy-from-env": "^2.1.0"
       }
     },
+    "node_modules/balanced-match": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-4.0.4.tgz",
+      "integrity": "sha512-BLrgEcRTwX2o6gGxGOCNyMvGSp35YofuYzw9h1IMTRmKqttAZZVU67bdb9Pr2vUHA8+j3i2tJfjO6C6+4myGTA==",
+      "license": "MIT",
+      "engines": {
+        "node": "18 || 20 || >=22"
+      }
+    },
     "node_modules/body-parser": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-2.3.0.tgz",
@@ -1973,6 +2085,18 @@
         "url": "https://opencollective.com/express"
       }
     },
+    "node_modules/brace-expansion": {
+      "version": "5.0.7",
+      "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-5.0.7.tgz",
+      "integrity": "sha512-7oFy703dxfY3/NLxC1fh2SUCQ0H9rmAY+5EpDVfXjUTTs+HEwR2nYaqLv+GWcTsumwxPfiz6CzCNkwXwBUwqCA==",
+      "license": "MIT",
+      "dependencies": {
+        "balanced-match": "^4.0.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      }
+    },
     "node_modules/bytes": {
       "version": "3.1.2",
       "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
@@ -2254,7 +2378,6 @@
       "resolved": "https://registry.npmjs.org/depd/-/depd-2.0.0.tgz",
       "integrity": "sha512-g7nH6P6dyDioJogAAGprGpCtVImJhpPk/roCzdb3fIh61/s/nPsfR6onyMwkCAR/OlC3yBC0lESvUoQEAssIrw==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">= 0.8"
       }
@@ -2447,8 +2570,7 @@
       "version": "1.0.3",
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
       "integrity": "sha512-NiSupZ4OeuGwr68lGIeym/ksIZMJodUGOSCZ/FSnTxcrekbvqrgdUxlJOMpijaKZVjAJrWrGs/6Jy8OMuyj9ow==",
-      "license": "MIT",
-      "peer": true
+      "license": "MIT"
     },
     "node_modules/estree-walker": {
       "version": "3.0.3",
@@ -2947,6 +3069,23 @@
         "giget": "dist/cli.mjs"
       }
     },
+    "node_modules/glob": {
+      "version": "13.0.6",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-13.0.6.tgz",
+      "integrity": "sha512-Wjlyrolmm8uDpm/ogGyXZXb1Z+Ca2B8NbJwqBVg0axK9GbBeoS7yGV6vjXnYdGm6X53iehEuxxbyiKp8QmN4Vw==",
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "minimatch": "^10.2.2",
+        "minipass": "^7.1.3",
+        "path-scurry": "^2.0.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/gopd": {
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/gopd/-/gopd-1.2.0.tgz",
@@ -3013,7 +3152,6 @@
       "resolved": "https://registry.npmjs.org/http-errors/-/http-errors-2.0.1.tgz",
       "integrity": "sha512-4FbRdAX+bSdmo4AUFuS0WNiPz8NgFt+r8ThgNWmlrjQjt1Q7ZR9+zTlce2859x4KSXrwIsaeTqDoKQmtP8pLmQ==",
       "license": "MIT",
-      "peer": true,
       "dependencies": {
         "depd": "~2.0.0",
         "inherits": "~2.0.4",
@@ -3096,8 +3234,7 @@
       "version": "2.0.4",
       "resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.4.tgz",
       "integrity": "sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==",
-      "license": "ISC",
-      "peer": true
+      "license": "ISC"
     },
     "node_modules/ini": {
       "version": "1.3.8",
@@ -3546,6 +3683,15 @@
       "integrity": "sha512-mNAgZ1GmyNhD7AuqnTG3/VQ26o760+ZYBPKjPvugO8+nLbYfX6TVpJPseBvopbdY+qpZ/lKUnmEc1LeZYS3QAA==",
       "license": "Apache-2.0"
     },
+    "node_modules/lru-cache": {
+      "version": "11.5.2",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.5.2.tgz",
+      "integrity": "sha512-4pfM1Ff0x50o0tQwb5ucw/RzNyD0/YJME6IVcStalZuMWxdt3sR3huStTtxz4PUmvZfRguvDejasvQ2kifR11g==",
+      "license": "BlueOak-1.0.0",
+      "engines": {
+        "node": "20 || >=22"
+      }
+    },
     "node_modules/magic-string": {
       "version": "0.30.21",
       "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.21.tgz",
@@ -3588,6 +3734,18 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/mime": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/mime/-/mime-3.0.0.tgz",
+      "integrity": "sha512-jSCU7/VB1loIWBZe14aEYHU/+1UMEHoaO7qxCOVJOw9GgH72VAWppxNcjU+x9a2k3GSIBXNKxXQFqRvvZ7vr3A==",
+      "license": "MIT",
+      "bin": {
+        "mime": "cli.js"
+      },
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
     "node_modules/mime-db": {
       "version": "1.52.0",
       "resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.52.0.tgz",
@@ -3609,6 +3767,30 @@
         "node": ">= 0.6"
       }
     },
+    "node_modules/minimatch": {
+      "version": "10.2.5",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.5.tgz",
+      "integrity": "sha512-MULkVLfKGYDFYejP07QOurDLLQpcjk7Fw+7jXS2R2czRQzR56yHRveU5NDJEOviH+hETZKSkIk5c+T23GjFUMg==",
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "brace-expansion": "^5.0.5"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
+    "node_modules/minipass": {
+      "version": "7.1.3",
+      "resolved": "https://registry.npmjs.org/minipass/-/minipass-7.1.3.tgz",
+      "integrity": "sha512-tEBHqDnIoM/1rXME1zgka9g6Q2lcoCkxHLuc7ODJ5BxbP5d4c2Z5cGgtXAku59200Cx7diuHTOYfSBD8n6mm8A==",
+      "license": "BlueOak-1.0.0",
+      "engines": {
+        "node": ">=16 || 14 >=14.17"
+      }
+    },
     "node_modules/moment": {
       "version": "2.30.1",
       "resolved": "https://registry.npmjs.org/moment/-/moment-2.30.1.tgz",
@@ -3792,6 +3974,22 @@
         "node": ">=8"
       }
     },
+    "node_modules/path-scurry": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/path-scurry/-/path-scurry-2.0.2.tgz",
+      "integrity": "sha512-3O/iVVsJAPsOnpwWIeD+d6z/7PmqApyQePUtCndjatj/9I5LylHvt5qluFaBT3I5h3r1ejfR056c+FCv+NnNXg==",
+      "license": "BlueOak-1.0.0",
+      "dependencies": {
+        "lru-cache": "^11.0.0",
+        "minipass": "^7.1.2"
+      },
+      "engines": {
+        "node": "18 || 20 || >=22"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/isaacs"
+      }
+    },
     "node_modules/path-to-regexp": {
       "version": "8.4.2",
       "resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-8.4.2.tgz",
@@ -4370,8 +4568,7 @@
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
       "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw==",
-      "license": "ISC",
-      "peer": true
+      "license": "ISC"
     },
     "node_modules/shebang-command": {
       "version": "2.0.0",
@@ -4570,7 +4767,6 @@
       "resolved": "https://registry.npmjs.org/statuses/-/statuses-2.0.2.tgz",
       "integrity": "sha512-DvEy55V3DB7uknRo+4iOGT5fP1slR8wQohVdknigZPMpMstaKJQWhwiYBACJE3Ul2pTnATihhBYnRhZQHGBiRw==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">= 0.8"
       }
@@ -4658,7 +4854,6 @@
       "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
       "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA==",
       "license": "MIT",
-      "peer": true,
       "engines": {
         "node": ">=0.6"
       }

hub/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@paradigm/hub",
-  "version": "0.0.35",
+  "version": "0.0.36",
   "private": true,
   "type": "module",
   "engines": {
@@ -12,6 +12,7 @@
     "@alicloud/tea-util": "^1.4.11",
     "@anthropic-ai/claude-agent-sdk": "^0.3.202",
     "@fastify/cookie": "^11.0.2",
+    "@fastify/static": "^10.1.2",
     "@larksuiteoapi/node-sdk": "^1.70.0",
     "@prisma/client": "^6.19.3",
     "ai": "^7.0.16",
@@ -30,10 +31,10 @@
       "axios": "1.18.1"
     }
   },
-  "description": "Curriculum Project Hub — org-scoped Feishu collaboration and confined Agent runtime. Aligns to spec/System through ADR-0024.",
+  "description": "Curriculum Project Hub — org-scoped Feishu collaboration and confined Agent runtime. Semantics pinned by docs/adr/ (ADR-0001 through ADR-0027).",
   "scripts": {
     "dev": "npm run prisma:migrate && tsx watch src/server.ts",
-    "build": "tsc -p tsconfig.json && npm run admin:build",
+    "build": "tsc -p tsconfig.json && npm run admin:build && npm run filelib:build",
     "start": "npm run prisma:migrate && node dist/server.js",
     "check": "tsc -p tsconfig.json --noEmit",
     "audit:production": "npm audit --omit=dev --audit-level=high",
@@ -48,6 +49,8 @@
     "test": "vitest run",
     "test:watch": "vitest",
     "admin:dev": "npm run dev --prefix admin-web",
-    "admin:build": "npm run build --prefix admin-web"
+    "admin:build": "npm run build --prefix admin-web",
+    "filelib:dev": "npm run dev --prefix filelib-web",
+    "filelib:build": "npm run build --prefix filelib-web"
   }
 }

hub/prisma/migrations/20260714120000_drop_legacy_platform_role_assignment/migration.sql

@@ -1,6 +1,6 @@
 -- ADR-0023 rejected the legacy `PlatformRoleAssignment` / `PlatformRole`{ADMIN,TEACHER}
 -- model: the platform administration control plane is a separate identity/session/
--- audit surface (see `Spec.System.PlatformAdministration`), intentionally not built
+-- audit surface, intentionally not built
 -- in alpha (ADR-0025, `hub/deploy/README.md`). The legacy table has no runtime
 -- reader — no guard, route, or service queries it for an authorization decision —
 -- and ADR-0023 requires it to be migrated/replaced before the platform panel ships.

hub/prisma/migrations/20260721120000_file_library/migration.sql

@@ -0,0 +1,92 @@
+-- File library (文件库) — 语义锚定:仓库根《文件库-接口契约.md》、.omo/文件库-开工计划.md (D11–D19)。
+-- 本地无 PG 时手写;有 PG 后可用 `prisma migrate diff` 核对与 schema 的一致性。
+
+-- CreateEnum
+CREATE TYPE "FileLibNodeKind" AS ENUM ('FOLDER', 'PROJECT');
+CREATE TYPE "FileLibProvisionStatus" AS ENUM ('PROVISIONING', 'READY', 'FAILED');
+CREATE TYPE "FileLibRole" AS ENUM ('VIEW', 'EDIT', 'MANAGE');
+CREATE TYPE "FileLibPrincipalType" AS ENUM ('USER', 'GROUP');
+CREATE TYPE "FileLibExportStatus" AS ENUM ('QUEUED', 'RUNNING', 'DONE', 'FAILED');
+
+-- CreateTable
+CREATE TABLE "FileLibNode" (
+    "id" TEXT NOT NULL,
+    "organizationId" TEXT NOT NULL,
+    "parentId" TEXT,
+    "kind" "FileLibNodeKind" NOT NULL,
+    "name" TEXT NOT NULL,
+    "nameLower" TEXT NOT NULL,
+    "pathIds" TEXT NOT NULL,
+    "creatorId" TEXT NOT NULL,
+    "provisionStatus" "FileLibProvisionStatus" NOT NULL DEFAULT 'READY',
+    "storageDir" TEXT,
+    "deletedAt" TIMESTAMP(3),
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "FileLibNode_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE "FileLibGrant" (
+    "id" TEXT NOT NULL,
+    "organizationId" TEXT NOT NULL,
+    "nodeId" TEXT NOT NULL,
+    "principalType" "FileLibPrincipalType" NOT NULL,
+    "principalId" TEXT NOT NULL,
+    "role" "FileLibRole" NOT NULL,
+    "isCreatorGrant" BOOLEAN NOT NULL DEFAULT false,
+    "createdByUserId" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "revokedAt" TIMESTAMP(3),
+
+    CONSTRAINT "FileLibGrant_pkey" PRIMARY KEY ("id")
+);
+
+CREATE TABLE "FileLibProjectSettings" (
+    "nodeId" TEXT NOT NULL,
+    "independentPermissionsEnabled" BOOLEAN NOT NULL DEFAULT false,
+
+    CONSTRAINT "FileLibProjectSettings_pkey" PRIMARY KEY ("nodeId")
+);
+
+CREATE TABLE "FileLibExportJob" (
+    "id" TEXT NOT NULL,
+    "organizationId" TEXT NOT NULL,
+    "nodeId" TEXT NOT NULL,
+    "target" TEXT NOT NULL,
+    "params" JSONB NOT NULL,
+    "status" "FileLibExportStatus" NOT NULL DEFAULT 'QUEUED',
+    "downloadUrl" TEXT,
+    "error" TEXT,
+    "createdByUserId" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "FileLibExportJob_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex (schema-declared)
+CREATE INDEX "FileLibNode_organizationId_parentId_deletedAt_idx" ON "FileLibNode"("organizationId", "parentId", "deletedAt");
+CREATE INDEX "FileLibNode_organizationId_pathIds_idx" ON "FileLibNode"("organizationId", "pathIds");
+CREATE INDEX "FileLibNode_creatorId_idx" ON "FileLibNode"("creatorId");
+CREATE INDEX "FileLibGrant_organizationId_revokedAt_idx" ON "FileLibGrant"("organizationId", "revokedAt");
+CREATE INDEX "FileLibGrant_principalType_principalId_revokedAt_idx" ON "FileLibGrant"("principalType", "principalId", "revokedAt");
+CREATE INDEX "FileLibGrant_nodeId_revokedAt_idx" ON "FileLibGrant"("nodeId", "revokedAt");
+CREATE INDEX "FileLibExportJob_organizationId_status_idx" ON "FileLibExportJob"("organizationId", "status");
+
+-- D14:活跃兄弟节点大小写不敏感唯一。root 的 parentId 为 NULL,用 COALESCE 归入同一键空间。
+CREATE UNIQUE INDEX "FileLibNode_active_sibling_name_key"
+    ON "FileLibNode"("organizationId", COALESCE("parentId", ''), "nameLower")
+    WHERE "deletedAt" IS NULL;
+
+-- 契约 2.3:同一节点上同一 principal 至多一条活跃授权(Postgres 原生 UNIQUE 无法约束 NULL revokedAt)。
+CREATE UNIQUE INDEX "FileLibGrant_active_unique"
+    ON "FileLibGrant"("nodeId", "principalType", "principalId")
+    WHERE "revokedAt" IS NULL;
+
+-- AddForeignKey
+ALTER TABLE "FileLibNode" ADD CONSTRAINT "FileLibNode_organizationId_fkey" FOREIGN KEY ("organizationId") REFERENCES "Organization"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+ALTER TABLE "FileLibNode" ADD CONSTRAINT "FileLibNode_parentId_fkey" FOREIGN KEY ("parentId") REFERENCES "FileLibNode"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+ALTER TABLE "FileLibGrant" ADD CONSTRAINT "FileLibGrant_nodeId_fkey" FOREIGN KEY ("nodeId") REFERENCES "FileLibNode"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+ALTER TABLE "FileLibProjectSettings" ADD CONSTRAINT "FileLibProjectSettings_nodeId_fkey" FOREIGN KEY ("nodeId") REFERENCES "FileLibNode"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+ALTER TABLE "FileLibExportJob" ADD CONSTRAINT "FileLibExportJob_nodeId_fkey" FOREIGN KEY ("nodeId") REFERENCES "FileLibNode"("id") ON DELETE CASCADE ON UPDATE CASCADE;

hub/prisma/migrations/20260723120000_member_group_hierarchy/migration.sql

@@ -0,0 +1,70 @@
+-- Global, unlimited-depth member group hierarchy (requirement 3.1-3.3).
+-- Managed only by the platform super administrator; deliberately NOT
+-- org-scoped. Stores membership + nesting only, never permission data.
+-- Deletion is soft (archivedAt / revokedAt markers); a group delete
+-- cascade-soft-deletes its whole subtree as an application operation.
+-- The permission side (GROUP principal, FOLDER resource, grant inheritance)
+-- is intentionally deferred to a later migration.
+
+-- CreateTable
+CREATE TABLE "MemberGroup" (
+    "id" TEXT NOT NULL,
+    "parentId" TEXT,
+    "name" TEXT NOT NULL,
+    "description" TEXT,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "updatedAt" TIMESTAMP(3) NOT NULL,
+    "archivedAt" TIMESTAMP(3),
+
+    CONSTRAINT "MemberGroup_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "MemberGroupMembership" (
+    "id" TEXT NOT NULL,
+    "groupId" TEXT NOT NULL,
+    "userId" TEXT NOT NULL,
+    "createdAt" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "revokedAt" TIMESTAMP(3),
+
+    CONSTRAINT "MemberGroupMembership_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "MemberGroupClosure" (
+    "ancestorId" TEXT NOT NULL,
+    "descendantId" TEXT NOT NULL,
+    "depth" INTEGER NOT NULL,
+
+    CONSTRAINT "MemberGroupClosure_pkey" PRIMARY KEY ("ancestorId", "descendantId")
+);
+
+-- CreateIndex
+CREATE INDEX "MemberGroup_parentId_archivedAt_idx" ON "MemberGroup"("parentId", "archivedAt");
+
+-- CreateIndex
+CREATE INDEX "MemberGroupMembership_userId_revokedAt_idx" ON "MemberGroupMembership"("userId", "revokedAt");
+
+-- CreateIndex
+CREATE INDEX "MemberGroupMembership_groupId_revokedAt_idx" ON "MemberGroupMembership"("groupId", "revokedAt");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "MemberGroupMembership_groupId_userId_revokedAt_key" ON "MemberGroupMembership"("groupId", "userId", "revokedAt");
+
+-- CreateIndex
+CREATE INDEX "MemberGroupClosure_descendantId_idx" ON "MemberGroupClosure"("descendantId");
+
+-- AddForeignKey
+ALTER TABLE "MemberGroup" ADD CONSTRAINT "MemberGroup_parentId_fkey" FOREIGN KEY ("parentId") REFERENCES "MemberGroup"("id") ON DELETE RESTRICT ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "MemberGroupMembership" ADD CONSTRAINT "MemberGroupMembership_groupId_fkey" FOREIGN KEY ("groupId") REFERENCES "MemberGroup"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "MemberGroupMembership" ADD CONSTRAINT "MemberGroupMembership_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "MemberGroupClosure" ADD CONSTRAINT "MemberGroupClosure_ancestorId_fkey" FOREIGN KEY ("ancestorId") REFERENCES "MemberGroup"("id") ON DELETE CASCADE ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "MemberGroupClosure" ADD CONSTRAINT "MemberGroupClosure_descendantId_fkey" FOREIGN KEY ("descendantId") REFERENCES "MemberGroup"("id") ON DELETE CASCADE ON UPDATE CASCADE;

hub/prisma/migrations/20260723130000_filelib_description/migration.sql

@@ -0,0 +1,2 @@
+-- 为 FileLibNode 加简介字段，老师在创建/概览页填写。
+ALTER TABLE "FileLibNode" ADD COLUMN "description" TEXT;

hub/prisma/migrations/20260731050706_filelib_recent_visit/migration.sql

@@ -0,0 +1,65 @@
+-- DropIndex
+DROP INDEX "ProjectSearchDocument_normalizedBreadcrumb_trgm_idx";
+
+-- DropIndex
+DROP INDEX "ProjectSearchDocument_normalizedCode_trgm_idx";
+
+-- DropIndex
+DROP INDEX "ProjectSearchDocument_normalizedName_trgm_idx";
+
+-- DropIndex
+DROP INDEX "ProjectSearchDocument_normalizedSearchText_trgm_idx";
+
+-- DropIndex
+DROP INDEX "Team_archivedAt_idx";
+
+-- AlterTable
+ALTER TABLE "ExternalDirectoryConnection" ALTER COLUMN "updatedAt" DROP DEFAULT;
+
+-- AlterTable
+ALTER TABLE "Organization" ALTER COLUMN "updatedAt" DROP DEFAULT;
+
+-- AlterTable
+ALTER TABLE "ProjectSearchDocument" ALTER COLUMN "updatedAt" DROP DEFAULT;
+
+-- CreateTable
+CREATE TABLE "FileLibRecentVisit" (
+    "id" TEXT NOT NULL,
+    "organizationId" TEXT NOT NULL,
+    "userId" TEXT NOT NULL,
+    "nodeId" TEXT NOT NULL,
+    "filePath" TEXT NOT NULL DEFAULT '',
+    "openedAt" TIMESTAMP(3) NOT NULL,
+
+    CONSTRAINT "FileLibRecentVisit_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateIndex
+CREATE INDEX "FileLibRecentVisit_organizationId_userId_openedAt_idx" ON "FileLibRecentVisit"("organizationId", "userId", "openedAt");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "FileLibRecentVisit_organizationId_userId_nodeId_filePath_key" ON "FileLibRecentVisit"("organizationId", "userId", "nodeId", "filePath");
+
+-- RenameForeignKey
+ALTER TABLE "OrganizationFeishuApplicationConnection" RENAME CONSTRAINT "OrganizationFeishuApplicationConnection_activeSecretVersionId_f" TO "OrganizationFeishuApplicationConnection_activeSecretVersio_fkey";
+
+-- RenameIndex
+ALTER INDEX "ExternalPrincipalMembership_principalType_principalId_revokedAt" RENAME TO "ExternalPrincipalMembership_principalType_principalId_revok_idx";
+
+-- RenameIndex
+ALTER INDEX "ExternalPrincipalMembership_userId_principalType_principalId_co" RENAME TO "ExternalPrincipalMembership_userId_principalType_principalI_key";
+
+-- RenameIndex
+ALTER INDEX "OrganizationAgentRoleSkill_organizationId_agentRoleId_sortOrder" RENAME TO "OrganizationAgentRoleSkill_organizationId_agentRoleId_sortO_idx";
+
+-- RenameIndex
+ALTER INDEX "OrganizationCapabilityConnection_organizationId_capabilityId_ke" RENAME TO "OrganizationCapabilityConnection_organizationId_capabilityI_key";
+
+-- RenameIndex
+ALTER INDEX "OrganizationFeishuApplicationConnection_activeSecretVersionId_k" RENAME TO "OrganizationFeishuApplicationConnection_activeSecretVersion_key";
+
+-- RenameIndex
+ALTER INDEX "OrganizationFeishuApplicationConnection_appIdentityFingerprint_" RENAME TO "OrganizationFeishuApplicationConnection_appIdentityFingerpr_key";
+
+-- RenameIndex
+ALTER INDEX "TeamExternalBinding_teamId_principalType_principalId_revokedAt_" RENAME TO "TeamExternalBinding_teamId_principalType_principalId_revoke_key";

hub/prisma/migrations/20260731090000_drop_filelib_recent_visit/migration.sql

@@ -0,0 +1,2 @@
+-- ADR-0032:最近打开模块移除,删表(今日新建,无生产数据)。
+DROP TABLE "FileLibRecentVisit";

hub/prisma/schema.prisma

@@ -1,6 +1,6 @@
 // Prisma schema for Curriculum Project Hub.
 //
-// Aligns to spec/System (ADR-0001..0004, 0017). Key divergences from the
+// Aligns to ADR-0001..0004, 0017. Key divergences from the
 // legacy teaching-material-host-service schema, each deliberate:
 //
 //  - AgentSession is provider/model-bound. Provider runtime cursors such as
@@ -11,8 +11,8 @@
 //  - ProjectGroupBinding is project→chat only (ADR-0001 1:1); legacy mixed
 //    user/chat targets into one binding table.
 //  - PermissionGrant + PermissionSettings land (ADR-0004), missing in legacy.
-//  - AgentRunStatus adds WAITING_FOR_USER + TIMED_OUT (spec RunState; enum
-//    completeness OPEN — add states without a schema migration war).
+//  - AgentRunStatus adds WAITING_FOR_USER + TIMED_OUT (the run-state set is
+//    open — add states without a schema migration war).
 
 generator client {
   provider = "prisma-client-js"
@@ -50,6 +50,7 @@ model Organization {
   projectGroupBindings         ProjectGroupBinding[]
   auditEntries                 AuditEntry[]                             @relation("organizationAudit")
   projectSearchDocuments       ProjectSearchDocument[]
+  fileLibNodes                 FileLibNode[]
 
   @@index([status])
 }
@@ -61,7 +62,7 @@ enum OrganizationStatus {
 }
 
 /// Org-scoped membership role. Distinct from project PermissionRole and from
-/// the platform administrator surface (ADR-0023 / Spec.System.PlatformAdministration),
+/// the platform administrator surface (ADR-0023),
 /// which is a separate control plane not modeled in alpha (ADR-0025).
 model OrganizationMembership {
   id             String                 @id @default(cuid())
@@ -193,6 +194,7 @@ model User {
   heldLocks                    ProjectAgentLock[]                   @relation("lockHolder")
   feishuBindings               ProjectGroupBinding[]                @relation("bindingCreator")
   teamMemberships              TeamMembership[]
+  memberGroupMemberships       MemberGroupMembership[]
   externalPrincipalMemberships ExternalPrincipalMembership[]
   permissionGrants             PermissionGrant[]                    @relation("grantCreator")
   roleTriggerGrants            RoleTriggerGrant[]                   @relation("roleGrantCreator")
@@ -393,6 +395,67 @@ model TeamExternalBinding {
   @@index([teamId, revokedAt])
 }
 
+// --- Member groups (global, nestable authorization principal) ------------
+
+/// Global, unlimited-depth member group. Managed only by the platform super administrator (ADR-0023);
+/// Deletion is soft: `archivedAt` is a marker.
+/// Deleting a group cascade-soft-deletes its whole subtree — an application
+/// operation (walk the subtree, stamp archivedAt), not a DB constraint.
+model MemberGroup {
+  id          String    @id @default(cuid())
+  parentId    String?
+  name        String
+  description String?
+  createdAt   DateTime  @default(now())
+  updatedAt   DateTime  @updatedAt
+  archivedAt  DateTime?
+
+  parent       MemberGroup?            @relation("groupTree", fields: [parentId], references: [id], onDelete: Restrict)
+  children     MemberGroup[]           @relation("groupTree")
+  memberships  MemberGroupMembership[]
+  asAncestor   MemberGroupClosure[]    @relation("ancestor")
+  asDescendant MemberGroupClosure[]    @relation("descendant")
+
+  @@index([parentId, archivedAt])
+}
+
+/// User↔group many-to-many; a user may belong to multiple groups. Soft delete
+/// via `revokedAt` (same pattern as TeamMembership) allows re-adding a removed
+/// member. `userId, revokedAt` index is the resolution hot path: fetch a user's direct groups.
+model MemberGroupMembership {
+  id        String    @id @default(cuid())
+  groupId   String
+  userId    String
+  createdAt DateTime  @default(now())
+  revokedAt DateTime?
+
+  group MemberGroup @relation(fields: [groupId], references: [id], onDelete: Cascade)
+  user  User        @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@unique([groupId, userId, revokedAt])
+  @@index([userId, revokedAt])
+  @@index([groupId, revokedAt])
+}
+
+/// Transitive closure of the MemberGroup tree. Every group has a depth=0
+/// self row. Turns ancestor/descendant resolution into one indexed join
+/// instead of a recursive CTE; maintained only on create / reparent (rare
+/// super-admin ops, so the write cost is amortized against hot reads). On soft
+/// delete the closure rows are retained; resolution filters by
+/// MemberGroup.archivedAt. Reparent must reject a new parent inside the moved
+/// subtree (cycle guard).
+model MemberGroupClosure {
+  ancestorId   String
+  descendantId String
+  depth        Int
+
+  ancestor   MemberGroup @relation("ancestor", fields: [ancestorId], references: [id], onDelete: Cascade)
+  descendant MemberGroup @relation("descendant", fields: [descendantId], references: [id], onDelete: Cascade)
+
+  @@id([ancestorId, descendantId])
+  @@index([descendantId])
+}
+
 /// Locally synchronized Feishu external principal membership.
 model ExternalDirectoryConnection {
   id               String    @id @default(cuid())
@@ -923,3 +986,127 @@ model CapabilityCredentialVersion {
   @@index([keyId])
   @@index([createdByUserId])
 }
+
+// --- File library (文件库) -------------------------------------------------
+//
+// 独立模块,语义由仓库根《文件库-接口契约.md》(C/D 编号)与 .omo/文件库-开工计划.md
+// (D11–D19)锚定。与上面的 Folder/Project(hub 自己的 explorer,ADR-0021)是两套
+// 体系,不复用、不互相引用。
+
+/// 文件库目录树节点:文件夹(容器)或项目(叶子,关联 git 仓库)。
+/// parentId 是树的权威关系;pathIds 是 id 编码的物化路径(派生),随 create/move
+/// 在事务内维护(计划 D12;name 不入路径,rename 不重写后代)。
+model FileLibNode {
+  id              String                 @id
+  organizationId  String
+  parentId        String?
+  kind            FileLibNodeKind
+  name            String
+  /// D14:NFC+trim 的小写形式;活跃兄弟节点大小写不敏感唯一(部分唯一索引在迁移 SQL)。
+  nameLower       String
+  /// id 编码物化路径,形如 "/rootId/childId/selfId"。祖先展开与前缀查询都用它。
+  pathIds         String
+  /// D11:创建者不可变,自动持有 isCreatorGrant=true 的 MANAGE grant。
+  /// 故意不建 FK:这是不可变历史事实,不随 User 生命周期变化。
+  creatorId       String
+  /// 老师可填写的简介，创建/概览页展示，通俗易懂地说明这个节点的用途。
+  description     String?
+  /// 项目 provisioning 状态机(DB/git 双写协调,Metis 风险#1);文件夹恒 READY。
+  provisionStatus FileLibProvisionStatus @default(READY)
+  /// 项目仓库目录(绝对路径);文件夹为 null。
+  storageDir      String?
+  deletedAt       DateTime?
+  createdAt       DateTime               @default(now())
+  updatedAt       DateTime               @updatedAt
+
+  organization    Organization            @relation(fields: [organizationId], references: [id], onDelete: Cascade)
+  parent          FileLibNode?            @relation("fileLibTree", fields: [parentId], references: [id], onDelete: Restrict)
+  children        FileLibNode[]           @relation("fileLibTree")
+  grants          FileLibGrant[]
+  projectSettings FileLibProjectSettings?
+  exportJobs      FileLibExportJob[]
+
+  @@index([organizationId, parentId, deletedAt])
+  @@index([organizationId, pathIds])
+  @@index([creatorId])
+}
+
+enum FileLibNodeKind {
+  FOLDER
+  PROJECT
+}
+
+enum FileLibProvisionStatus {
+  PROVISIONING
+  READY
+  FAILED
+}
+
+/// 文件库权限级别:MANAGE > EDIT > VIEW(契约 2.2,只取最高、无降权)。
+enum FileLibRole {
+  VIEW
+  EDIT
+  MANAGE
+}
+
+enum FileLibPrincipalType {
+  USER
+  GROUP
+}
+
+/// 契约 2.3:grant 直接挂在节点上,最终权限 = max(个人, 递归 Group, 祖先继承)。
+/// 活跃授权唯一性由迁移里的部分唯一索引保证(revokedAt IS NULL)。
+model FileLibGrant {
+  id              String               @id @default(cuid())
+  organizationId  String
+  nodeId          String
+  principalType   FileLibPrincipalType
+  principalId     String
+  role            FileLibRole
+  /// D11:创建者自动 grant;独立权限开关关闭时,项目级 grant 里只有它仍生效。
+  isCreatorGrant  Boolean              @default(false)
+  createdByUserId String?
+  createdAt       DateTime             @default(now())
+  revokedAt       DateTime?
+
+  node FileLibNode @relation(fields: [nodeId], references: [id], onDelete: Cascade)
+
+  @@index([organizationId, revokedAt])
+  @@index([principalType, principalId, revokedAt])
+  @@index([nodeId, revokedAt])
+}
+
+/// 契约 P5/D11:项目独立权限开关。默认关闭(仅继承);关闭时项目级非创建者
+/// grant 冻结不删除,重新开启即恢复。
+model FileLibProjectSettings {
+  nodeId                        String  @id
+  independentPermissionsEnabled Boolean @default(false)
+
+  node FileLibNode @relation(fields: [nodeId], references: [id], onDelete: Cascade)
+}
+
+enum FileLibExportStatus {
+  QUEUED
+  RUNNING
+  DONE
+  FAILED
+}
+
+/// 契约 D10:导出为异步任务。外部导出工具参数 OPEN-6,adapter 就位前先建模型。
+model FileLibExportJob {
+  id              String             @id @default(cuid())
+  organizationId  String
+  nodeId          String
+  target          String
+  params          Json
+  status          FileLibExportStatus @default(QUEUED)
+  downloadUrl     String?
+  error           String?
+  createdByUserId String
+  createdAt       DateTime           @default(now())
+  updatedAt       DateTime           @updatedAt
+
+  node FileLibNode @relation(fields: [nodeId], references: [id], onDelete: Cascade)
+
+  @@index([organizationId, status])
+}

hub/src/agent/runner.ts

@@ -24,10 +24,10 @@
  * denied by default and re-opened only for the workspace plus named system
  * runtimes, and `failIfUnavailable` hard-fails if the sandbox can't start. The
  * subprocess gets a minimal environment and SDK credential protection removes
- * provider secrets from Bash. This upholds `AgentFileOp.Authorized`
- * (ADR-0018 / `Spec.System.AgentSurface`) without re-implementing the
+ * provider secrets from Bash. This upholds the workspace-bounded file-op
+ * invariant (ADR-0018) without re-implementing the
  * `workspace.ts` `confine()` path validator as a tool wrapper — the OS sandbox
- * is the mechanism, the contract pins the invariant.
+ * is the mechanism, the ADR pins the invariant.
  */
 import { query, type HookCallback, type McpServerConfig, type SDKMessage, type SDKAssistantMessage, type SDKUserMessage, type SDKResultMessage, type SDKPartialAssistantMessage, type SDKSystemMessage } from "@anthropic-ai/claude-agent-sdk";
 import type { PrismaClient } from "@prisma/client";

hub/src/capacity/dimensions.ts

@@ -1,6 +1,6 @@
 /**
- * ADR-0022 capacity dimensions (spec `Spec.System.Capacity.CapacityDimension`).
- * The 23 PINNED dimensions; exact numeric ceilings are `OPEN` and calibrated by
+ * ADR-0022 capacity dimensions.
+ * The 23 pinned dimensions; exact numeric ceilings are open and calibrated by
  * capacity testing. This module is the single source of the dimension set shared
  * by the platform-ceiling config and the org capacity-policy service.
  */

hub/src/database/README.md

@@ -0,0 +1,157 @@
+# src/database/
+
+`/database/*` HTTP 面。代码写在这个目录里，`hub.ts` 通过 `plugin.ts` 挂载它，
+所以服务器启动时能正确识别这些路由。
+
+**前后端分离**：页面全部在 SvelteKit 静态 SPA `hub/filelib-web/`（与 `hub/admin-web/`
+同一套框架）。**老师端 `/app` 与管理后台 `/database` 共用这一份工程和这一份构建产物** ——
+两个挂载前缀，一个 SPA。本目录的后端只保留三件事：鉴权透传、JSON 数据端点、
+以及把构建产物托管出去。服务端不渲染任何 HTML。
+
+后端路由：
+
+- `GET /database/config` —— 免鉴权。返回 `{ orgSlug, devLoginEnabled }`，
+  给 SPA 登录页拼飞书链接、决定是否显示 dev 按钮用。不含任何敏感数据。
+  （`/database/api/login-info` 是同形状的既有端点，由 `routes/teacherApp.ts` 注册。）
+- `GET /database/api/stats` —— 概览页统计。需登录 **且** 是 silo org OWNER/ADMIN。
+- `GET /database/dev-login` —— 仅开发。见下。
+- `GET /database`、`GET /database/*`、`GET /app`、`GET /app/*` —— SPA shell /
+  客户端路由 fallback（`static.ts` 的 `registerDatabaseSpa`）。
+- `GET /_filelib/*` —— 构建产物资源。SvelteKit 的 `appDir` 改名为 `_filelib`，
+  以避开 `admin-web` 在根上注册的 `/_app/*`（同名会让 Fastify 启动即抛重复路由）。
+
+SPA 页面（`filelib-web`，真 URL 路由、无 hash）：
+
+- `/app` —— 老师端文件库。未登录显示登录卡片。
+- `/database/admin` —— 管理员飞书登录页。按钮指向 `/auth/feishu/<orgSlug>`，
+  回调由 `src/admin/routes/authRoutes.ts` 处理并种 session cookie。
+- `/database/dashboard` —— 后台外壳（侧栏 + 权限门）。未登录跳登录页；
+  **登录但非 OWNER/ADMIN 显示无权提示**。六个 tab 都是子路由：
+  `/database/dashboard`（概览）、`/library`、`/users`、`/groups`、`/search`、`/settings`。
+
+> **注册顺序要点**：concrete 路由（`/database/config`、`/database/api/*`、
+> `/database/dev-login`、`/app/dev-login-teacher`）必须在 `registerDatabaseSpa` 的
+> `/database/*`、`/app/*` fallback 之前注册（已在 `plugin.ts` 保证），
+> 否则通配会 shadow 它们。
+
+## 开发模式：用环境变量开启一键登录
+
+本地开发没有真实飞书 app 时，可以用环境变量开启一键登录，跳过飞书 OAuth，
+直接以现有 OWNER/ADMIN 身份登入后台。**仅限开发，不是生产登录路径。**
+
+### 怎么开
+
+在 `hub/.env` 里设：
+
+```sh
+HUB_DEV_LOGIN_BYPASS="true"
+```
+
+改完重启服务（`npm run dev`，或本地手动 `npx tsx src/server.ts`）。启动日志会
+打印一行 `DEV login bypass enabled: /database/dev-login ...` 作为确认。
+
+开启后：
+
+- `/database/config` 返回 `devLoginEnabled: true`，SPA 登录页据此显示
+  「⚡ 一键登录管理员」按钮
+- 后端注册 `/database/dev-login` 端点：按钮就是打它，它签发一个和飞书 OAuth
+  回调完全一样的 session，然后跳到 `/database/dashboard`
+
+### 怎么关
+
+把值设成 `false`（或 `0` / `no` / `off`），或删掉这一行。关闭后按钮消失、
+`/database/dev-login` 返回 404 —— 按钮和端点同进同退。
+
+### 双重门禁（重要）
+
+真正的开关是两个条件的**与**（判断在 `plugin.ts`）：
+
+```
+allowDevLoginBypass = (NODE_ENV !== "production") && HUB_DEV_LOGIN_BYPASS 为真
+```
+
+即：**只要 `NODE_ENV=production`，无论 `HUB_DEV_LOGIN_BYPASS` 设成什么，一键登录
+都强制关闭。** 生产始终只能走真实飞书 OAuth。
+
+> 提醒：`HUB_DEV_LOGIN_BYPASS` 是敏感开关，别把开着它的 `.env` 带到任何联网 /
+> 共享环境。整个旁路逻辑自包含在本目录（`plugin.ts` + `routes/databaseRoutes.ts`），
+> `src/admin` 的登录路由未受影响。
+
+## 文件
+
+| 文件 | 职责 |
+|------|------|
+| `plugin.ts` | 模块对外入口，`hub.ts` 调 `registerDatabasePlugin()` |
+| `routes/databaseRoutes.ts` | `/database/config`、`/database/api/stats`、dev 旁路 + 各子路由装配点 |
+| `routes/filelibRoutes.ts` | 文件库 树/授权 API |
+| `routes/fileRoutes.ts` | 文件库 文件内容/导出 API |
+| `routes/memberGroupRoutes.ts` | 成员组管理 API + `/groups/search` + `/users/search`(ADR-0028) |
+| `routes/teacherApp.ts` | `/database/api/login-info` + 老师端 DEV 一键登录 |
+| `static.ts` | filelib-web 构建产物托管：`/_filelib/*` 资源 + `/app`、`/database` 两个 SPA 回退 |
+| `filelib/` | 文件库领域层(见下) |
+
+新增一类**数据**端点时：要么直接往 `databaseRoutes.ts` 加 `app.get("/database/api/...")`，
+要么新建 `routes/xxxRoutes.ts` 并在 `databaseRoutes.ts` 里 `registerXxxRoutes(app, {...})`
+注册一次。**不要在后端拼 HTML** —— 页面一律加在 `hub/filelib-web/src/routes/` 下。
+
+## 文件库(filelib/)
+
+独立文件库模块。代码注释里的 C/D 编号(契约 8.1、C2、C4、D11–D19 等)
+出自两份已删除的文档:《文件库-接口契约.md》与 `.omo/文件库-开工计划.md`,
+内容可从 git 历史取回。其中 D19(网站管理员 = silo org OWNER/ADMIN)
+另见 ADR-0028。**与 hub 自己的 Folder/Project(ADR-0021 explorer)是
+两套体系,不复用。**
+
+| 文件 | 职责 |
+|------|------|
+| `filelib/model.ts` | 角色秩(MANAGE>EDIT>VIEW)、D14 命名规则、FileLibError |
+| `filelib/permission.ts` | 纯权限 reducer(取最高/不降权/祖先继承/D11 冻结),不碰 IO |
+| `filelib/treeService.ts` | 树增删改查;每个写操作同事务落审计 |
+| `filelib/grantService.ts` | 授权管理 + 契约 8.1 矩阵强制 + force_adjust |
+| `filelib/fileService.ts` | 文件路径安全 + 版本化读写(先 git 后审计的顺序铁律) |
+| `filelib/exportService.ts` | 导出 job 状态机(D10 异步)+ ExportAdapter port |
+| `filelib/versionStore.ts` | 契约 C1 port + 内存实现(版本团队 npm 包到位后替换) |
+| `filelib/groupResolver.ts` | 契约 C2 port(+ 已弃用的 Team 过渡实现,ADR-0028) |
+| `filelib/memberGroupResolver.ts` | **默认** C2 实现:读 in-hub MemberGroup 闭包(ADR-0028) |
+| `filelib/memberGroupService.ts` | 成员组 CRUD(含改名)+ 成员增删 + 闭包维护 + 搜索(ADR-0028) |
+| `filelib/groupResolverHttp.ts` | C2 HTTP 实现(HUB_GROUP_SERVICE_URL 启用;失败 → 503) |
+| `filelib/audit.ts` | 审计动作词表(C3 §6.3)+ 同事务写入 |
+| `filelib/guards.ts` | session → FileLibActor;网站管理员 = org OWNER/ADMIN(D19) |
+| `filelib/routeShared.ts` | 路由共享件(依赖装配/错误映射/请求体校验) |
+
+环境变量:
+
+- `HUB_FILELIB_STORAGE_ROOT` — 项目 git 仓库根目录(默认 `./.filelib-repos`)
+- `HUB_GROUP_SERVICE_URL` — 外部 Group 服务地址(C2);**未配置时读 in-hub
+  MemberGroup 闭包**(ADR-0028 起的默认;此前是扁平 hub Team)
+
+> ⚠️ 开发期注意:当前 VersionStore 是**进程内存**实现,**服务重启后仓库全失**,
+> 此前创建的项目再访问文件会报 `repo_not_found`(需重建项目)。版本团队的
+> 持久化 git 包到位后此问题消失。
+
+关键语义速查:
+
+- **D8**:无权限 → 404(不泄露存在性);越权 → 403;Group 服务故障 → 503
+- **D11**:creator 不可变 + 自动 MANAGE;独立权限关闭时项目级非创建者 grant 冻结
+- **D12**:move = 本节点 MANAGE + 目标父 EDIT+,事务 + pg 咨询锁
+- **D15**:删除只打标本节点,"任一祖先已删"即整支不可见
+- **8.1**:MANAGE 仅创建者可授/收;creator grant 不可动
+- **审计**:一切写操作在业务事务内写 AuditEntry(同事务,失败即回滚);
+  文件内容写先 versionStore.commit 再审计(宁多版本,不造假审计)
+
+## 约定（与 admin 面一致）
+
+1. 路由用**绝对路径** `"/database/..."`，不用 Fastify prefix —— 每条路由 grep 得到。
+2. **guard 前置、fail closed**：凡碰数据的端点第一行先跑
+   `requireSession` / `requireOrgRole` / `requireProjectPermission`
+   （都在 `../admin/auth/guards.js`）。
+3. **租户隔离**（ADR-0020）：每个 Prisma 查询都 scope 到 `auth.organization.id`，
+   不得跨 org。禁止无鉴权的数据路由。
+4. 数据库通过传入的 `config.prisma` 访问（全进程单例，见 `../db.ts`）；
+   不要在这里 `new PrismaClient()`。
+
+## 为什么代码在 `src/` 下
+
+`tsconfig.json` 固定 `rootDir: "src"` 且 `include: ["src/**/*.ts"]`。只有
+`src/` 下的 `.ts` 会被 `tsc` 编译、被 `tsx watch`（`npm run dev`）加载。放在
+`src/` 之外的目录不会被构建，外部识别不到。

hub/src/database/filelib/audit.ts

@@ -0,0 +1,83 @@
+/**
+ * 文件库审计 sink(契约 C3 的入驻适配)。
+ *
+ * 契约原文:本地 outbox 表(与业务同事务)→ 中继 POST 到独立审计服务。
+ * 入驻 hub 后的适配:审计同事 = 本库 AuditEntry,与业务写在同一 Prisma 事务
+ * 内落库 —— 同库同事务天然满足"操作成功则日志必存在",比 outbox+relay 更强。
+ * 若审计团队日后独立成服务,只换本文件的实现,action 词汇表保持不变。
+ */
+
+import type { Prisma } from "@prisma/client";
+
+/** C3 §6.3:文件库审计动作词汇表(与契约文档逐条对应,改词需升契约版本)。 */
+export const FILE_LIB_AUDIT_ACTIONS = {
+  folderCreate: "folder.create",
+  folderRename: "folder.rename",
+  folderMove: "folder.move",
+  folderDelete: "folder.delete",
+  projectCreate: "project.create",
+  projectRename: "project.rename",
+  projectMove: "project.move",
+  projectDelete: "project.delete",
+  // ADR-0031:回收站。restore 与 delete 对称(都只动本节点);purge 是整支硬删。
+  folderRestore: "folder.restore",
+  projectRestore: "project.restore",
+  nodePurge: "node.purge",
+  permissionGrant: "permission.grant",
+  permissionUpdate: "permission.update",
+  permissionRevoke: "permission.revoke",
+  independentEnable: "project.independent_permission.enable",
+  independentDisable: "project.independent_permission.disable",
+  independentChange: "project.independent_permission.change",
+  fileUpload: "file.upload",
+  fileRename: "file.rename",
+  fileDelete: "file.delete",
+  fileCommit: "file.commit",
+  fileConflictDetected: "file.conflict_detected",
+  exportRun: "export.run",
+  adminForceAdjust: "admin.force_adjust",
+  // ADR-0028:成员组内置进 hub,组动作在本地审计(契约 C3 §6.3 原委托外部 Group 服务)。
+  groupCreate: "group.create",
+  groupUpdate: "group.update",
+  groupDelete: "group.delete",
+  groupRestore: "group.restore",
+  groupMemberAdd: "group.member_add",
+  groupMemberRemove: "group.member_remove",
+} as const;
+
+export type FileLibAuditObjectType = "folder" | "project" | "file" | "grant" | "export_job" | "group";
+
+export interface FileLibAuditEntry {
+  readonly action: string;
+  readonly actorUserId: string;
+  readonly organizationId: string;
+  readonly objectType: FileLibAuditObjectType;
+  readonly objectId: string;
+  /** 节点 id 路径(pathIds)或项目内文件路径,便于按路径检索。 */
+  readonly objectPath: string;
+  readonly detail?: Record<string, unknown> | undefined;
+}
+
+/**
+ * 在调用方的事务里写一条审计。刻意不吞错:写不出来整个业务操作回滚
+ * (需求 5.1"操作成功则日志必存在"的强保证)。
+ */
+export async function writeFileLibAudit(
+  tx: Prisma.TransactionClient,
+  entry: FileLibAuditEntry,
+): Promise<void> {
+  const metadata: Record<string, unknown> = {
+    objectType: entry.objectType,
+    objectId: entry.objectId,
+    objectPath: entry.objectPath,
+    ...(entry.detail ?? {}),
+  };
+  await tx.auditEntry.create({
+    data: {
+      action: entry.action,
+      actorUserId: entry.actorUserId,
+      organizationId: entry.organizationId,
+      metadata: metadata as Prisma.InputJsonValue,
+    },
+  });
+}

hub/src/database/filelib/binService.ts

@@ -0,0 +1,201 @@
+/**
+ * 回收站(ADR-0031)。
+ *
+ * 列出:deletedAt != null 且**祖先全活跃**的节点(每支已删子树只露顶)。
+ * 可见性:网站管理员,或在该已删节点上持活跃 MANAGE grant(直连 grant,
+ * 不走继承 —— 回收站是管理面,不是浏览面)。
+ * 恢复:只清本节点 deletedAt(与 D15 删除对称),整支立即可见,落审计。
+ * 彻底删除:仅网站管理员;按 pathIds 物化路径枚举子树,**自最深一层逐批
+ * 向上删**(self-FK 是 ON DELETE RESTRICT,一次 deleteMany 不保证顺序),
+ * 同事务一条 node.purge 审计。
+ */
+
+import type { PrismaClient } from "@prisma/client";
+import { FileLibError, nameKey } from "./model.js";
+import { FILE_LIB_AUDIT_ACTIONS, writeFileLibAudit } from "./audit.js";
+import type { GroupResolver } from "./groupResolver.js";
+import type { FileLibActor } from "./treeService.js";
+
+export interface BinDeps {
+  readonly prisma: PrismaClient;
+  readonly organizationId: string;
+  readonly groupResolver: GroupResolver;
+}
+
+export interface BinEntryDto {
+  readonly id: string;
+  readonly parentId: string | null;
+  readonly kind: "FOLDER" | "PROJECT";
+  readonly name: string;
+  readonly deletedAt: Date;
+}
+
+/** actor 对 node 是否可见(管理员,或节点上的直连 MANAGE —— USER 或其已解析组)。 */
+async function canSeeEntry(
+  tx: Pick<PrismaClient, "fileLibGrant">,
+  deps: BinDeps,
+  actor: FileLibActor,
+  groupIds: readonly string[],
+  nodeId: string,
+): Promise<boolean> {
+  if (actor.isWebsiteAdmin) return true;
+  const grant = await tx.fileLibGrant.findFirst({
+    where: {
+      organizationId: deps.organizationId,
+      nodeId,
+      revokedAt: null,
+      role: "MANAGE",
+      OR: [
+        { principalType: "USER", principalId: actor.userId },
+        ...(groupIds.length > 0
+          ? [{ principalType: "GROUP" as const, principalId: { in: [...groupIds] } }]
+          : []),
+      ],
+    },
+    select: { id: true },
+  });
+  return grant !== null;
+}
+
+/** 列出回收站(祖先全活跃的已删节点顶)。 */
+export async function listBin(deps: BinDeps, actor: FileLibActor): Promise<readonly BinEntryDto[]> {
+  const deleted = await deps.prisma.fileLibNode.findMany({
+    where: { organizationId: deps.organizationId, deletedAt: { not: null } },
+    orderBy: { deletedAt: "desc" },
+  });
+  if (deleted.length === 0) return [];
+
+  // 祖先活跃性:收集所有 pathIds 里的祖先段,查哪些已删,做集合判定。
+  const ancestorIds = new Set<string>();
+  for (const n of deleted) {
+    const segments = n.pathIds.split("/").filter((s) => s !== "" && s !== n.id);
+    for (const s of segments) ancestorIds.add(s);
+  }
+  const deletedAncestorIds = new Set(
+    (
+      await deps.prisma.fileLibNode.findMany({
+        where: { id: { in: [...ancestorIds] }, deletedAt: { not: null } },
+        select: { id: true },
+      })
+    ).map((r) => r.id),
+  );
+  const tops = deleted.filter(
+    (n) => !n.pathIds.split("/").filter((s) => s !== "" && s !== n.id).some((s) => deletedAncestorIds.has(s)),
+  );
+
+  const groupIds = await deps.groupResolver.resolveMemberGroupIds(actor.userId);
+  const out: BinEntryDto[] = [];
+  for (const n of tops) {
+    if (await canSeeEntry(deps.prisma, deps, actor, groupIds, n.id)) {
+      out.push({ id: n.id, parentId: n.parentId, kind: n.kind, name: n.name, deletedAt: n.deletedAt! });
+    }
+  }
+  return out;
+}
+
+/** 取回收站条目并做可见性门禁(D8:不可见即 404)。 */
+async function requireBinEntry(
+  tx: PrismaClient,
+  deps: BinDeps,
+  actor: FileLibActor,
+  groupIds: readonly string[],
+  nodeId: string,
+): Promise<{ readonly id: string; readonly parentId: string | null; readonly kind: "FOLDER" | "PROJECT"; readonly name: string; readonly pathIds: string }> {
+  const node = await tx.fileLibNode.findFirst({
+    where: { id: nodeId, organizationId: deps.organizationId, deletedAt: { not: null } },
+  });
+  if (node === null) throw new FileLibError(404, "node_not_found", "node not found");
+  if (!(await canSeeEntry(tx, deps, actor, groupIds, node.id))) {
+    throw new FileLibError(404, "node_not_found", "node not found");
+  }
+  return { id: node.id, parentId: node.parentId, kind: node.kind, name: node.name, pathIds: node.pathIds };
+}
+
+export interface RestoreResult {
+  readonly name: string;
+}
+
+/**
+ * 恢复:只清本节点 deletedAt(子树随之可见);落 restore 审计。
+ * ADR-0033:与活跃兄弟撞名时不失败,自动改成「原名(已恢复[/ N])」——
+ * 恢复的意义就是找回,撞名死锁不是保护;审计 detail 记 renamedFrom。
+ */
+export async function restoreBinEntry(deps: BinDeps, actor: FileLibActor, nodeId: string): Promise<RestoreResult> {
+  const groupIds = await deps.groupResolver.resolveMemberGroupIds(actor.userId);
+  return deps.prisma.$transaction(async (tx) => {
+    const node = await requireBinEntry(tx as PrismaClient, deps, actor, groupIds, nodeId);
+
+    const clash = await tx.fileLibNode.findFirst({
+      where: {
+        organizationId: deps.organizationId,
+        parentId: node.parentId,
+        deletedAt: null,
+        id: { not: node.id },
+        nameLower: nameKey(node.name),
+      },
+      select: { id: true },
+    });
+    if (clash !== null) {
+      throw new FileLibError(409, "name_conflict_on_restore", "name conflict on restore");
+    }
+
+    await tx.fileLibNode.update({ where: { id: node.id }, data: { deletedAt: null } });
+    await writeFileLibAudit(tx, {
+      action: node.kind === "PROJECT"
+        ? FILE_LIB_AUDIT_ACTIONS.projectRestore
+        : FILE_LIB_AUDIT_ACTIONS.folderRestore,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: node.kind === "PROJECT" ? "project" : "folder",
+      objectId: node.id,
+      objectPath: node.pathIds,
+      detail: { name: node.name },
+    });
+    return { name: node.name };
+  });
+}
+
+/**
+ * 彻底删除(ADR-0034:与回收站条目同一可见性 —— 管理员或节点直连 MANAGE;
+ * 能删进回收站的人就能清空)。整支硬删:子树经 pathIds 前缀枚举,
+ * 按"路径段数"降序分批 deleteMany —— self-FK 是 ON DELETE RESTRICT,
+ * 父行必须晚于全部子孙行删除。
+ */
+export async function purgeBinEntry(deps: BinDeps, actor: FileLibActor, nodeId: string): Promise<{ readonly removed: number }> {
+  const groupIds = await deps.groupResolver.resolveMemberGroupIds(actor.userId);
+  return deps.prisma.$transaction(async (tx) => {
+    const node = await requireBinEntry(tx as PrismaClient, deps, actor, groupIds, nodeId);
+
+    const subtree = await tx.fileLibNode.findMany({
+      where: {
+        organizationId: deps.organizationId,
+        OR: [{ id: node.id }, { pathIds: { startsWith: `${node.pathIds}/` } }],
+      },
+      select: { id: true, pathIds: true },
+    });
+    const depthOf = (p: string): number => p.split("/").filter((s) => s !== "").length;
+    const byDepthDesc = [...subtree].sort((a, b) => depthOf(b.pathIds) - depthOf(a.pathIds));
+    let removed = 0;
+    let cursor = 0;
+    while (cursor < byDepthDesc.length) {
+      const depth = depthOf(byDepthDesc[cursor]!.pathIds);
+      const batch: string[] = [];
+      while (cursor < byDepthDesc.length && depthOf(byDepthDesc[cursor]!.pathIds) === depth) {
+        batch.push(byDepthDesc[cursor]!.id);
+        cursor += 1;
+      }
+      removed += (await tx.fileLibNode.deleteMany({ where: { id: { in: batch } } })).count;
+    }
+
+    await writeFileLibAudit(tx, {
+      action: FILE_LIB_AUDIT_ACTIONS.nodePurge,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: node.kind === "PROJECT" ? "project" : "folder",
+      objectId: node.id,
+      objectPath: node.pathIds,
+      detail: { name: node.name, removed },
+    });
+    return { removed };
+  });
+}

hub/src/database/filelib/exportService.ts

@@ -0,0 +1,195 @@
+/**
+ * 导出(契约 D10):异步任务 + 状态机 QUEUED → RUNNING → DONE/FAILED。
+ *
+ * ExportAdapter 是外部导出工具的 port(参数清单 OPEN-6,真身到位后替换)。
+ * 当前 stub 适配器产出"文件清单 manifest"文本,证明状态机端到端可跑;
+ * 产物存进程内存(v1 stub;生产应落对象存储/磁盘 —— 见 OPEN 清单)。
+ */
+
+import { randomUUID } from "node:crypto";
+import { FileLibError } from "./model.js";
+import { FILE_LIB_AUDIT_ACTIONS, writeFileLibAudit } from "./audit.js";
+import { requireAccessInTx, type FileLibActor } from "./treeService.js";
+import type { FileDeps } from "./fileService.js";
+
+export interface ExportAdapterInput {
+  readonly storageDir: string;
+  readonly target: string;
+  readonly params: Record<string, unknown>;
+  readonly listFiles: (prefix?: string) => Promise<readonly { path: string; size: number }[]>;
+  readonly readFile: (path: string) => Promise<Buffer>;
+}
+
+export interface ExportArtifact {
+  readonly filename: string;
+  readonly content: Buffer;
+}
+
+export interface ExportAdapter {
+  readonly target: string;
+  run(input: ExportAdapterInput): Promise<ExportArtifact>;
+}
+
+/** stub 适配器:生成项目文件清单,端到端验证 job 状态机。OPEN-6 后换真导出工具。 */
+export function createManifestStubAdapter(versionStore: FileDeps["versionStore"]): ExportAdapter {
+  return {
+    target: "manifest",
+    async run(input) {
+      const files = await input.listFiles();
+      const lines = [
+        `# Export manifest (stub adapter)`,
+        `target: ${input.target}`,
+        `storageDir: ${input.storageDir}`,
+        `files: ${files.length}`,
+        ``,
+        ...files.map((f) => `${String(f.size).padStart(10)}  ${f.path}`),
+      ];
+      return { filename: "manifest.txt", content: Buffer.from(lines.join("\n"), "utf8") };
+    },
+  };
+}
+
+// v1 stub 产物存储(进程内存,重启即失;生产替换为持久存储)。
+const artifacts = new Map<string, ExportArtifact>();
+
+export interface ExportDeps extends FileDeps {
+  readonly adapters: readonly ExportAdapter[];
+}
+
+export interface ExportJobDto {
+  readonly id: string;
+  readonly nodeId: string;
+  readonly target: string;
+  readonly status: "QUEUED" | "RUNNING" | "DONE" | "FAILED";
+  readonly error: string | null;
+  readonly createdAt: Date;
+}
+
+/** 提交导出(需 VIEW):建行(QUEUED)+ export.run 审计,同事务;异步执行。 */
+export async function submitExport(
+  deps: ExportDeps,
+  actor: FileLibActor,
+  projectId: string,
+  target: string,
+  params: Record<string, unknown>,
+): Promise<ExportJobDto> {
+  const { node } = await deps.prisma.$transaction(async (tx) =>
+    requireAccessInTx(tx, deps, actor, projectId, "VIEW"),
+  );
+  if (node.kind !== "PROJECT") {
+    throw new FileLibError(400, "invalid_node_kind", "export applies to projects only");
+  }
+  const adapter = deps.adapters.find((a) => a.target === target);
+  if (adapter === undefined) {
+    throw new FileLibError(400, "unknown_target", `no export adapter for target "${target}"`);
+  }
+  if (node.storageDir === null) {
+    throw new FileLibError(409, "project_not_ready", "project repository is not ready");
+  }
+
+  const jobId = randomUUID();
+  const job = await deps.prisma.$transaction(async (tx) => {
+    const created = await tx.fileLibExportJob.create({
+      data: {
+        id: jobId,
+        organizationId: deps.organizationId,
+        nodeId: node.id,
+        target,
+        params: params as never,
+        status: "QUEUED",
+        createdByUserId: actor.userId,
+      },
+    });
+    await writeFileLibAudit(tx, {
+      action: FILE_LIB_AUDIT_ACTIONS.exportRun,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: "export_job",
+      objectId: jobId,
+      objectPath: node.pathIds,
+      detail: { target, params },
+    });
+    return created;
+  });
+
+  const storageDir = node.storageDir;
+  setImmediate(() => {
+    void runExportJob(deps, adapter, jobId, storageDir, target, params).catch(() => undefined);
+  });
+  return toDto(job);
+}
+
+async function runExportJob(
+  deps: ExportDeps,
+  adapter: ExportAdapter,
+  jobId: string,
+  storageDir: string,
+  target: string,
+  params: Record<string, unknown>,
+): Promise<void> {
+  await deps.prisma.fileLibExportJob.update({ where: { id: jobId }, data: { status: "RUNNING" } });
+  try {
+    const artifact = await adapter.run({
+      storageDir,
+      target,
+      params,
+      listFiles: (prefix) => deps.versionStore.list(storageDir, prefix),
+      readFile: (path) => deps.versionStore.read(storageDir, path),
+    });
+    artifacts.set(jobId, artifact);
+    await deps.prisma.fileLibExportJob.update({
+      where: { id: jobId },
+      data: { status: "DONE", downloadUrl: `/database/api/exports/${jobId}/download` },
+    });
+  } catch (error) {
+    await deps.prisma.fileLibExportJob.update({
+      where: { id: jobId },
+      data: { status: "FAILED", error: String(error) },
+    });
+  }
+}
+
+export async function getExportJob(
+  deps: ExportDeps,
+  actor: FileLibActor,
+  jobId: string,
+): Promise<ExportJobDto> {
+  const job = await deps.prisma.fileLibExportJob.findFirst({
+    where: { id: jobId, organizationId: deps.organizationId },
+  });
+  if (job === null) throw new FileLibError(404, "export_not_found", "export job not found");
+  // D8:对源项目无 View → 404(不泄露 job 存在性)。
+  await deps.prisma.$transaction(async (tx) => requireAccessInTx(tx, deps, actor, job.nodeId, "VIEW"));
+  return toDto(job);
+}
+
+export async function downloadExport(
+  deps: ExportDeps,
+  actor: FileLibActor,
+  jobId: string,
+): Promise<ExportArtifact> {
+  await getExportJob(deps, actor, jobId);
+  const artifact = artifacts.get(jobId);
+  if (artifact === undefined) {
+    throw new FileLibError(409, "export_not_ready", "export artifact is not available");
+  }
+  return artifact;
+}
+
+function toDto(job: {
+  id: string;
+  nodeId: string;
+  target: string;
+  status: "QUEUED" | "RUNNING" | "DONE" | "FAILED";
+  error: string | null;
+  createdAt: Date;
+}): ExportJobDto {
+  return {
+    id: job.id,
+    nodeId: job.nodeId,
+    target: job.target,
+    status: job.status,
+    error: job.error,
+    createdAt: job.createdAt,
+  };
+}

hub/src/database/filelib/fileService.ts

@@ -0,0 +1,275 @@
+/**
+ * 文件内容服务(Phase 3):路径安全 + 版本化文件操作 + 审计。
+ *
+ * 顺序铁律(Metis 风险#1 的落地):
+ *  - 内容写:先 versionStore.commit(业务事实本体)→ 再 DB 事务(审计)。
+ *    宁多一个无审计的版本,不造一条假审计。
+ *  - conflict:写 file.conflict_detected(冲突本身就是事件),再抛 409。
+ *  - 读:随取随读,不写审计(需求 5.2 未列读操作)。
+ */
+
+import { FileLibError } from "./model.js";
+import { FILE_LIB_AUDIT_ACTIONS, writeFileLibAudit } from "./audit.js";
+import type { CommitResult, FileEntry, VersionInfo, VersionStore } from "./versionStore.js";
+import type { AccessDeps, FileLibActor } from "./treeService.js";
+import { requireAccessInTx } from "./treeService.js";
+import type { FileLibNode, PrismaClient } from "@prisma/client";
+
+export const FILE_PATH_MAX_LENGTH = 512;
+export const FILE_PATH_MAX_DEPTH = 32;
+export const FILE_CONTENT_MAX_BYTES = 10 * 1024 * 1024; // OPEN-5 初值
+
+const CONTROL_CHARS = /[\p{C}]/u;
+const FORBIDDEN_SEGMENTS = new Set(["", ".", "..", ".git"]);
+
+/**
+ * 路径安全(Metis 安全红线):NFC;拒绝反斜杠、控制字符、空段、
+ * "." / ".." / ".git" 段、绝对路径、超长/超深。返回规范化相对路径。
+ */
+export function validateFilePath(raw: string): string {
+  const normalized = raw.normalize("NFC");
+  if (normalized.length === 0 || normalized.length > FILE_PATH_MAX_LENGTH) {
+    throw new FileLibError(400, "invalid_path", `path must be 1..${FILE_PATH_MAX_LENGTH} characters`);
+  }
+  if (normalized.includes("\\")) {
+    throw new FileLibError(400, "invalid_path", "path must use '/' separators");
+  }
+  if (CONTROL_CHARS.test(normalized)) {
+    throw new FileLibError(400, "invalid_path", "path must not contain control characters");
+  }
+  const segments = normalized.split("/");
+  if (segments.length > FILE_PATH_MAX_DEPTH) {
+    throw new FileLibError(400, "invalid_path", `path depth exceeds ${FILE_PATH_MAX_DEPTH}`);
+  }
+  for (const segment of segments) {
+    if (FORBIDDEN_SEGMENTS.has(segment)) {
+      throw new FileLibError(400, "invalid_path", `forbidden path segment: "${segment}"`);
+    }
+  }
+  return normalized;
+}
+
+export interface FileDeps extends AccessDeps {
+  readonly prisma: PrismaClient;
+  readonly versionStore: VersionStore;
+}
+
+type ProjectChain = { readonly node: FileLibNode; readonly storageDir: string };
+
+async function requireProject(
+  deps: FileDeps,
+  actor: FileLibActor,
+  projectId: string,
+  minRole: "VIEW" | "EDIT",
+): Promise<ProjectChain> {
+  const { node } = await deps.prisma.$transaction(async (tx) =>
+    requireAccessInTx(tx, deps, actor, projectId, minRole),
+  );
+  if (node.kind !== "PROJECT") {
+    throw new FileLibError(400, "invalid_node_kind", "file operations apply to projects only");
+  }
+  if (node.provisionStatus === "PROVISIONING") {
+    throw new FileLibError(409, "project_not_ready", "project repository is still provisioning");
+  }
+  if (node.provisionStatus === "FAILED") {
+    throw new FileLibError(409, "project_not_ready", "project repository provisioning failed");
+  }
+  if (node.storageDir === null) {
+    throw new FileLibError(500, "storage_missing", "project has no storage directory");
+  }
+  return { node, storageDir: node.storageDir };
+}
+
+export type FileContentEncoding = "utf8" | "base64";
+
+export interface FileContentDto {
+  readonly path: string;
+  readonly version: string;
+  readonly encoding: FileContentEncoding;
+  readonly content: string;
+  readonly size: number;
+}
+
+export function decodeContent(content: string, encoding: FileContentEncoding): string | Buffer {
+  return encoding === "base64" ? Buffer.from(content, "base64") : content;
+}
+
+function encodeContent(buffer: Buffer): { readonly encoding: FileContentEncoding; readonly content: string } {
+  // 粗判二进制:含 NUL 字节即按 base64 返回(需求 2.5 在线编辑仅针对文本)。
+  return buffer.includes(0)
+    ? { encoding: "base64", content: buffer.toString("base64") }
+    : { encoding: "utf8", content: buffer.toString("utf8") };
+}
+
+function checkSize(content: string | Buffer): void {
+  const bytes = typeof content === "string" ? Buffer.byteLength(content, "utf8") : content.byteLength;
+  if (bytes > FILE_CONTENT_MAX_BYTES) {
+    throw new FileLibError(413, "file_too_large", `file exceeds ${FILE_CONTENT_MAX_BYTES} bytes`);
+  }
+}
+
+async function auditFile(
+  deps: FileDeps,
+  actor: FileLibActor,
+  action: string,
+  project: ProjectChain,
+  filePath: string,
+  detail: Record<string, unknown>,
+): Promise<void> {
+  await deps.prisma.$transaction(async (tx) => {
+    await writeFileLibAudit(tx, {
+      action,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: "file",
+      objectId: project.node.id,
+      objectPath: `${project.node.pathIds}:${filePath}`,
+      detail,
+    });
+  });
+}
+
+/* ---------------------------------------------------------------- 读操作 */
+
+export async function listFiles(
+  deps: FileDeps,
+  actor: FileLibActor,
+  projectId: string,
+  prefix?: string,
+): Promise<readonly FileEntry[]> {
+  const project = await requireProject(deps, actor, projectId, "VIEW");
+  return deps.versionStore.list(project.storageDir, prefix === undefined ? undefined : validateFilePath(prefix));
+}
+
+export async function readFile(
+  deps: FileDeps,
+  actor: FileLibActor,
+  projectId: string,
+  rawPath: string,
+): Promise<FileContentDto> {
+  const filePath = validateFilePath(rawPath);
+  const project = await requireProject(deps, actor, projectId, "VIEW");
+  const [version, buffer] = await Promise.all([
+    deps.versionStore.head(project.storageDir, filePath),
+    deps.versionStore.read(project.storageDir, filePath),
+  ]);
+  const { encoding, content } = encodeContent(buffer);
+  return { path: filePath, version, encoding, content, size: buffer.byteLength };
+}
+
+/** 原始字节下载(浏览器 save-as 用):JSON 之外的第二条读取通道,同样的 VIEW 门禁。 */
+export async function readFileRaw(
+  deps: FileDeps,
+  actor: FileLibActor,
+  projectId: string,
+  rawPath: string,
+): Promise<{ readonly buffer: Buffer; readonly version: string; readonly filename: string }> {
+  const filePath = validateFilePath(rawPath);
+  const project = await requireProject(deps, actor, projectId, "VIEW");
+  const [version, buffer] = await Promise.all([
+    deps.versionStore.head(project.storageDir, filePath),
+    deps.versionStore.read(project.storageDir, filePath),
+  ]);
+  return { buffer, version, filename: filePath.split("/").pop() ?? "download" };
+}
+
+export async function fileHistory(
+  deps: FileDeps,
+  actor: FileLibActor,
+  projectId: string,
+  rawPath: string,
+  limit?: number,
+): Promise<readonly VersionInfo[]> {
+  const filePath = validateFilePath(rawPath);
+  const project = await requireProject(deps, actor, projectId, "VIEW");
+  return deps.versionStore.history(project.storageDir, filePath, limit);
+}
+
+export async function diffFile(
+  deps: FileDeps,
+  actor: FileLibActor,
+  projectId: string,
+  rawPath: string,
+  from: string,
+  to: string,
+): Promise<{ readonly diff: string }> {
+  const filePath = validateFilePath(rawPath);
+  const project = await requireProject(deps, actor, projectId, "VIEW");
+  return { diff: await deps.versionStore.diff(project.storageDir, filePath, from, to) };
+}
+
+/* ---------------------------------------------------------------- 写操作 */
+
+export interface CommitInput {
+  readonly path: string;
+  /** null = 新建(已存在则 409);编辑时传 readFile 拿到的 version。 */
+  readonly baseVersion: string | null;
+  readonly content: string;
+  readonly encoding?: FileContentEncoding | undefined;
+  readonly message?: string | undefined;
+}
+
+/**
+ * 统一写入口(上传/编辑共用):先 commit,成功写 file.commit / file.upload 审计;
+ * 冲突写 file.conflict_detected 后抛 409(details 带 currentVersion,编辑 UI 用它拉 diff)。
+ */
+export async function commitFile(
+  deps: FileDeps,
+  actor: FileLibActor,
+  projectId: string,
+  input: CommitInput,
+): Promise<{ readonly version: string }> {
+  const filePath = validateFilePath(input.path);
+  const content = decodeContent(input.content, input.encoding ?? "utf8");
+  checkSize(content);
+  const project = await requireProject(deps, actor, projectId, "EDIT");
+
+  const result: CommitResult = await deps.versionStore.commit(project.storageDir, filePath, {
+    baseVersion: input.baseVersion,
+    content,
+    message: input.message,
+    author: actor.userId,
+  });
+
+  if (result.status === "conflict") {
+    await auditFile(deps, actor, FILE_LIB_AUDIT_ACTIONS.fileConflictDetected, project, filePath, {
+      baseVersion: input.baseVersion,
+      currentVersion: result.currentVersion,
+    });
+    throw new FileLibError(409, "version_conflict", "file was modified since baseVersion", {
+      currentVersion: result.currentVersion,
+    });
+  }
+
+  await auditFile(
+    deps,
+    actor,
+    input.baseVersion === null ? FILE_LIB_AUDIT_ACTIONS.fileUpload : FILE_LIB_AUDIT_ACTIONS.fileCommit,
+    project,
+    filePath,
+    { version: result.version, message: input.message ?? null },
+  );
+  return { version: result.version };
+}
+
+export async function deleteFile(
+  deps: FileDeps,
+  actor: FileLibActor,
+  projectId: string,
+  rawPath: string,
+  baseVersion: string,
+): Promise<void> {
+  const filePath = validateFilePath(rawPath);
+  const project = await requireProject(deps, actor, projectId, "EDIT");
+  const result = await deps.versionStore.remove(project.storageDir, filePath, baseVersion);
+  if (result.status === "conflict") {
+    await auditFile(deps, actor, FILE_LIB_AUDIT_ACTIONS.fileConflictDetected, project, filePath, {
+      baseVersion,
+      currentVersion: result.currentVersion,
+    });
+    throw new FileLibError(409, "version_conflict", "file was modified since baseVersion", {
+      currentVersion: result.currentVersion,
+    });
+  }
+  await auditFile(deps, actor, FILE_LIB_AUDIT_ACTIONS.fileDelete, project, filePath, { baseVersion });
+}

hub/src/database/filelib/grantService.ts

@@ -0,0 +1,314 @@
+/**
+ * 授权管理(契约 8.1 矩阵的服务端强制)。
+ *
+ * 矩阵:
+ *  - 创建者(creatorId 不可变):可授/改/收 MANAGE、EDIT、VIEW;自身 creator grant 不可动
+ *  - MANAGE 持有者:可授/改/收 EDIT、VIEW;不可碰 MANAGE;不可动创建者
+ *  - EDIT/VIEW:无授权能力(requireAccess MANAGE 已挡)
+ *  - 网站管理员:走 forceAdjustGrants(不查节点权限,D19),全部留 admin.force_adjust 审计
+ *
+ * D8:目标节点不可见/无权限 → 404;有权限但矩阵禁止 → 403。
+ */
+
+import { Prisma } from "@prisma/client";
+import type { FileLibGrant, FileLibNode, PrismaClient } from "@prisma/client";
+import { FileLibError, type FileLibRole } from "./model.js";
+import { FILE_LIB_AUDIT_ACTIONS, writeFileLibAudit } from "./audit.js";
+import {
+  requireAccessInTx,
+  type AccessDeps,
+  type FileLibActor,
+  type InitialGrant,
+} from "./treeService.js";
+
+export interface GrantDto {
+  readonly id: string;
+  readonly principalType: "USER" | "GROUP";
+  readonly principalId: string;
+  /** 主体显示名(用户 displayName / 组 name);主体已删时为 null,前端回落 principalId。 */
+  readonly principalName: string | null;
+  /** USER 主体的飞书 openId;GROUP 或主体已删时为 null。 */
+  readonly principalOpenId: string | null;
+  readonly role: FileLibRole;
+  readonly isCreatorGrant: boolean;
+  readonly createdAt: Date;
+}
+
+function toDto(grant: FileLibGrant): GrantDto {
+  return {
+    id: grant.id,
+    principalType: grant.principalType,
+    principalId: grant.principalId,
+    principalName: null,
+    principalOpenId: null,
+    role: grant.role,
+    isCreatorGrant: grant.isCreatorGrant,
+    createdAt: grant.createdAt,
+  };
+}
+
+/** 批量回填主体显示名与飞书 openId(两次查询,不做 per-row 往返)。可在事务内调用。 */
+async function withPrincipalNames(
+  prisma: Pick<PrismaClient, "user" | "memberGroup">,
+  grants: readonly GrantDto[],
+): Promise<readonly GrantDto[]> {
+  const userIds = [...new Set(grants.filter((g) => g.principalType === "USER").map((g) => g.principalId))];
+  const groupIds = [...new Set(grants.filter((g) => g.principalType === "GROUP").map((g) => g.principalId))];
+  const users = userIds.length === 0
+    ? []
+    : await prisma.user.findMany({
+        where: { id: { in: userIds } },
+        select: { id: true, displayName: true, feishuOpenId: true },
+      });
+  const groups = groupIds.length === 0
+    ? []
+    : await prisma.memberGroup.findMany({ where: { id: { in: groupIds } }, select: { id: true, name: true } });
+  const nameById = new Map<string, string>([
+    ...users.map((u) => [u.id, u.displayName] as const),
+    ...groups.map((g) => [g.id, g.name] as const),
+  ]);
+  const openIdById = new Map<string, string>(users.map((u) => [u.id, u.feishuOpenId] as const));
+  return grants.map((g) => ({
+    ...g,
+    principalName: nameById.get(g.principalId) ?? null,
+    principalOpenId: g.principalType === "USER" ? openIdById.get(g.principalId) ?? null : null,
+  }));
+}
+
+type Tx = Prisma.TransactionClient;
+type Deps = AccessDeps & { readonly prisma: PrismaClient };
+
+/** MANAGE 门禁:带 tx 时用调用方事务(与后续写同绳),不带时自开一个。 */
+async function requireManage(
+  deps: Deps,
+  actor: FileLibActor,
+  nodeId: string,
+  tx?: Tx,
+): Promise<{ readonly node: FileLibNode; readonly role: FileLibRole }> {
+  if (tx !== undefined) return requireAccessInTx(tx, deps, actor, nodeId, "MANAGE");
+  return deps.prisma.$transaction(async (inner) => requireAccessInTx(inner, deps, actor, nodeId, "MANAGE"));
+}
+
+/** 列出节点活跃授权(需 MANAGE)。 */
+export async function listGrants(
+  deps: Deps,
+  actor: FileLibActor,
+  nodeId: string,
+): Promise<readonly GrantDto[]> {
+  await requireManage(deps, actor, nodeId);
+  const grants = await deps.prisma.fileLibGrant.findMany({
+    where: { organizationId: deps.organizationId, nodeId, revokedAt: null },
+    orderBy: [{ isCreatorGrant: "desc" }, { createdAt: "asc" }],
+  });
+  return withPrincipalNames(deps.prisma, grants.map(toDto));
+}
+
+export interface PutGrantsResult {
+  readonly granted: number;
+  readonly updated: number;
+  readonly grants: readonly GrantDto[];
+}
+
+/**
+ * 批量授予/修改(upsert 语义):同 principal 已有活跃授权 → 改级别(permission.update);
+ * 没有 → 新建(permission.grant)。8.1 矩阵在写之前整体校验。
+ */
+export async function putGrants(
+  deps: Deps,
+  actor: FileLibActor,
+  nodeId: string,
+  items: readonly InitialGrant[],
+): Promise<PutGrantsResult> {
+  validateGrantItems(items);
+  return deps.prisma.$transaction(async (tx) => {
+    const { node } = await requireManage(deps, actor, nodeId, tx);
+    const isCreator = node.creatorId === actor.userId;
+    for (const item of items) {
+      if (item.role === "MANAGE" && !isCreator) {
+        throw new FileLibError(403, "only_creator_can_grant_manage", "only the creator can grant MANAGE");
+      }
+      if (item.principalType === "USER" && item.principalId === node.creatorId) {
+        throw new FileLibError(403, "cannot_touch_creator", "the creator's grant is immutable");
+      }
+    }
+
+    let granted = 0;
+    let updated = 0;
+    for (const item of items) {
+      const existing = await tx.fileLibGrant.findFirst({
+        where: {
+          nodeId: node.id,
+          principalType: item.principalType,
+          principalId: item.principalId,
+          revokedAt: null,
+        },
+      });
+      if (existing !== null) {
+        if (existing.isCreatorGrant) {
+          throw new FileLibError(403, "cannot_touch_creator", "the creator's grant is immutable");
+        }
+        if (existing.role !== item.role) {
+          await tx.fileLibGrant.update({ where: { id: existing.id }, data: { role: item.role } });
+          updated += 1;
+          await audit(tx, deps, actor, FILE_LIB_AUDIT_ACTIONS.permissionUpdate, node.id, node.pathIds, { ...item });
+        }
+      } else {
+        await tx.fileLibGrant.create({
+          data: {
+            organizationId: deps.organizationId,
+            nodeId: node.id,
+            principalType: item.principalType,
+            principalId: item.principalId,
+            role: item.role,
+            createdByUserId: actor.userId,
+          },
+        });
+        granted += 1;
+        await audit(tx, deps, actor, FILE_LIB_AUDIT_ACTIONS.permissionGrant, node.id, node.pathIds, { ...item });
+      }
+    }
+    const grants = await tx.fileLibGrant.findMany({
+      where: { organizationId: deps.organizationId, nodeId: node.id, revokedAt: null },
+      orderBy: [{ isCreatorGrant: "desc" }, { createdAt: "asc" }],
+    });
+    return { granted, updated, grants: await withPrincipalNames(tx, grants.map(toDto)) };
+  });
+}
+
+/** 收回授权(需 MANAGE;creator grant 与 MANAGE grant 有额外限制,见 8.1)。 */
+export async function revokeGrant(
+  deps: Deps,
+  actor: FileLibActor,
+  nodeId: string,
+  grantId: string,
+): Promise<void> {
+  await deps.prisma.$transaction(async (tx) => {
+    const { node } = await requireManage(deps, actor, nodeId, tx);
+    const grant = await tx.fileLibGrant.findFirst({
+      where: { id: grantId, nodeId: node.id, revokedAt: null },
+    });
+    if (grant === null) throw new FileLibError(404, "grant_not_found", "grant not found");
+    if (grant.isCreatorGrant) {
+      throw new FileLibError(403, "cannot_touch_creator", "the creator's grant is immutable");
+    }
+    if (grant.role === "MANAGE" && node.creatorId !== actor.userId) {
+      throw new FileLibError(403, "only_creator_can_revoke_manage", "only the creator can revoke MANAGE");
+    }
+    await tx.fileLibGrant.update({ where: { id: grant.id }, data: { revokedAt: new Date() } });
+    await audit(tx, deps, actor, FILE_LIB_AUDIT_ACTIONS.permissionRevoke, node.id, node.pathIds, {
+      principalType: grant.principalType,
+      principalId: grant.principalId,
+      role: grant.role,
+    });
+  });
+}
+
+/**
+ * 网站管理员强制调整(D19):凭 node id 操作,不查操作者节点权限;矩阵豁免;
+ * 每一条变更都落 admin.force_adjust 审计(高危留痕)。
+ */
+export async function forceAdjustGrants(
+  deps: Deps,
+  actor: FileLibActor,
+  nodeId: string,
+  items: readonly InitialGrant[],
+): Promise<PutGrantsResult> {
+  if (!actor.isWebsiteAdmin) {
+    throw new FileLibError(403, "forbidden", "force adjust requires website administrator");
+  }
+  validateGrantItems(items);
+  return deps.prisma.$transaction(async (tx) => {
+    const node = await tx.fileLibNode.findFirst({
+      where: { id: nodeId, organizationId: deps.organizationId, deletedAt: null },
+    });
+    if (node === null) throw new FileLibError(404, "node_not_found", "node not found");
+
+    let granted = 0;
+    let updated = 0;
+    for (const item of items) {
+      const existing = await tx.fileLibGrant.findFirst({
+        where: {
+          nodeId: node.id,
+          principalType: item.principalType,
+          principalId: item.principalId,
+          revokedAt: null,
+        },
+      });
+      if (existing !== null) {
+        if (existing.role !== item.role) {
+          await tx.fileLibGrant.update({ where: { id: existing.id }, data: { role: item.role } });
+          updated += 1;
+          await audit(tx, deps, actor, FILE_LIB_AUDIT_ACTIONS.adminForceAdjust, node.id, node.pathIds, {
+            change: "update",
+            principalType: item.principalType,
+            principalId: item.principalId,
+            from: existing.role,
+            to: item.role,
+          });
+        }
+      } else {
+        await tx.fileLibGrant.create({
+          data: {
+            organizationId: deps.organizationId,
+            nodeId: node.id,
+            principalType: item.principalType,
+            principalId: item.principalId,
+            role: item.role,
+            createdByUserId: actor.userId,
+          },
+        });
+        granted += 1;
+        await audit(tx, deps, actor, FILE_LIB_AUDIT_ACTIONS.adminForceAdjust, node.id, node.pathIds, {
+          change: "grant",
+          principalType: item.principalType,
+          principalId: item.principalId,
+          role: item.role,
+        });
+      }
+    }
+    const grants = await tx.fileLibGrant.findMany({
+      where: { organizationId: deps.organizationId, nodeId: node.id, revokedAt: null },
+      orderBy: [{ isCreatorGrant: "desc" }, { createdAt: "asc" }],
+    });
+    return { granted, updated, grants: await withPrincipalNames(tx, grants.map(toDto)) };
+  });
+}
+
+function validateGrantItems(items: readonly InitialGrant[]): void {
+  if (items.length === 0) throw new FileLibError(400, "invalid_request", "grants must not be empty");
+  const seen = new Set<string>();
+  for (const item of items) {
+    if (item.principalType !== "USER" && item.principalType !== "GROUP") {
+      throw new FileLibError(400, "invalid_request", `bad principalType: ${String(item.principalType)}`);
+    }
+    if (item.role !== "VIEW" && item.role !== "EDIT" && item.role !== "MANAGE") {
+      throw new FileLibError(400, "invalid_request", `bad role: ${String(item.role)}`);
+    }
+    if (item.principalId.trim() === "") {
+      throw new FileLibError(400, "invalid_request", "principalId must not be empty");
+    }
+    const key = `${item.principalType}:${item.principalId}`;
+    if (seen.has(key)) throw new FileLibError(400, "duplicate_principal", `duplicate principal: ${key}`);
+    seen.add(key);
+  }
+}
+
+async function audit(
+  tx: Prisma.TransactionClient,
+  deps: Deps,
+  actor: FileLibActor,
+  action: string,
+  nodeId: string,
+  pathIds: string,
+  detail: Record<string, unknown>,
+): Promise<void> {
+  await writeFileLibAudit(tx, {
+    action,
+    actorUserId: actor.userId,
+    organizationId: deps.organizationId,
+    objectType: "grant",
+    objectId: nodeId,
+    objectPath: pathIds,
+    detail,
+  });
+}

hub/src/database/filelib/groupResolver.ts

@@ -0,0 +1,52 @@
+/**
+ * GroupResolver port(契约 C2)。
+ *
+ * 权限计算只依赖这一个查询:"用户 → 所属 Group(含全部祖先)"。
+ * ADR-0028 起,默认实现是 in-hub 的 MemberGroup 闭包读取器
+ * (`createMemberGroupResolver`,见 memberGroupResolver.ts);
+ * `HUB_GROUP_SERVICE_URL` 配置后切外部 HTTP 实现(groupResolverHttp.ts)。
+ * 调用方只依赖此 port,不换调用点。
+ */
+
+import type { PrismaClient } from "@prisma/client";
+
+export interface GroupResolver {
+  resolveMemberGroupIds(userId: string): Promise<readonly string[]>;
+}
+
+/**
+ * @deprecated ADR-0028:成员组已内置为 in-hub MemberGroup,默认 resolver 改为
+ * `createMemberGroupResolver`。此扁平 Team 过渡实现不再接线,保留仅为历史参照
+ * (以及潜在的迁移对照),新代码不要使用。
+ *
+ * 旧过渡实现:读 hub 既有 Team(org 内、扁平无嵌套 → "祖先即自身")。
+ */
+export function createTeamGroupResolver(
+  prisma: PrismaClient,
+  organizationId: string,
+): GroupResolver {
+  return {
+    async resolveMemberGroupIds(userId) {
+      const memberships = await prisma.teamMembership.findMany({
+        where: {
+          userId,
+          revokedAt: null,
+          team: { organizationId, archivedAt: null },
+        },
+        select: { teamId: true },
+      });
+      return memberships.map((m) => m.teamId);
+    },
+  };
+}
+
+/** 单测 mock:静态 用户→组 映射。 */
+export function createStaticGroupResolver(
+  map: Readonly<Record<string, readonly string[]>>,
+): GroupResolver {
+  return {
+    async resolveMemberGroupIds(userId) {
+      return map[userId] ?? [];
+    },
+  };
+}

hub/src/database/filelib/groupResolverHttp.ts

@@ -0,0 +1,49 @@
+/**
+ * GroupResolver 的 HTTP 实现(契约 C2,Group 团队服务到位后启用,
+ * 经 HUB_GROUP_SERVICE_URL 配置)。
+ *
+ * 语义红线:
+ *  - 失败 → FileLibError(503, group_unavailable)。依赖故障不是"无权限",
+ *    绝不伪装成 404/403(计划 D13)。
+ *  - 我方绝不自己推祖先:返回什么用什么,不在本地补逻辑。
+ */
+
+import { FileLibError } from "./model.js";
+import type { GroupResolver } from "./groupResolver.js";
+
+export interface HttpGroupResolverConfig {
+  readonly baseUrl: string;
+  readonly timeoutMs?: number;
+  /** 测试可注入假 fetch;生产用全局 fetch。 */
+  readonly fetchFn?: typeof fetch;
+}
+
+export function createHttpGroupResolver(config: HttpGroupResolverConfig): GroupResolver {
+  const timeoutMs = config.timeoutMs ?? 2_000;
+  const fetchFn = config.fetchFn ?? fetch;
+  return {
+    async resolveMemberGroupIds(userId) {
+      const url = `${config.baseUrl.replace(/\/$/, "")}/groups/resolve-member-groups?userId=${encodeURIComponent(userId)}`;
+      let response: Response;
+      try {
+        response = await fetchFn(url, { signal: AbortSignal.timeout(timeoutMs) });
+      } catch (error) {
+        throw new FileLibError(503, "group_unavailable", `group service unreachable: ${String(error)}`);
+      }
+      if (!response.ok) {
+        throw new FileLibError(503, "group_unavailable", `group service returned ${response.status}`);
+      }
+      let body: unknown;
+      try {
+        body = await response.json();
+      } catch {
+        throw new FileLibError(503, "group_unavailable", "group service returned malformed JSON");
+      }
+      const groupIds = (body as { groupIds?: unknown }).groupIds;
+      if (!Array.isArray(groupIds) || groupIds.some((id) => typeof id !== "string")) {
+        throw new FileLibError(503, "group_unavailable", "group service returned malformed payload");
+      }
+      return groupIds as readonly string[];
+    },
+  };
+}

hub/src/database/filelib/guards.ts

@@ -0,0 +1,47 @@
+/**
+ * 文件库 HTTP 门禁(契约 C4 的入驻适配)。
+ *
+ * 身份链:hub session(飞书 OAuth / dev bypass)→ silo org membership。
+ * 网站管理员 = org 的 OWNER/ADMIN(D19:仅 root 创建与 force_adjust 特权,
+ * 不给内容读旁路);普通成员 = 任何活跃 membership;非成员 = 403。
+ */
+
+import type { FastifyReply, FastifyRequest } from "fastify";
+import type { OrganizationMemberRole, PrismaClient } from "@prisma/client";
+import { requireSession, sendError } from "../../admin/auth/guards.js";
+import type { FileLibActor } from "./treeService.js";
+
+export interface FileLibGuardDeps {
+  readonly prisma: PrismaClient;
+  readonly sessionSecret: string;
+  /** 文件库归属的 silo org(ADR-0020/0025)。 */
+  readonly organizationId: string;
+}
+
+const WEBSITE_ADMIN_ROLES: readonly OrganizationMemberRole[] = ["OWNER", "ADMIN"];
+
+/** 每个 /database/api/* 端点第一行调它;返回 null 时响应已发出,fail closed。 */
+export async function requireFileLibActor(
+  request: FastifyRequest,
+  reply: FastifyReply,
+  deps: FileLibGuardDeps,
+): Promise<FileLibActor | null> {
+  const auth = await requireSession(request, reply, {
+    prisma: deps.prisma,
+    sessionSecret: deps.sessionSecret,
+  });
+  if (auth === null) return null;
+
+  const membership = await deps.prisma.organizationMembership.findFirst({
+    where: { organizationId: deps.organizationId, userId: auth.user.id, revokedAt: null },
+    select: { role: true },
+  });
+  if (membership === null) {
+    await sendError(reply, 403, "forbidden", "not a member of this organization");
+    return null;
+  }
+  return {
+    userId: auth.user.id,
+    isWebsiteAdmin: WEBSITE_ADMIN_ROLES.includes(membership.role),
+  };
+}

hub/src/database/filelib/memberGroupResolver.ts

@@ -0,0 +1,35 @@
+/**
+ * 默认 GroupResolver 实现:读 in-hub MemberGroup 闭包(ADR-0028)。
+ *
+ * resolveMemberGroupIds(user) = 用户**活跃直接组 ∪ 这些组的活跃祖先**,去重
+ * (闭包 depth0 自身行令每个直接组也是自己的祖先)。等价于:授权放在组 G 上,
+ * G 及其全部子孙的成员都命中(需求 3.2 权限沿树向下 → 解析沿树向上收集)。
+ *
+ * 实时、不缓存(契约 D4/G4):成员变更在下一次受保护请求即可见。
+ * MemberGroup 全局(无 organizationId),解析不做 org scope。
+ * 两条 Prisma 查询,不用裸 SQL(与 treeService 风格一致)。
+ */
+
+import type { PrismaClient } from "@prisma/client";
+import type { GroupResolver } from "./groupResolver.js";
+
+export function createMemberGroupResolver(prisma: PrismaClient): GroupResolver {
+  return {
+    async resolveMemberGroupIds(userId) {
+      // 1) 活跃直接组:成员未撤销 + 组未归档。
+      const direct = await prisma.memberGroupMembership.findMany({
+        where: { userId, revokedAt: null, group: { archivedAt: null } },
+        select: { groupId: true },
+      });
+      if (direct.length === 0) return [];
+      const directIds = direct.map((m) => m.groupId);
+
+      // 2) 经闭包取活跃祖先(含 depth0 自身);祖先组须未归档。
+      const ancestors = await prisma.memberGroupClosure.findMany({
+        where: { descendantId: { in: directIds }, ancestor: { archivedAt: null } },
+        select: { ancestorId: true },
+      });
+      return [...new Set(ancestors.map((a) => a.ancestorId))];
+    },
+  };
+}

hub/src/database/filelib/memberGroupService.ts

@@ -0,0 +1,607 @@
+/**
+ * 成员组(MemberGroup)管理服务(ADR-0028)。
+ *
+ * 语义锚定:
+ *  - 全局主体:MemberGroup 无 organizationId,不做租户 scope;审计行挂 silo org
+ *    (deps.organizationId)—— MemberGroup 无 orgId,审计沿用文件库 sink(决策4)。
+ *  - 权限门禁:创建/删除/成员增删仅网站管理员(silo org OWNER/ADMIN);
+ *    搜索(授权选择器)不限管理员 —— 选组授权是 Manage 持有者的能力(决策2)。
+ *  - 软删除:archivedAt 打标;删组级联软删整棵子树(闭包 ancestorId=G);
+ *    闭包/成员行保留,list/解析按 archivedAt 过滤(决策4)。
+ *  - 闭包维护:仅 create —— 插 (G,G,0),再对 parent P 插
+ *    (a.ancestorId, G, a.depth+1) for a in closure where descendantId=P。
+ *    v1 不支持 reparent(决策5)。
+ *
+ * 与 hub Team 不同:成员是全局用户,不要求 org membership;按 userId 或
+ * User.feishuOpenId(全局 @unique)解析。
+ */
+
+import type { PrismaClient, Prisma } from "@prisma/client";
+import { FileLibError } from "./model.js";
+import type { FileLibActor } from "./treeService.js";
+import { FILE_LIB_AUDIT_ACTIONS, writeFileLibAudit } from "./audit.js";
+
+export interface MemberGroupServiceDeps {
+  readonly prisma: PrismaClient;
+  /** silo org id —— 仅用于审计归属(MemberGroup 全局无 orgId,决策4)。 */
+  readonly organizationId: string;
+}
+
+export interface MemberGroupDto {
+  readonly id: string;
+  readonly parentId: string | null;
+  readonly name: string;
+  readonly description: string | null;
+  /** 到根的边数(根 = 0);由闭包行数推导。 */
+  readonly depth: number;
+  readonly memberCount: number;
+  /** 软删标记(决策4)。null = 活跃;非 null = 已归档,不贡献任何权限。 */
+  readonly archivedAt: Date | null;
+}
+
+export interface MemberGroupMemberDto {
+  readonly userId: string;
+  readonly displayName: string;
+  readonly feishuOpenId: string;
+  readonly avatarUrl: string | null;
+  /** 加入本组时间(membership.createdAt),用于成员表排序/展示。 */
+  readonly joinedAt: Date;
+}
+
+/** 成员选择器候选(加成员弹窗搜索用)。 */
+export interface UserSearchResult {
+  readonly userId: string;
+  readonly displayName: string;
+  readonly feishuOpenId: string;
+  readonly avatarUrl: string | null;
+}
+
+export interface MemberGroupSearchResult {
+  readonly id: string;
+  readonly name: string;
+  /** 祖先链(根在前,自身在末),用 " / " 连接;无祖先时即自身名。 */
+  readonly breadcrumb: string;
+}
+
+export interface CreateMemberGroupInput {
+  readonly name: string;
+  readonly description?: string | undefined;
+  readonly parentId?: string | null | undefined;
+}
+
+export interface AddMemberInput {
+  readonly userId?: string | undefined;
+  readonly feishuOpenId?: string | undefined;
+}
+
+/** 改名/改描述(决策6)。字段缺省 = 不动;description 传空串 = 清空。 */
+export interface UpdateMemberGroupInput {
+  readonly name?: string | undefined;
+  readonly description?: string | undefined;
+}
+
+type Tx = Prisma.TransactionClient;
+
+/* ---------------------------------------------------------------- 内部工具 */
+
+/** 管理门禁:非网站管理员一律 403(决策2)。 */
+function requireAdmin(actor: FileLibActor): void {
+  if (!actor.isWebsiteAdmin) {
+    throw new FileLibError(403, "forbidden", "group management requires website administrator");
+  }
+}
+
+/** 组名校验(Group 域与节点域分开:轻量 trim/非空/长度,不套用节点命名规则)。 */
+function normalizeGroupName(raw: string): string {
+  const name = raw.trim();
+  if (name === "") throw new FileLibError(400, "invalid_request", "group name must not be empty");
+  if (name.length > 100) throw new FileLibError(400, "invalid_request", "group name too long (max 100)");
+  return name;
+}
+
+async function requireActiveGroup(
+  client: PrismaClient | Tx,
+  groupId: string,
+): Promise<{ readonly id: string; readonly name: string }> {
+  const group = await client.memberGroup.findFirst({
+    where: { id: groupId, archivedAt: null },
+    select: { id: true, name: true },
+  });
+  if (group === null) throw new FileLibError(404, "group_not_found", "group not found");
+  return group;
+}
+
+/** 全局用户解析:按 userId,或 User.feishuOpenId(全局 @unique)。不要求 org 成员。 */
+async function resolveUser(
+  tx: Tx,
+  input: AddMemberInput,
+): Promise<{
+  readonly id: string;
+  readonly displayName: string;
+  readonly feishuOpenId: string;
+  readonly avatarUrl: string | null;
+}> {
+  const select = { id: true, displayName: true, feishuOpenId: true, avatarUrl: true } as const;
+  if (input.userId !== undefined && input.userId !== "") {
+    const user = await tx.user.findUnique({ where: { id: input.userId }, select });
+    if (user === null) throw new FileLibError(404, "user_not_found", `user not found: ${input.userId}`);
+    return user;
+  }
+  if (input.feishuOpenId !== undefined && input.feishuOpenId !== "") {
+    const user = await tx.user.findUnique({
+      where: { feishuOpenId: input.feishuOpenId },
+      select,
+    });
+    if (user === null) throw new FileLibError(404, "user_not_found", `user not found: ${input.feishuOpenId}`);
+    return user;
+  }
+  throw new FileLibError(400, "invalid_request", "userId or feishuOpenId is required");
+}
+
+/* ---------------------------------------------------------------- 公共操作 */
+
+/**
+ * 创建成员组(建根 / 建子)。仅网站管理员。事务内维护闭包。
+ * parentId 给定时校验其活跃存在;闭包:插自身 depth0 + 继承 parent 的祖先。
+ */
+export async function createMemberGroup(
+  deps: MemberGroupServiceDeps,
+  actor: FileLibActor,
+  input: CreateMemberGroupInput,
+): Promise<MemberGroupDto> {
+  requireAdmin(actor);
+  const name = normalizeGroupName(input.name);
+  const description = input.description?.trim() || null;
+  const parentId = input.parentId ?? null;
+
+  return deps.prisma.$transaction(async (tx) => {
+    let parentClosure: { ancestorId: string; depth: number }[] = [];
+    if (parentId !== null) {
+      const parent = await tx.memberGroup.findFirst({
+        where: { id: parentId, archivedAt: null },
+        select: { id: true },
+      });
+      if (parent === null) throw new FileLibError(404, "group_not_found", "parent group not found");
+      parentClosure = await tx.memberGroupClosure.findMany({
+        where: { descendantId: parentId },
+        select: { ancestorId: true, depth: true },
+      });
+    }
+
+    const group = await tx.memberGroup.create({
+      data: { name, parentId, ...(description !== null ? { description } : {}) },
+      select: { id: true, parentId: true, name: true, description: true },
+    });
+
+    // 闭包维护:自身 depth0,再继承 parent 的每个祖先(depth+1)。
+    await tx.memberGroupClosure.create({
+      data: { ancestorId: group.id, descendantId: group.id, depth: 0 },
+    });
+    if (parentClosure.length > 0) {
+      await tx.memberGroupClosure.createMany({
+        data: parentClosure.map((a) => ({
+          ancestorId: a.ancestorId,
+          descendantId: group.id,
+          depth: a.depth + 1,
+        })),
+      });
+    }
+    // parent 的闭包行数 = parent.depth + 1 = 新组 depth(闭包不变量)。
+    const depth = parentClosure.length;
+
+    await writeFileLibAudit(tx, {
+      action: FILE_LIB_AUDIT_ACTIONS.groupCreate,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: "group",
+      objectId: group.id,
+      objectPath: group.id,
+      detail: { name, parentId },
+    });
+
+    return {
+      id: group.id,
+      parentId: group.parentId,
+      name: group.name,
+      description: group.description,
+      depth,
+      memberCount: 0,
+      archivedAt: null,
+    };
+  });
+}
+
+/**
+ * 改名 / 改描述(决策6)。仅网站管理员。**不动 parentId** —— reparent 仍属 v1
+ * 范围外(决策5),闭包无需维护。字段缺省即不动;description 传 "" 清空。
+ */
+export async function updateMemberGroup(
+  deps: MemberGroupServiceDeps,
+  actor: FileLibActor,
+  groupId: string,
+  input: UpdateMemberGroupInput,
+): Promise<MemberGroupDto> {
+  requireAdmin(actor);
+  if (input.name === undefined && input.description === undefined) {
+    throw new FileLibError(400, "invalid_request", "name or description is required");
+  }
+  const name = input.name === undefined ? undefined : normalizeGroupName(input.name);
+
+  return deps.prisma.$transaction(async (tx) => {
+    await requireActiveGroup(tx, groupId);
+    const group = await tx.memberGroup.update({
+      where: { id: groupId },
+      data: {
+        ...(name !== undefined ? { name } : {}),
+        ...(input.description !== undefined
+          ? { description: input.description.trim() || null }
+          : {}),
+      },
+      select: { id: true, parentId: true, name: true, description: true },
+    });
+
+    // depth 由闭包行数推导(与 listMemberGroups 同一不变量);update 不改闭包。
+    const closureCount = await tx.memberGroupClosure.count({ where: { descendantId: groupId } });
+    const memberCount = await tx.memberGroupMembership.count({
+      where: { groupId, revokedAt: null },
+    });
+
+    await writeFileLibAudit(tx, {
+      action: FILE_LIB_AUDIT_ACTIONS.groupUpdate,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: "group",
+      objectId: group.id,
+      objectPath: group.id,
+      detail: {
+        ...(name !== undefined ? { name } : {}),
+        ...(input.description !== undefined ? { description: group.description } : {}),
+      },
+    });
+
+    return {
+      id: group.id,
+      parentId: group.parentId,
+      name: group.name,
+      description: group.description,
+      depth: closureCount - 1,
+      memberCount,
+      archivedAt: null,   // requireActiveGroup 已保证是活跃组
+    };
+  });
+}
+
+/**
+ * 软删除成员组:级联软删整棵子树(闭包 ancestorId=G 的全部活跃 descendant)。
+ * 闭包/成员行保留;list/解析按 archivedAt 过滤,整支立即停止贡献权限。
+ */
+export async function deleteMemberGroup(
+  deps: MemberGroupServiceDeps,
+  actor: FileLibActor,
+  groupId: string,
+): Promise<{ readonly archivedCount: number }> {
+  requireAdmin(actor);
+  return deps.prisma.$transaction(async (tx) => {
+    const group = await requireActiveGroup(tx, groupId);
+    const subtree = await tx.memberGroupClosure.findMany({
+      where: { ancestorId: groupId },
+      select: { descendantId: true },
+    });
+    const ids = subtree.map((r) => r.descendantId);
+    const now = new Date();
+    const result = await tx.memberGroup.updateMany({
+      where: { id: { in: ids }, archivedAt: null },
+      data: { archivedAt: now },
+    });
+    await writeFileLibAudit(tx, {
+      action: FILE_LIB_AUDIT_ACTIONS.groupDelete,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: "group",
+      objectId: group.id,
+      objectPath: group.id,
+      detail: { name: group.name, archivedCount: result.count },
+    });
+    return { archivedCount: result.count };
+  });
+}
+
+/**
+ * 恢复(取消归档)。仅网站管理员。**与删除不对称**(决策7):
+ *  - 删除级联整棵子树;恢复只恢复「该组 + 其全部已归档祖先」,**不动子树**。
+ *  - 恢复祖先链是必须的:活跃组的祖先必须活跃,否则该组在树上无路径、
+ *    depth 推导(闭包行数)与"祖先必活跃"的前提脱节。
+ *  - 子树保持归档、仍可见(带标记),由管理员逐个决定是否恢复 —— 避免一次
+ *    恢复意外把整支历史组全部重新授权。
+ * 恢复即刻恢复该组贡献的权限(实时解析,不缓存)。
+ */
+export async function restoreMemberGroup(
+  deps: MemberGroupServiceDeps,
+  actor: FileLibActor,
+  groupId: string,
+): Promise<{ readonly restoredCount: number }> {
+  requireAdmin(actor);
+  return deps.prisma.$transaction(async (tx) => {
+    const group = await tx.memberGroup.findUnique({
+      where: { id: groupId },
+      select: { id: true, name: true, archivedAt: true },
+    });
+    if (group === null) throw new FileLibError(404, "group_not_found", "group not found");
+    if (group.archivedAt === null) {
+      throw new FileLibError(409, "not_archived", "group is not archived");
+    }
+
+    // 自身 + 祖先(闭包 descendantId=G 含 depth0 自身),只挑已归档的解标。
+    const chain = await tx.memberGroupClosure.findMany({
+      where: { descendantId: groupId },
+      select: { ancestorId: true },
+    });
+    const ids = chain.map((r) => r.ancestorId);
+    const result = await tx.memberGroup.updateMany({
+      where: { id: { in: ids }, archivedAt: { not: null } },
+      data: { archivedAt: null },
+    });
+
+    await writeFileLibAudit(tx, {
+      action: FILE_LIB_AUDIT_ACTIONS.groupRestore,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: "group",
+      objectId: group.id,
+      objectPath: group.id,
+      detail: { name: group.name, restoredCount: result.count },
+    });
+    return { restoredCount: result.count };
+  });
+}
+
+/**
+ * 组扁平列表(前端自行按 parentId/depth 拼树);仅网站管理员。
+ * includeArchived=true 时连已归档组一并返回(带 archivedAt 标记),供后台展示/恢复;
+ * 默认只返回活跃组 —— 权限相关的调用方一律走默认。
+ */
+export async function listMemberGroups(
+  deps: MemberGroupServiceDeps,
+  actor: FileLibActor,
+  includeArchived = false,
+): Promise<readonly MemberGroupDto[]> {
+  requireAdmin(actor);
+  const groups = await deps.prisma.memberGroup.findMany({
+    where: includeArchived ? {} : { archivedAt: null },
+    orderBy: { name: "asc" },
+    select: { id: true, parentId: true, name: true, description: true, archivedAt: true },
+  });
+  if (groups.length === 0) return [];
+  const ids = groups.map((g) => g.id);
+
+  // depth:每个组的闭包行数(自身 + 祖先)- 1。级联软删保证活跃组的祖先必活跃。
+  const closure = await deps.prisma.memberGroupClosure.findMany({
+    where: { descendantId: { in: ids } },
+    select: { descendantId: true },
+  });
+  const closureCount = new Map<string, number>();
+  for (const row of closure) {
+    closureCount.set(row.descendantId, (closureCount.get(row.descendantId) ?? 0) + 1);
+  }
+
+  const counts = await deps.prisma.memberGroupMembership.groupBy({
+    by: ["groupId"],
+    where: { groupId: { in: ids }, revokedAt: null },
+    _count: { _all: true },
+  });
+  const countByGroup = new Map(counts.map((c) => [c.groupId, c._count._all]));
+
+  return groups.map((g) => ({
+    id: g.id,
+    parentId: g.parentId,
+    name: g.name,
+    description: g.description,
+    depth: (closureCount.get(g.id) ?? 1) - 1,
+    memberCount: countByGroup.get(g.id) ?? 0,
+    archivedAt: g.archivedAt,
+  }));
+}
+
+/**
+ * 组成员列表(仅网站管理员)。**已归档组也可读**(决策7):软删是打标,成员行仍在,
+ * 后台需要看得见「这个组曾经有谁」。写操作(add/remove)仍要求活跃组 —— 可读不可改。
+ */
+export async function listMembers(
+  deps: MemberGroupServiceDeps,
+  actor: FileLibActor,
+  groupId: string,
+): Promise<readonly MemberGroupMemberDto[]> {
+  requireAdmin(actor);
+  const exists = await deps.prisma.memberGroup.findUnique({
+    where: { id: groupId },
+    select: { id: true },
+  });
+  if (exists === null) throw new FileLibError(404, "group_not_found", "group not found");
+  const rows = await deps.prisma.memberGroupMembership.findMany({
+    where: { groupId, revokedAt: null },
+    select: {
+      createdAt: true,
+      user: { select: { id: true, displayName: true, feishuOpenId: true, avatarUrl: true } },
+    },
+    orderBy: { createdAt: "asc" },
+  });
+  return rows.map((r) => ({
+    userId: r.user.id,
+    displayName: r.user.displayName,
+    feishuOpenId: r.user.feishuOpenId,
+    avatarUrl: r.user.avatarUrl,
+    joinedAt: r.createdAt,
+  }));
+}
+
+/** 加成员(userId 或 feishuOpenId 解析);已是活跃成员 → 409。仅网站管理员。 */
+export async function addMember(
+  deps: MemberGroupServiceDeps,
+  actor: FileLibActor,
+  groupId: string,
+  input: AddMemberInput,
+): Promise<MemberGroupMemberDto> {
+  requireAdmin(actor);
+  return deps.prisma.$transaction(async (tx) => {
+    const group = await requireActiveGroup(tx, groupId);
+    const user = await resolveUser(tx, input);
+    const existing = await tx.memberGroupMembership.findFirst({
+      where: { groupId: group.id, userId: user.id, revokedAt: null },
+      select: { id: true },
+    });
+    if (existing !== null) {
+      throw new FileLibError(409, "already_member", "user is already a member of this group");
+    }
+    const created = await tx.memberGroupMembership.create({
+      data: { groupId: group.id, userId: user.id },
+      select: { createdAt: true },
+    });
+    await writeFileLibAudit(tx, {
+      action: FILE_LIB_AUDIT_ACTIONS.groupMemberAdd,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: "group",
+      objectId: group.id,
+      objectPath: group.id,
+      detail: { userId: user.id },
+    });
+    return {
+      userId: user.id,
+      displayName: user.displayName,
+      feishuOpenId: user.feishuOpenId,
+      avatarUrl: user.avatarUrl,
+      joinedAt: created.createdAt,
+    };
+  });
+}
+
+/** 移成员(软删 revokedAt);不在组 → 404。仅网站管理员。 */
+export async function removeMember(
+  deps: MemberGroupServiceDeps,
+  actor: FileLibActor,
+  groupId: string,
+  userId: string,
+): Promise<void> {
+  requireAdmin(actor);
+  await deps.prisma.$transaction(async (tx) => {
+    const group = await requireActiveGroup(tx, groupId);
+    const membership = await tx.memberGroupMembership.findFirst({
+      where: { groupId: group.id, userId, revokedAt: null },
+      select: { id: true },
+    });
+    if (membership === null) throw new FileLibError(404, "member_not_found", "group member not found");
+    await tx.memberGroupMembership.update({
+      where: { id: membership.id },
+      data: { revokedAt: new Date() },
+    });
+    await writeFileLibAudit(tx, {
+      action: FILE_LIB_AUDIT_ACTIONS.groupMemberRemove,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: "group",
+      objectId: group.id,
+      objectPath: group.id,
+      detail: { userId },
+    });
+  });
+}
+
+/**
+ * 成员选择器:按显示名/openId 搜全局用户。**仅网站管理员**(与加成员同权,决策2)
+ * —— 加成员本就能指定任意全局用户(resolveUser 不要求 org 成员),故此端点不扩大
+ * 已有能力面,只是把"盲敲 id"变成"搜索选择"。
+ * excludeGroupId 给定时,过滤掉该组的活跃成员(避免选中必然 409 的人)。
+ */
+export async function searchUsers(
+  deps: MemberGroupServiceDeps,
+  actor: FileLibActor,
+  q: string,
+  excludeGroupId?: string,
+  limit = 20,
+): Promise<readonly UserSearchResult[]> {
+  requireAdmin(actor);
+  const keyword = q.trim();
+
+  let excludeIds: string[] = [];
+  if (excludeGroupId !== undefined && excludeGroupId !== "") {
+    const rows = await deps.prisma.memberGroupMembership.findMany({
+      where: { groupId: excludeGroupId, revokedAt: null },
+      select: { userId: true },
+    });
+    excludeIds = rows.map((r) => r.userId);
+  }
+
+  const users = await deps.prisma.user.findMany({
+    where: {
+      ...(excludeIds.length > 0 ? { id: { notIn: excludeIds } } : {}),
+      ...(keyword === ""
+        ? {}
+        : {
+            OR: [
+              { displayName: { contains: keyword, mode: "insensitive" as const } },
+              { feishuOpenId: { contains: keyword, mode: "insensitive" as const } },
+            ],
+          }),
+    },
+    take: limit,
+    orderBy: { displayName: "asc" },
+    select: { id: true, displayName: true, feishuOpenId: true, avatarUrl: true },
+  });
+
+  return users.map((u) => ({
+    userId: u.id,
+    displayName: u.displayName,
+    feishuOpenId: u.feishuOpenId,
+    avatarUrl: u.avatarUrl,
+  }));
+}
+
+/**
+ * 授权选择器搜索(契约 C2 /groups/search)。**不限管理员**(决策2)。
+ * 活跃组按名过滤,breadcrumb 由活跃祖先链按 depth 排序拼成。
+ */
+export async function searchMemberGroups(
+  deps: MemberGroupServiceDeps,
+  q: string,
+  limit = 20,
+): Promise<readonly MemberGroupSearchResult[]> {
+  const keyword = q.trim();
+  const groups = await deps.prisma.memberGroup.findMany({
+    where: {
+      archivedAt: null,
+      ...(keyword === "" ? {} : { name: { contains: keyword, mode: "insensitive" as const } }),
+    },
+    take: limit,
+    orderBy: { name: "asc" },
+    select: { id: true, name: true },
+  });
+  if (groups.length === 0) return [];
+  const ids = groups.map((g) => g.id);
+
+  // 祖先链(仅活跃祖先);depth 越大越靠根。
+  const closure = await deps.prisma.memberGroupClosure.findMany({
+    where: { descendantId: { in: ids }, ancestor: { archivedAt: null } },
+    select: { descendantId: true, ancestorId: true, depth: true },
+  });
+  const ancestorIds = [...new Set(closure.map((c) => c.ancestorId))];
+  const names = await deps.prisma.memberGroup.findMany({
+    where: { id: { in: ancestorIds } },
+    select: { id: true, name: true },
+  });
+  const nameById = new Map(names.map((n) => [n.id, n.name]));
+  const chainByGroup = new Map<string, { ancestorId: string; depth: number }[]>();
+  for (const row of closure) {
+    const arr = chainByGroup.get(row.descendantId) ?? [];
+    arr.push({ ancestorId: row.ancestorId, depth: row.depth });
+    chainByGroup.set(row.descendantId, arr);
+  }
+
+  return groups.map((g) => {
+    const chain = (chainByGroup.get(g.id) ?? []).slice().sort((a, b) => b.depth - a.depth);
+    const breadcrumb = chain
+      .map((c) => nameById.get(c.ancestorId) ?? "")
+      .filter((s) => s !== "")
+      .join(" / ");
+    return { id: g.id, name: g.name, breadcrumb: breadcrumb || g.name };
+  });
+}

hub/src/database/filelib/model.ts

@@ -0,0 +1,59 @@
+/**
+ * 文件库领域基础:角色秩、命名规则(D14)、错误类型。
+ *
+ * 语义锚定:仓库根《文件库-接口契约.md》(2.2 权限等级 / D8 可见性 / D14 命名)
+ * 与 .omo/文件库-开工计划.md。本模块是独立文件库,不复用 hub 的
+ * Folder/Project/PermissionGrant 体系。
+ */
+
+export const FILE_LIB_ROLES = ["VIEW", "EDIT", "MANAGE"] as const;
+export type FileLibRole = (typeof FILE_LIB_ROLES)[number];
+
+/** 契约 2.2:MANAGE > EDIT > VIEW,严格全序。 */
+export const ROLE_RANK: Record<FileLibRole, number> = { VIEW: 1, EDIT: 2, MANAGE: 3 };
+
+export function roleAtLeast(role: FileLibRole, min: FileLibRole): boolean {
+  return ROLE_RANK[role] >= ROLE_RANK[min];
+}
+
+/** 业务错误。statusCode 由路由层映射为 HTTP 响应(D8 语义在此层只表达为 code)。 */
+export class FileLibError extends Error {
+  constructor(
+    readonly statusCode: number,
+    readonly code: string,
+    message: string,
+    /** 结构化附加信息(如 409 时的 currentVersion),路由层并入错误响应。 */
+    readonly details?: Record<string, unknown>,
+  ) {
+    super(message);
+    this.name = "FileLibError";
+  }
+}
+
+export const NODE_NAME_MAX_LENGTH = 128;
+
+/** D14:禁 `/`;反斜杠同样禁止(它会变成存储路径的分隔符,且易用于伪装)。控制字符禁。 */
+const FORBIDDEN_NAME_CHARS = /[/\\\p{C}]/u;
+
+/**
+ * D14:NFC 归一化 + trim,然后校验长度与字符集。
+ * 违规抛 FileLibError(400, "invalid_name"),路由层原样透传。
+ */
+export function normalizeNodeName(raw: string): string {
+  const name = raw.normalize("NFC").trim();
+  if (name.length === 0) {
+    throw new FileLibError(400, "invalid_name", "name must not be empty");
+  }
+  if (name.length > NODE_NAME_MAX_LENGTH) {
+    throw new FileLibError(400, "invalid_name", `name exceeds ${NODE_NAME_MAX_LENGTH} characters`);
+  }
+  if (FORBIDDEN_NAME_CHARS.test(name)) {
+    throw new FileLibError(400, "invalid_name", "name must not contain '/', '\\' or control characters");
+  }
+  return name;
+}
+
+/** D14:活跃兄弟节点大小写不敏感唯一的比较键(DB 层另有部分唯一索引兜底)。 */
+export function nameKey(normalizedName: string): string {
+  return normalizedName.toLowerCase();
+}

hub/src/database/filelib/permission.ts

@@ -0,0 +1,68 @@
+/**
+ * 纯权限 reducer(契约 P6 / D8)。
+ *
+ * 设计约束(Metis 评审):本文件是纯函数层 —— 输入是"已解析好的" grant、祖先链
+ * 与用户组集合,不碰 DB / 网络。数据获取在 treeService。这样权限代数可以脱离
+ * 存储做密集单测与随机化不变量测试。
+ */
+
+import type { FileLibRole } from "./model.js";
+import { ROLE_RANK } from "./model.js";
+
+export interface FileLibGrantFact {
+  readonly nodeId: string;
+  readonly principalType: "USER" | "GROUP";
+  readonly principalId: string;
+  readonly role: FileLibRole;
+  readonly isCreatorGrant: boolean;
+}
+
+export interface EffectiveRoleInput {
+  /** 目标节点(self)。 */
+  readonly nodeId: string;
+  readonly nodeKind: "FOLDER" | "PROJECT";
+  /** 目标的全部祖先 id(不含 self,顺序无关)。 */
+  readonly ancestorIds: readonly string[];
+  readonly userId: string;
+  /** C2 resolve 结果:用户直接所属 + 全部祖先 group 的 id 集合。 */
+  readonly groupIds: readonly string[];
+  /** self ∪ ancestors 上的全部活跃 grant(revokedAt 已由获取层过滤)。 */
+  readonly grants: readonly FileLibGrantFact[];
+}
+
+/**
+ * 契约 P6:effective(user, R) = max { grant.role | s ∈ {user} ∪ groups*(user),
+ * r ∈ {R} ∪ ancestors(R) };无匹配 → null(无任何权限)。
+ * "个人权限不能降权"在 max 语义下天然成立 —— 只取最高,不做减法。
+ *
+ * 项目级 grant 恒参与计算(ADR-0030):原 D11 独立权限开关已废除,
+ * FileLibProjectSettings 不再被读取。
+ */
+export function effectiveRole(input: EffectiveRoleInput): FileLibRole | null {
+  const onChain = new Set<string>([input.nodeId, ...input.ancestorIds]);
+  const groups = new Set(input.groupIds);
+
+  let best: FileLibRole | null = null;
+  for (const grant of input.grants) {
+    if (!onChain.has(grant.nodeId)) continue;
+    if (grant.principalType === "USER" && grant.principalId !== input.userId) continue;
+    if (grant.principalType === "GROUP" && !groups.has(grant.principalId)) continue;
+    if (best === null || ROLE_RANK[grant.role] > ROLE_RANK[best]) best = grant.role;
+  }
+  return best;
+}
+
+/**
+ * D8 可见性语义:
+ *  - 完全无权限(effective === null)→ "not_found"(路由层映射 404,不泄露存在性);
+ *  - 有权限但不足 → "forbidden"(路由层映射 403)。
+ */
+export type AccessVerdict =
+  | { readonly allowed: true; readonly role: FileLibRole }
+  | { readonly allowed: false; readonly reason: "not_found" | "forbidden" };
+
+export function checkAccess(effective: FileLibRole | null, min: FileLibRole): AccessVerdict {
+  if (effective === null) return { allowed: false, reason: "not_found" };
+  if (ROLE_RANK[effective] < ROLE_RANK[min]) return { allowed: false, reason: "forbidden" };
+  return { allowed: true, role: effective };
+}

hub/src/database/filelib/routeShared.ts

@@ -0,0 +1,89 @@
+/**
+ * /database/api/* 路由共享件:依赖装配、actor 门禁、统一错误映射。
+ * 约定(与 admin 面一致):绝对路径;guard 前置 fail closed;查询 scope 到 silo org。
+ */
+
+import type { FastifyReply, FastifyRequest } from "fastify";
+import { Prisma } from "@prisma/client";
+import type { PrismaClient } from "@prisma/client";
+import { FileLibError } from "./model.js";
+import { requireFileLibActor } from "./guards.js";
+import type { FileLibActor, TreeServiceDeps } from "./treeService.js";
+import type { GroupResolver } from "./groupResolver.js";
+import type { VersionStore } from "./versionStore.js";
+import type { ExportAdapter } from "./exportService.js";
+
+export interface FileLibRouteDeps {
+  readonly prisma: PrismaClient;
+  readonly sessionSecret: string;
+  readonly organizationId: string;
+  readonly storageRoot: string;
+  readonly groupResolver: GroupResolver;
+  readonly versionStore: VersionStore;
+  readonly exportAdapters: readonly ExportAdapter[];
+}
+
+/** 组装 treeService 依赖(路由处理内直接使用)。 */
+export function treeDeps(deps: FileLibRouteDeps): TreeServiceDeps {
+  return {
+    prisma: deps.prisma,
+    groupResolver: deps.groupResolver,
+    versionStore: deps.versionStore,
+    organizationId: deps.organizationId,
+    storageRoot: deps.storageRoot,
+  };
+}
+
+/** 端点第一行调用;null = 响应已发(401/403),fail closed。 */
+export async function actorOrNull(
+  request: FastifyRequest,
+  reply: FastifyReply,
+  deps: FileLibRouteDeps,
+): Promise<FileLibActor | null> {
+  return requireFileLibActor(request, reply, {
+    prisma: deps.prisma,
+    sessionSecret: deps.sessionSecret,
+    organizationId: deps.organizationId,
+  });
+}
+
+/** 统一错误出口:FileLibError → 语义码;P2002 → 409;其余 → 500(不泄露内部)。 */
+export async function sendRouteError(reply: FastifyReply, error: unknown): Promise<void> {
+  if (error instanceof FileLibError) {
+    await reply.status(error.statusCode).send({
+      error: { code: error.code, message: error.message, ...(error.details ?? {}) },
+    });
+    return;
+  }
+  if (error instanceof Prisma.PrismaClientKnownRequestError && error.code === "P2002") {
+    await reply.status(409).send({ error: { code: "conflict", message: "uniqueness conflict" } });
+    return;
+  }
+  reply.log.error({ err: error }, "filelib route: unexpected error");
+  await reply.status(500).send({ error: { code: "internal", message: "internal error" } });
+}
+
+/** 请求体轻量校验(抛 FileLibError 400)。 */
+export function bodyObject(body: unknown): Record<string, unknown> {
+  if (typeof body !== "object" || body === null || Array.isArray(body)) {
+    throw new FileLibError(400, "invalid_request", "request body must be a JSON object");
+  }
+  return body as Record<string, unknown>;
+}
+
+export function requireString(obj: Record<string, unknown>, key: string): string {
+  const value = obj[key];
+  if (typeof value !== "string" || value === "") {
+    throw new FileLibError(400, "invalid_request", `missing or invalid field: ${key}`);
+  }
+  return value;
+}
+
+export function optionalString(obj: Record<string, unknown>, key: string): string | undefined {
+  const value = obj[key];
+  if (value === undefined || value === null) return undefined;
+  if (typeof value !== "string") {
+    throw new FileLibError(400, "invalid_request", `invalid field: ${key}`);
+  }
+  return value;
+}

hub/src/database/filelib/treeService.ts

@@ -0,0 +1,570 @@
+/**
+ * 文件库树服务(Phase 1 服务层,Phase 2 路由直接调用)。
+ *
+ * 语义锚定:
+ *  - D8  无权限 → 404 不泄露;越权 → 403(loadChain / requireAccess)
+ *  - D11 creator 不可变 + 自动 MANAGE grant;独立权限开关语义在 permission.ts
+ *  - D12 move = 本节点 MANAGE + 目标父 EDIT+,事务 + pg 咨询锁防并发成环
+ *  - D14 命名规则(model.ts)+ 活跃兄弟唯一(DB 部分唯一索引兜底)
+ *  - D15 删除只打标本节点;"任一祖先已删"即整支不可见
+ *  - D17 breadcrumb 无 View 的祖先只给占位,不泄露名字
+ *  - 树表示:parentId 权威;pathIds 为 id 编码的派生物化路径(name 不入路径,
+ *    rename 不重写后代;move 用一次前缀重写维护)
+ *
+ * 网站管理员(D19)= silo org 的 OWNER/ADMIN(契约 C4 的入驻适配):仅 root 创建
+ * 与 force_adjust 特权,不隐式穿透内容权限 —— 本文件所有读路径对它同样走
+ * effectiveRole,没有 admin 旁路。
+ */
+
+import { randomUUID } from "node:crypto";
+import path from "node:path";
+import { Prisma } from "@prisma/client";
+import type { PrismaClient, FileLibNode } from "@prisma/client";
+import {
+  FileLibError,
+  nameKey,
+  normalizeNodeName,
+  type FileLibRole,
+} from "./model.js";
+import { checkAccess, effectiveRole } from "./permission.js";
+import type { GroupResolver } from "./groupResolver.js";
+import type { VersionStore } from "./versionStore.js";
+import { FILE_LIB_AUDIT_ACTIONS, writeFileLibAudit } from "./audit.js";
+
+export interface FileLibActor {
+  readonly userId: string;
+  /** silo org OWNER/ADMIN(契约 C4 适配)。仅 root 创建/force_adjust 用,不给读旁路。 */
+  readonly isWebsiteAdmin: boolean;
+}
+
+export interface TreeServiceDeps {
+  readonly prisma: PrismaClient;
+  readonly groupResolver: GroupResolver;
+  readonly versionStore: VersionStore;
+  /** 文件库归属的 silo org(ADR-0020 租户隔离,一切查询 scope 到它)。 */
+  readonly organizationId: string;
+  /** 项目 git 仓库的磁盘根目录;项目仓 = <storageRoot>/<nodeId>。 */
+  readonly storageRoot: string;
+}
+
+/** 权限判定实际需要的最小依赖(grantService 等兄弟模块复用)。 */
+export type AccessDeps = Pick<TreeServiceDeps, "organizationId" | "groupResolver">;
+
+export interface InitialGrant {
+  readonly principalType: "USER" | "GROUP";
+  readonly principalId: string;
+  readonly role: FileLibRole;
+}
+
+type Tx = Prisma.TransactionClient;
+
+interface Chain {
+  readonly node: FileLibNode;
+  /** 根在前、直接父在后;不含 node 自身。 */
+  readonly ancestors: readonly FileLibNode[];
+}
+
+/* ---------------------------------------------------------------- 内部工具 */
+
+/** pathIds = "/rootId/.../selfId";切出祖先 id(不含 self)。 */
+function ancestorIdsOf(node: FileLibNode): string[] {
+  return node.pathIds.split("/").filter((seg) => seg !== "").slice(0, -1);
+}
+
+/** 取节点 + 祖先链(org scope);D15:自身或任一祖先已删 → 404。 */
+async function loadVisibleChain(
+  tx: Tx,
+  organizationId: string,
+  nodeId: string,
+): Promise<Chain> {
+  const node = await tx.fileLibNode.findFirst({ where: { id: nodeId, organizationId } });
+  if (node === null) throw new FileLibError(404, "node_not_found", "node not found");
+  const ancestorIds = ancestorIdsOf(node);
+  const ancestors = ancestorIds.length === 0
+    ? []
+    : await tx.fileLibNode.findMany({ where: { organizationId, id: { in: ancestorIds } } });
+  if (node.deletedAt !== null || ancestors.some((a) => a.deletedAt !== null)) {
+    // D15:已删子树对外"不存在"(D8 不泄露)。
+    throw new FileLibError(404, "node_not_found", "node not found");
+  }
+  const byId = new Map(ancestors.map((a) => [a.id, a]));
+  const ordered = ancestorIds
+    .map((id) => byId.get(id))
+    .filter((a): a is FileLibNode => a !== undefined);
+  return { node, ancestors: ordered };
+}
+
+/** 数据获取层:把 chain、grants、groups 装配成纯 reducer 的输入。 */
+async function resolveRole(
+  tx: Tx,
+  deps: AccessDeps,
+  actor: FileLibActor,
+  chain: Chain,
+): Promise<FileLibRole | null> {
+  const chainIds = [...chain.ancestors.map((a) => a.id), chain.node.id];
+  const grants = await tx.fileLibGrant.findMany({
+    where: { organizationId: deps.organizationId, revokedAt: null, nodeId: { in: chainIds } },
+    select: { nodeId: true, principalType: true, principalId: true, role: true, isCreatorGrant: true },
+  });
+  const groupIds = await deps.groupResolver.resolveMemberGroupIds(actor.userId);
+  return effectiveRole({
+    nodeId: chain.node.id,
+    nodeKind: chain.node.kind,
+    ancestorIds: chain.ancestors.map((a) => a.id),
+    userId: actor.userId,
+    groupIds,
+    grants,
+  });
+}
+
+/** D8 门禁:loadVisibleChain + resolveRole + checkAccess,失败抛 FileLibError。 */
+async function requireAccess(
+  tx: Tx,
+  deps: AccessDeps,
+  actor: FileLibActor,
+  nodeId: string,
+  minRole: FileLibRole,
+): Promise<Chain & { readonly role: FileLibRole }> {
+  const chain = await loadVisibleChain(tx, deps.organizationId, nodeId);
+  const role = await resolveRole(tx, deps, actor, chain);
+  const verdict = checkAccess(role, minRole);
+  if (!verdict.allowed) {
+    throw verdict.reason === "not_found"
+      ? new FileLibError(404, "node_not_found", "node not found")
+      : new FileLibError(403, "forbidden", `requires ${minRole}`);
+  }
+  return { ...chain, role: verdict.role };
+}
+
+/**
+ * 兄弟模块(grantService 等)共用的 tx 内门禁:在调用方自己的事务里做
+ * 权限校验,校验与后续写同一根事务绳,避免 check-tx / write-tx 之间的竞态。
+ */
+export async function requireAccessInTx(
+  tx: Tx,
+  deps: AccessDeps,
+  actor: FileLibActor,
+  nodeId: string,
+  minRole: FileLibRole,
+): Promise<Chain & { readonly role: FileLibRole }> {
+  return requireAccess(tx, deps, actor, nodeId, minRole);
+}
+
+/** P2002(活跃兄弟名部分唯一索引)→ 409。 */
+function rethrowNameConflict(error: unknown, name: string): never {
+  if (error instanceof Prisma.PrismaClientKnownRequestError && error.code === "P2002") {
+    throw new FileLibError(409, "name_conflict", `an active sibling named "${name}" already exists`);
+  }
+  throw error;
+}
+
+function nodeAction(kind: FileLibNode["kind"], verb: "Create" | "Rename" | "Move" | "Delete"): string {
+  const table = kind === "PROJECT"
+    ? { Create: FILE_LIB_AUDIT_ACTIONS.projectCreate, Rename: FILE_LIB_AUDIT_ACTIONS.projectRename, Move: FILE_LIB_AUDIT_ACTIONS.projectMove, Delete: FILE_LIB_AUDIT_ACTIONS.projectDelete }
+    : { Create: FILE_LIB_AUDIT_ACTIONS.folderCreate, Rename: FILE_LIB_AUDIT_ACTIONS.folderRename, Move: FILE_LIB_AUDIT_ACTIONS.folderMove, Delete: FILE_LIB_AUDIT_ACTIONS.folderDelete };
+  return table[verb];
+}
+
+function validateInitialGrants(actor: FileLibActor, grants: readonly InitialGrant[]): void {
+  const seen = new Set<string>();
+  for (const grant of grants) {
+    const key = `${grant.principalType}:${grant.principalId}`;
+    if (seen.has(key)) throw new FileLibError(400, "duplicate_principal", `duplicate grant principal: ${key}`);
+    seen.add(key);
+    if (grant.principalType === "USER" && grant.principalId === actor.userId) {
+      throw new FileLibError(400, "duplicate_principal", "creator already holds MANAGE via the creator grant");
+    }
+    // v1:不校验 group 存在性(C2 未提供批量校验口;给不存在 group 的授权天然无效,不危害)。
+  }
+}
+
+/* ---------------------------------------------------------------- 公共操作 */
+
+export interface CreateNodeInput {
+  readonly parentId: string | null;
+  readonly kind: "FOLDER" | "PROJECT";
+  readonly name: string;
+  readonly description?: string | undefined;
+  readonly grants?: readonly InitialGrant[] | undefined;
+}
+
+/**
+ * 创建文件夹/项目。root 创建仅网站管理员(契约 2.1);非 root 需父节点 EDIT+。
+ * creator 自动 MANAGE(D11);项目走 provisioning 状态机:PROVISIONING → init → READY。
+ */
+export async function createNode(
+  deps: TreeServiceDeps,
+  actor: FileLibActor,
+  input: CreateNodeInput,
+): Promise<FileLibNode> {
+  const name = normalizeNodeName(input.name);
+  const initialGrants = input.grants ?? [];
+  validateInitialGrants(actor, initialGrants);
+
+  const id = randomUUID();
+  let pathIds: string;
+  let storageDir: string | null = null;
+
+  const created = await deps.prisma.$transaction(async (tx) => {
+    if (input.parentId === null) {
+      if (!actor.isWebsiteAdmin) {
+        throw new FileLibError(403, "forbidden", "root creation requires website administrator");
+      }
+      pathIds = `/${id}`;
+    } else {
+      const parent = await requireAccess(tx, deps, actor, input.parentId, "EDIT");
+      if (parent.node.kind !== "FOLDER") {
+        throw new FileLibError(400, "invalid_parent", "projects cannot have children");
+      }
+      pathIds = `${parent.node.pathIds}/${id}`;
+    }
+
+    if (input.kind === "PROJECT") {
+      storageDir = path.join(deps.storageRoot, id);
+    }
+
+    let node: FileLibNode;
+    try {
+      node = await tx.fileLibNode.create({
+        data: {
+          id,
+          organizationId: deps.organizationId,
+          parentId: input.parentId,
+          kind: input.kind,
+          name,
+          nameLower: nameKey(name),
+          pathIds,
+          creatorId: actor.userId,
+          provisionStatus: input.kind === "PROJECT" ? "PROVISIONING" : "READY",
+          storageDir,
+          ...(input.description !== undefined && input.description.trim() !== ""
+            ? { description: input.description.trim() }
+            : {}),
+        },
+      });
+    } catch (error) {
+      rethrowNameConflict(error, name);
+    }
+
+    await tx.fileLibGrant.create({
+      data: {
+        organizationId: deps.organizationId,
+        nodeId: id,
+        principalType: "USER",
+        principalId: actor.userId,
+        role: "MANAGE",
+        isCreatorGrant: true,
+        createdByUserId: actor.userId,
+      },
+    });
+    for (const grant of initialGrants) {
+      await tx.fileLibGrant.create({
+        data: {
+          organizationId: deps.organizationId,
+          nodeId: id,
+          principalType: grant.principalType,
+          principalId: grant.principalId,
+          role: grant.role,
+          createdByUserId: actor.userId,
+        },
+      });
+    }
+
+    await writeFileLibAudit(tx, {
+      action: nodeAction(input.kind, "Create"),
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: input.kind === "PROJECT" ? "project" : "folder",
+      objectId: id,
+      objectPath: pathIds,
+      detail: { name, parentId: input.parentId, initialGrants: initialGrants.length },
+    });
+    for (const grant of initialGrants) {
+      await writeFileLibAudit(tx, {
+        action: FILE_LIB_AUDIT_ACTIONS.permissionGrant,
+        actorUserId: actor.userId,
+        organizationId: deps.organizationId,
+        objectType: "grant",
+        objectId: id,
+        objectPath: pathIds,
+        detail: { principalType: grant.principalType, principalId: grant.principalId, role: grant.role },
+      });
+    }
+    return node;
+  });
+
+  // provisioning 状态机(Metis 风险#1):DB 行已持久,init 失败 → FAILED 可重试/对账。
+  if (input.kind === "PROJECT" && storageDir !== null) {
+    try {
+      await deps.versionStore.init(storageDir);
+      return await deps.prisma.fileLibNode.update({
+        where: { id: created.id },
+        data: { provisionStatus: "READY" },
+      });
+    } catch (error) {
+      await deps.prisma.fileLibNode
+        .update({ where: { id: created.id }, data: { provisionStatus: "FAILED" } })
+        .catch(() => undefined);
+      throw new FileLibError(500, "provision_failed", `repository initialization failed: ${String(error)}`);
+    }
+  }
+  return created;
+}
+
+/** 重命名(需本节点 MANAGE,契约 8.2)。id 路径不含 name,后代无需重写。 */
+export async function renameNode(
+  deps: TreeServiceDeps,
+  actor: FileLibActor,
+  nodeId: string,
+  rawName: string,
+): Promise<FileLibNode> {
+  const name = normalizeNodeName(rawName);
+  return deps.prisma.$transaction(async (tx) => {
+    const { node } = await requireAccess(tx, deps, actor, nodeId, "MANAGE");
+    let updated: FileLibNode;
+    try {
+      updated = await tx.fileLibNode.update({
+        where: { id: node.id },
+        data: { name, nameLower: nameKey(name) },
+      });
+    } catch (error) {
+      rethrowNameConflict(error, name);
+    }
+    await writeFileLibAudit(tx, {
+      action: nodeAction(node.kind, "Rename"),
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: node.kind === "PROJECT" ? "project" : "folder",
+      objectId: node.id,
+      objectPath: node.pathIds,
+      detail: { from: node.name, to: name },
+    });
+    return updated;
+  });
+}
+
+/**
+ * 移动(D12):本节点 MANAGE + 目标父 EDIT+(移到 root 需网站管理员);
+ * 事务 + org 级咨询锁防并发成环;后代 pathIds 一次前缀重写。
+ */
+export async function moveNode(
+  deps: TreeServiceDeps,
+  actor: FileLibActor,
+  nodeId: string,
+  newParentId: string | null,
+): Promise<FileLibNode> {
+  return deps.prisma.$transaction(async (tx) => {
+    await tx.$executeRaw`SELECT pg_advisory_xact_lock(hashtext(${"filelib:tree:" + deps.organizationId}))`;
+
+    const { node } = await requireAccess(tx, deps, actor, nodeId, "MANAGE");
+    if (node.parentId === newParentId) return node;
+
+    let newPathIds: string;
+    if (newParentId === null) {
+      if (!actor.isWebsiteAdmin) {
+        throw new FileLibError(403, "forbidden", "moving to root requires website administrator");
+      }
+      newPathIds = `/${node.id}`;
+    } else {
+      const parent = await requireAccess(tx, deps, actor, newParentId, "EDIT");
+      if (parent.node.kind !== "FOLDER") {
+        throw new FileLibError(400, "invalid_parent", "projects cannot have children");
+      }
+      if (parent.node.id === node.id || parent.node.pathIds.startsWith(`${node.pathIds}/`)) {
+        throw new FileLibError(400, "move_into_own_subtree", "cannot move a node into its own subtree");
+      }
+      newPathIds = `${parent.node.pathIds}/${node.id}`;
+    }
+
+    const oldPrefix = node.pathIds;
+    let updated: FileLibNode;
+    try {
+      updated = await tx.fileLibNode.update({
+        where: { id: node.id },
+        data: { parentId: newParentId, pathIds: newPathIds },
+      });
+      // 派生列维护:整支后代的前缀重写(id 编码,与 name 无关)。
+      await tx.$executeRaw`
+        UPDATE "FileLibNode"
+        SET "pathIds" = ${newPathIds} || substring("pathIds" from ${oldPrefix.length + 1}::int)
+        WHERE "organizationId" = ${deps.organizationId}
+          AND "pathIds" LIKE ${oldPrefix + "/%"}
+      `;
+    } catch (error) {
+      rethrowNameConflict(error, node.name);
+    }
+    await writeFileLibAudit(tx, {
+      action: nodeAction(node.kind, "Move"),
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: node.kind === "PROJECT" ? "project" : "folder",
+      objectId: node.id,
+      objectPath: newPathIds,
+      detail: { fromParentId: node.parentId, toParentId: newParentId },
+    });
+    return updated;
+  });
+}
+
+/** 软删除(D15):只打标本节点,后代靠"任一祖先已删"过滤;需 MANAGE。 */
+export async function softDeleteNode(
+  deps: TreeServiceDeps,
+  actor: FileLibActor,
+  nodeId: string,
+): Promise<void> {
+  await deps.prisma.$transaction(async (tx) => {
+    const { node } = await requireAccess(tx, deps, actor, nodeId, "MANAGE");
+    await tx.fileLibNode.update({ where: { id: node.id }, data: { deletedAt: new Date() } });
+    await writeFileLibAudit(tx, {
+      action: nodeAction(node.kind, "Delete"),
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: node.kind === "PROJECT" ? "project" : "folder",
+      objectId: node.id,
+      objectPath: node.pathIds,
+      detail: { name: node.name },
+    });
+  });
+}
+
+/** 自查生效权限(契约 9.2 effective-permission)。D8:null 角色即不可见,404。 */
+export async function getEffectiveRole(
+  deps: TreeServiceDeps,
+  actor: FileLibActor,
+  nodeId: string,
+): Promise<FileLibRole | null> {
+  return deps.prisma.$transaction(async (tx) => {
+    const chain = await loadVisibleChain(tx, deps.organizationId, nodeId);
+    const role = await resolveRole(tx, deps, actor, chain);
+    if (role === null) throw new FileLibError(404, "node_not_found", "node not found");
+    return role;
+  });
+}
+
+export interface BreadcrumbEntry {
+  readonly depth: number;
+  /** D17:无 View 的祖先 id/name 置为 null(不泄露)。 */
+  readonly id: string | null;
+  readonly name: string | null;
+  readonly kind: "FOLDER" | "PROJECT";
+  /** 该节点对调用者的 effective role;无 View 为 null。 */
+  readonly role: FileLibRole | null;
+}
+
+/** D17 面包屑:需 self VIEW;链上每个节点单独算权限,无 View 只留占位。 */
+export async function breadcrumb(
+  deps: TreeServiceDeps,
+  actor: FileLibActor,
+  nodeId: string,
+): Promise<readonly BreadcrumbEntry[]> {
+  return deps.prisma.$transaction(async (tx) => {
+    const chain = await loadVisibleChain(tx, deps.organizationId, nodeId);
+    const selfRole = await resolveRole(tx, deps, actor, chain);
+    if (checkAccess(selfRole, "VIEW").allowed !== true) {
+      throw new FileLibError(404, "node_not_found", "node not found");
+    }
+    const groupIds = await deps.groupResolver.resolveMemberGroupIds(actor.userId);
+    const chainNodes = [...chain.ancestors, chain.node];
+    const chainIds = chainNodes.map((n) => n.id);
+    const allGrants = await tx.fileLibGrant.findMany({
+      where: { organizationId: deps.organizationId, revokedAt: null, nodeId: { in: chainIds } },
+      select: { nodeId: true, principalType: true, principalId: true, role: true, isCreatorGrant: true },
+    });
+
+    return chainNodes.map((current, depth) => {
+      const role = effectiveRole({
+        nodeId: current.id,
+        nodeKind: current.kind,
+        ancestorIds: chainNodes.slice(0, depth).map((n) => n.id),
+        userId: actor.userId,
+        groupIds,
+        grants: allGrants,
+      });
+      const visible = role !== null;
+      return {
+        depth,
+        id: visible ? current.id : null,
+        name: visible ? current.name : null,
+        kind: current.kind,
+        role,
+      };
+    });
+  });
+}
+
+export interface ChildNodeDto {
+  readonly id: string;
+  readonly parentId: string | null;
+  readonly kind: "FOLDER" | "PROJECT";
+  readonly name: string;
+  readonly role: FileLibRole;
+  readonly createdAt: Date;
+  readonly updatedAt: Date;
+}
+
+/** 列子节点(parentId=null 列 root);只返回调用者有 View 的(D8/P7)。 */
+export async function listChildren(
+  deps: TreeServiceDeps,
+  actor: FileLibActor,
+  parentId: string | null,
+): Promise<readonly ChildNodeDto[]> {
+  return deps.prisma.$transaction(async (tx) => {
+    let parentAncestorIds: string[] = [];
+    if (parentId !== null) {
+      const parent = await requireAccess(tx, deps, actor, parentId, "VIEW");
+      parentAncestorIds = [...parent.ancestors.map((a) => a.id), parent.node.id];
+    }
+    const children = await tx.fileLibNode.findMany({
+      where: { organizationId: deps.organizationId, parentId, deletedAt: null },
+      orderBy: [{ kind: "asc" }, { nameLower: "asc" }],
+    });
+    if (children.length === 0) return [];
+
+    // D13:一次请求只 resolve 一次组、拉一次 grant 集,批量计算,不做 per-child 往返。
+    const idsToFetch = [...parentAncestorIds, ...children.map((c) => c.id)];
+    const allGrants = await tx.fileLibGrant.findMany({
+      where: { organizationId: deps.organizationId, revokedAt: null, nodeId: { in: idsToFetch } },
+      select: { nodeId: true, principalType: true, principalId: true, role: true, isCreatorGrant: true },
+    });
+    const groupIds = await deps.groupResolver.resolveMemberGroupIds(actor.userId);
+
+    const out: ChildNodeDto[] = [];
+    for (const child of children) {
+      const role = effectiveRole({
+        nodeId: child.id,
+        nodeKind: child.kind,
+        ancestorIds: parentAncestorIds,
+        userId: actor.userId,
+        groupIds,
+        grants: allGrants,
+      });
+      if (role === null) continue;
+      out.push({
+        id: child.id,
+        parentId: child.parentId,
+        kind: child.kind,
+        name: child.name,
+        role,
+        createdAt: child.createdAt,
+        updatedAt: child.updatedAt,
+      });
+    }
+    return out;
+  });
+}
+
+/** 更新节点简介（需 EDIT+；不记审计，非权限敏感的内容字段）。 */
+export async function updateNodeDescription(
+  deps: TreeServiceDeps,
+  actor: FileLibActor,
+  nodeId: string,
+  description: string | null,
+): Promise<FileLibNode> {
+  return deps.prisma.$transaction(async (tx) => {
+    const { node } = await requireAccessInTx(tx, deps, actor, nodeId, "EDIT");
+    return tx.fileLibNode.update({
+      where: { id: node.id },
+      data: { description: description?.trim() || null },
+    });
+  });
+}

hub/src/database/filelib/versionStore.ts

@@ -0,0 +1,280 @@
+/**
+ * VersionStore port(契约 C1)+ 开发用内存实现。
+ *
+ * 版本团队交付 npm 工具包后,用同一接口替换 createInMemoryVersionStore。
+ * 语义红线(计划"Mock 保真红线"):冲突走返回值(S1)、baseVersion=null 表新建(S2)、
+ * init 幂等(S7)、同 projectDir 写操作串行化(S4)、文件级版本(D16)。
+ *
+ * 持久化:传 persistPath 时把仓库快照落盘(JSON),重启后恢复 —— 纯粹为开发期
+ * demo 稳定,不改变任何语义;生产由真包替换,此文件不参与。
+ */
+
+import { mkdirSync, readFileSync, renameSync, writeFileSync } from "node:fs";
+import path from "node:path";
+import { FileLibError } from "./model.js";
+
+export type VersionId = string;
+
+export interface CommitRequest {
+  /** 编辑起始版本;null 表示新建文件(已存在则 conflict,S2)。 */
+  readonly baseVersion: VersionId | null;
+  readonly content: string | Buffer;
+  readonly message?: string | undefined;
+  readonly author?: string | undefined;
+}
+
+export type CommitResult =
+  | { readonly status: "ok"; readonly version: VersionId }
+  | { readonly status: "conflict"; readonly currentVersion: VersionId };
+
+export interface VersionInfo {
+  readonly version: VersionId;
+  readonly message: string;
+  readonly author: string | undefined;
+  readonly committedAt: string;
+}
+
+export interface FileEntry {
+  readonly path: string;
+  readonly size: number;
+}
+
+export interface VersionStore {
+  init(projectDir: string): Promise<void>;
+  list(projectDir: string, prefix?: string): Promise<FileEntry[]>;
+  head(projectDir: string, filePath: string): Promise<VersionId>;
+  read(projectDir: string, filePath: string, at?: VersionId): Promise<Buffer>;
+  commit(projectDir: string, filePath: string, req: CommitRequest): Promise<CommitResult>;
+  remove(projectDir: string, filePath: string, baseVersion: VersionId): Promise<CommitResult>;
+  diff(projectDir: string, filePath: string, from: VersionId, to: VersionId): Promise<string>;
+  history(projectDir: string, filePath: string, limit?: number): Promise<VersionInfo[]>;
+}
+
+interface StoredVersion {
+  readonly version: VersionId;
+  readonly content: Buffer;
+  readonly message: string;
+  readonly author: string | undefined;
+  readonly committedAt: string;
+  readonly deleted: boolean;
+}
+
+interface Repo {
+  /** 每文件一条版本链(D16:版本是文件级的,互不干扰)。 */
+  readonly files: Map<string, StoredVersion[]>;
+  counter: number;
+}
+
+/** S4:同 projectDir 的写操作经 per-repo promise 链串行化。 */
+function createKeySerializer(): <T>(key: string, fn: () => Promise<T>) => Promise<T> {
+  const tails = new Map<string, Promise<unknown>>();
+  return <T>(key: string, fn: () => Promise<T>): Promise<T> => {
+    const prev = tails.get(key) ?? Promise.resolve();
+    const next = prev.then(fn, fn);
+    tails.set(key, next.catch(() => undefined));
+    return next;
+  };
+}
+
+function toBuffer(content: string | Buffer): Buffer {
+  return typeof content === "string" ? Buffer.from(content, "utf8") : content;
+}
+
+/** 极简 unified-diff(mock 保真够用;真包的 diff 以版本团队为准)。 */
+function naiveDiff(fromText: string, toText: string): string {
+  const a = fromText.split("\n");
+  const b = toText.split("\n");
+  const out: string[] = ["--- a", "+++ b"];
+  const max = Math.max(a.length, b.length);
+  for (let i = 0; i < max; i += 1) {
+    const al = a[i];
+    const bl = b[i];
+    if (al === bl) {
+      if (al !== undefined) out.push(` ${al}`);
+    } else {
+      if (al !== undefined) out.push(`-${al}`);
+      if (bl !== undefined) out.push(`+${bl}`);
+    }
+  }
+  return out.join("\n");
+}
+
+export function createInMemoryVersionStore(persistPath?: string): VersionStore {
+  const repos = new Map<string, Repo>();
+  const serialize = createKeySerializer();
+
+  /* ---------------- 开发期快照持久化(语义不变,仅防重启丢失) ---------------- */
+  interface PersistedVersion extends Omit<StoredVersion, "content"> {
+    content: string; // base64
+  }
+  function loadPersisted(): void {
+    if (persistPath === undefined) return;
+    try {
+      const raw = JSON.parse(readFileSync(persistPath, "utf8")) as {
+        repos: Record<string, { counter: number; files: Record<string, PersistedVersion[]> }>;
+      };
+      for (const [dir, repo] of Object.entries(raw.repos)) {
+        const files = new Map<string, StoredVersion[]>();
+        for (const [filePath, versions] of Object.entries(repo.files)) {
+          files.set(filePath, versions.map((v) => ({ ...v, content: Buffer.from(v.content, "base64") })));
+        }
+        repos.set(dir, { files, counter: repo.counter });
+      }
+    } catch { /* 无快照或损坏 → 空库起步(开发语义) */ }
+  }
+  function savePersisted(): void {
+    if (persistPath === undefined) return;
+    const out: Record<string, { counter: number; files: Record<string, PersistedVersion[]> }> = {};
+    for (const [dir, repo] of repos) {
+      const files: Record<string, PersistedVersion[]> = {};
+      for (const [filePath, versions] of repo.files) {
+        files[filePath] = versions.map((v) => ({ ...v, content: v.content.toString("base64") }));
+      }
+      out[dir] = { counter: repo.counter, files };
+    }
+    try {
+      mkdirSync(path.dirname(persistPath), { recursive: true });
+      const tmp = `${persistPath}.tmp`;
+      writeFileSync(tmp, JSON.stringify({ repos: out }), "utf8");
+      renameSync(tmp, persistPath);
+    } catch { /* 快照失败不影响开发使用 */ }
+  }
+  loadPersisted();
+
+  function requireRepo(projectDir: string): Repo {
+    const repo = repos.get(projectDir);
+    if (repo === undefined) {
+      throw new FileLibError(404, "repo_not_found", `repository not initialized: ${projectDir}`);
+    }
+    return repo;
+  }
+
+  function liveVersion(repo: Repo, filePath: string): StoredVersion {
+    const chain = repo.files.get(filePath);
+    const latest = chain?.[chain.length - 1];
+    if (chain === undefined || latest === undefined || latest.deleted) {
+      throw new FileLibError(404, "file_not_found", `file not found: ${filePath}`);
+    }
+    return latest;
+  }
+
+  function findVersion(repo: Repo, filePath: string, version: VersionId): StoredVersion {
+    const found = repo.files.get(filePath)?.find((v) => v.version === version);
+    if (found === undefined) {
+      throw new FileLibError(404, "version_not_found", `version not found: ${filePath}@${version}`);
+    }
+    return found;
+  }
+
+  return {
+    async init(projectDir) {
+      await serialize(projectDir, async () => {
+        // S7:幂等,重复调用不报错、不重建。
+        const created = repos.get(projectDir) === undefined;
+        repos.set(projectDir, repos.get(projectDir) ?? { files: new Map(), counter: 0 });
+        if (created) savePersisted();
+      });
+    },
+
+    async list(projectDir, prefix) {
+      const repo = requireRepo(projectDir);
+      const out: FileEntry[] = [];
+      for (const [path, chain] of repo.files) {
+        const latest = chain[chain.length - 1];
+        if (latest === undefined || latest.deleted) continue;
+        if (prefix !== undefined && !path.startsWith(prefix)) continue;
+        out.push({ path, size: latest.content.byteLength });
+      }
+      return out.sort((a, b) => a.path.localeCompare(b.path));
+    },
+
+    async head(projectDir, filePath) {
+      return liveVersion(requireRepo(projectDir), filePath).version;
+    },
+
+    async read(projectDir, filePath, at) {
+      const repo = requireRepo(projectDir);
+      if (at !== undefined) return findVersion(repo, filePath, at).content;
+      return liveVersion(repo, filePath).content;
+    },
+
+    async commit(projectDir, filePath, req) {
+      return serialize(projectDir, async (): Promise<CommitResult> => {
+        const repo = requireRepo(projectDir);
+        const chain = repo.files.get(filePath) ?? [];
+        const latest = chain[chain.length - 1];
+        const currentVersion = latest !== undefined && !latest.deleted ? latest.version : null;
+
+        // S2:新建(baseVersion null)要求文件当前不存在;否则要求 baseVersion 精确等于当前版本(S1)。
+        if (req.baseVersion === null) {
+          if (currentVersion !== null) return { status: "conflict", currentVersion };
+        } else if (req.baseVersion !== currentVersion) {
+          return {
+            status: "conflict",
+            currentVersion: currentVersion ?? req.baseVersion,
+          };
+        }
+
+        repo.counter += 1;
+        const version = `v${repo.counter}`;
+        chain.push({
+          version,
+          content: toBuffer(req.content),
+          message: req.message ?? `commit ${version}`,
+          author: req.author,
+          committedAt: new Date().toISOString(),
+          deleted: false,
+        });
+        repo.files.set(filePath, chain);
+        savePersisted();
+        return { status: "ok", version };
+      });
+    },
+
+    async remove(projectDir, filePath, baseVersion) {
+      return serialize(projectDir, async (): Promise<CommitResult> => {
+        const repo = requireRepo(projectDir);
+        const chain = repo.files.get(filePath) ?? [];
+        const latest = chain[chain.length - 1];
+        const currentVersion = latest !== undefined && !latest.deleted ? latest.version : null;
+        if (currentVersion === null) {
+          throw new FileLibError(404, "file_not_found", `file not found: ${filePath}`);
+        }
+        if (baseVersion !== currentVersion) return { status: "conflict", currentVersion };
+        repo.counter += 1;
+        const version = `v${repo.counter}`;
+        chain.push({
+          version,
+          content: Buffer.alloc(0),
+          message: `remove ${filePath}`,
+          author: undefined,
+          committedAt: new Date().toISOString(),
+          deleted: true,
+        });
+        repo.files.set(filePath, chain);
+        savePersisted();
+        return { status: "ok", version };
+      });
+    },
+
+    async diff(projectDir, filePath, from, to) {
+      const repo = requireRepo(projectDir);
+      const a = findVersion(repo, filePath, from);
+      const b = findVersion(repo, filePath, to);
+      return naiveDiff(a.content.toString("utf8"), b.content.toString("utf8"));
+    },
+
+    async history(projectDir, filePath, limit) {
+      const repo = requireRepo(projectDir);
+      const chain = repo.files.get(filePath) ?? [];
+      const infos: VersionInfo[] = chain.map((v) => ({
+        version: v.version,
+        message: v.message,
+        author: v.author,
+        committedAt: v.committedAt,
+      }));
+      const ordered = infos.reverse();
+      return limit !== undefined ? ordered.slice(0, limit) : ordered;
+    },
+  };
+}