feat(database): init database folder frontend and permission

2026-07-23 23:41:11 +08:00
parent 5df1900ca8
commit 4021e58d5d
67 changed files with 9436 additions and 150 deletions
@@ -0,0 +1,10 @@
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+  "updatedAt": "2026-07-23T15:40:15.630Z",
+  "sources": {
+    "background-task": {
+      "state": "idle",
+      "updatedAt": "2026-07-23T15:40:15.630Z"
+    }
+  }
+}
@@ -0,0 +1,10 @@
+{
+  "sessionID": "ses_07252990dffeRFmXnvdyynty2z",
+  "updatedAt": "2026-07-23T06:33:33.086Z",
+  "sources": {
+    "background-task": {
+      "state": "idle",
+      "updatedAt": "2026-07-23T06:33:33.086Z"
+    }
+  }
+}
@@ -0,0 +1,10 @@
+{
+  "sessionID": "ses_075d214a0ffe6mU8VNgukUfH5L",
+  "updatedAt": "2026-07-22T14:15:01.741Z",
+  "sources": {
+    "background-task": {
+      "state": "idle",
+      "updatedAt": "2026-07-22T14:15:01.741Z"
+    }
+  }
+}
@@ -0,0 +1,10 @@
+{
+  "sessionID": "ses_075d3282bffejz0HFE00taOaGM",
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+  "sources": {
+    "background-task": {
+      "state": "idle",
+      "updatedAt": "2026-07-22T14:13:54.785Z"
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+}
@@ -0,0 +1,10 @@
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+  "sources": {
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+      "updatedAt": "2026-07-22T06:17:18.238Z"
+    }
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+}
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+  "sources": {
+    "background-task": {
+      "state": "idle",
+      "updatedAt": "2026-07-21T13:55:58.878Z"
+    }
+  }
+}
@@ -0,0 +1,10 @@
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+  "sources": {
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+      "state": "idle",
+      "updatedAt": "2026-07-21T13:38:01.132Z"
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+}
@@ -0,0 +1,10 @@
+{
+  "sessionID": "ses_07b932dddffecSipFLwlJOvoJ9",
+  "updatedAt": "2026-07-21T11:27:10.420Z",
+  "sources": {
+    "background-task": {
+      "state": "idle",
+      "updatedAt": "2026-07-21T11:27:10.420Z"
+    }
+  }
+}
@@ -0,0 +1,10 @@
+{
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+  "updatedAt": "2026-07-21T11:18:53.449Z",
+  "sources": {
+    "background-task": {
+      "state": "idle",
+      "updatedAt": "2026-07-21T11:18:53.449Z"
+    }
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+}
@@ -0,0 +1,10 @@
+{
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+  "updatedAt": "2026-07-21T11:18:29.979Z",
+  "sources": {
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+      "state": "idle",
+      "updatedAt": "2026-07-21T11:18:29.979Z"
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+}
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+  "sources": {
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+      "updatedAt": "2026-07-21T11:21:09.776Z"
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+}
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+{
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+  "sources": {
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+      "updatedAt": "2026-07-23T15:37:59.918Z"
+    }
+  }
+}
@@ -0,0 +1,114 @@
+# 文件库 · 开工计划（v1.0）
+
+> 配套文档：《文件库-接口契约.md》(v0.1，仓库根目录)。本计划已吸收规划顾问评审意见，包含开工前必须先冻结的**架构收口决策 D11–D19**（回写契约 v0.2 时并入）。
+> 工期按 1 人全栈估算；前端从 Phase 2 后可并行。
+
+## 开工判定
+
+**可以开工。** 四个外部依赖（版本包 / Group / 审计 / 平台身份）全部有契约可依、可 mock 并行开发；无阻塞项。唯一前置：本文件的 D11–D19 决策在写第一行 schema 前过一遍（半天，自查即可，有异议再升级）。
+
+## 架构收口决策（新增，先冻结再动工）
+
+| 编号 | 决策 | 理由 |
+|---|---|---|
+| D11 | `creator` 是 Node 的**不可变列**，创建时同时落一条 Manage grant；独立权限开关关闭时，**creator 的 Manage 仍生效**，其余项目级 grant 冻结不参与计算 | 否则 creator 可能被自己关掉的开关锁死 |
+| D12 | 移动节点授权 = **本节点 Manage + 目标父 Edit+**；移动在事务 + Postgres 咨询锁内完成，防并发成环 | 预检环检测在并发下不安全 |
+| D13 | Group resolve 失败返回 **503**（不伪装 404/403）；每次 HTTP 请求 fresh resolve，不跨请求缓存；单请求内多次校验合并为一次调用（此点与 Group 团队确认，OPEN-9） | 依赖故障 ≠ 无权限；契约 G4 要求实时 |
+| D14 | 命名规则：NFC 归一化、trim、≤128 字符、禁 `/` 与控制字符；**活跃兄弟节点大小写不敏感唯一**；根节点全局唯一 | 缺命名规则必有脏数据 |
+| D15 | 删除 = 只给被删节点打标，后代**不递归打标**，靠"任一祖先已删"过滤；所有查询链路强制此过滤（含递归 SQL，不只靠 Prisma middleware） | 递归打标的写放大与恢复复杂度不可控 |
+| D16 | `baseVersion` 为**文件级版本**（GET file 返回的 version）；无关文件的提交不产生冲突 | 与 C1 `head(dir, filePath)` 语义一致 |
+| D17 | breadcrumb 只暴露用户有 View 的祖先名称；无权限祖先显示占位符 `…`，不暴露名字 | 404 不泄露语义（D8）延伸到面包屑 |
+| D18 | v1 **单副本部署**（git 仓库在本地磁盘）；多副本需共享存储或分片，后置 | 不解决不存在的扩展问题 |
+| D19 | 网站管理员**不隐式读内容**；force_adjust 凭 node id 操作（id 从审计或用户上报获得） | C4 已定的最小权限原则 |
+
+## 阶段计划
+
+### Phase 0 · 骨架与身份先行（1–2 天）
+
+- [ ] 过 D11–D19，回写契约 v0.2
+- [ ] repo 骨架 `server/` + `web/`，Postgres docker-compose，CI（lint / typecheck / vitest / 集成测试用真实 Postgres service container）
+- [ ] **JWT 中间件 + 本地 JWKS 测试服务 + 签名 token fixtures**（有效/过期/错 issuer/错 audience/错算法/未知 kid/轮换）——身份先行，不做"宽松 mock 身份"
+- [ ] 4 个 port 接口定义 + mock：`VersionStore`、`GroupResolver`、`AuditSink`（直写 outbox 表的实现就是真的，mock 的是对端服务）、`ExportAdapter`
+- [ ] fastify-swagger 接入，OpenAPI 骨架——**OpenAPI 随每个端点同步产出，不留到最后**
+- **验收**：骨架可 `pnpm dev` 起服务；本地 JWKS 六类 token fixture（有效/过期/错 issuer/错 audience/错算法/未知 kid）中间件行为全对；CI 流水线绿
+
+### Phase 1 · 数据模型与权限引擎（2–3 天）⚑ 心脏
+
+- [ ] Prisma schema：`Node`（parentId **权威** + id 编码的 materialized path 派生列，name 不入 path）、`Grant`、`ProjectIndependentSettings`、`OutboxEvent`（含 attempts/nextAttemptAt/lease/lastError，relay 字段一次到位）、`ExportJob`
+- [ ] 数据库约束：kind 枚举、项目无子节点、活跃兄弟名唯一（部分唯一索引，root 的 NULL parent 特殊处理）、活跃 grant 按 (nodeId, principalType, principalId) 唯一、独立设置仅项目
+- [ ] **纯权限 reducer**：输入已解析的 grants + 祖先链 + 用户组集合，输出 role|null；不碰 DB/网络。fast-check 属性测试：max 单调、加 grant 只升不降、祖先继承、toggle 行为、顺序无关、软删过滤
+- [ ] 数据获取层 + `effective(user, node)` 组装
+- [ ] 树操作服务：create（creator 自动 Manage、root 仅管理员且必带 ≥1 Manage）、rename、move（D12 事务+咨询锁）、soft delete（D15）、breadcrumb（D17）
+- **验收**：并发对移（A→B 与 B→A）、移动+并发建子、property tests、删除祖先过滤，真实 Postgres 全绿
+
+### Phase 2 · 树与授权 API（1–2 天）
+
+- [ ] nodes 端点组 + grants 端点组 + independent-permission 开关 + effective-permission 自查
+- [ ] 授权矩阵校验（契约 8.1：creator-only 授 Manage、Manage 不可动 creator、force_adjust 独立通道）
+- [ ] 全部写操作落 outbox 事件（C3 词汇表）
+- **验收**：契约 8.1 矩阵逐格 API 测试；D8 的 404/403/503 三分语义测试
+
+### Phase 3 · 仓库生命周期与文件 API（2 天）
+
+- [ ] 项目 provisioning 状态机 `PROVISIONING → READY | FAILED`：先建 DB 行（PROVISIONING）→ 调 `VersionStore.init`（幂等）→ 置 READY；失败可重试；孤儿仓库对账 job
+- [ ] 每项目写锁（Postgres 咨询锁，跨进程安全）——不假设版本包能跨进程串行
+- [ ] 路径安全：canonical 后必须落在项目根内、拒绝 `.git`、禁 symlink 逃逸、路径长度上限
+- [ ] 上传限额（单文件 10MB / 单项目配额，数值 OPEN-5）+ 流式接收
+- [ ] files 端点组全量（list/read/upload/commits→409/diff/history/delete）+ 双客户端冲突 e2e
+- **验收**：DB/git 故障注入（init 失败、提交后崩溃）→ 对账能收敛；路径穿越语料库测试全拒
+
+### Phase 4 · 外部集成（1–2 天）
+
+- [ ] `GroupResolver` HTTP client：超时/5xx/429/畸形 JSON/万级 group 的故障注入测试；失败 → 503（D13）
+- [ ] Audit relay worker：租约领取、指数退避、eventId 幂等、重启恢复、积压告警
+- [ ] 导出 job：状态机 + 轮询 + 下载权限校验；`ExportAdapter` 桩（参数 OPEN-6 未定前**不计入完成标准**）
+- **验收**：relay 重启不丢不重（对端幂等）；group 故障时写操作 503、读操作按 D13
+
+### Phase 5 · 前端（3–5 天，Phase 2 后并行启动）
+
+- [ ] 登录（平台 SSO 占位 + 本地 JWKS 直通开关）
+- [ ] 树浏览（懒加载 + 分页）、breadcrumb（D17 占位符）、创建对话框（类型 + 批量授权选择器，Group search 接 C2）
+- [ ] 权限管理面板（按 8.1 矩阵控制可选项，creator 标识）
+- [ ] 文件页：查看/上传/下载/历史列表（编辑 UI 不归我方，留对接位）
+- [ ] 导出按钮 + job 轮询
+- **验收**：无权限节点全链路不可见；授权面板不会送出矩阵禁止的组合
+
+### Phase 6 · 硬化与交付（1–2 天）
+
+- [ ] 404/403/503 全端点核对；并发与重试幂等抽查
+- [ ] 备份脚本（DB + git 仓库一致性快照）、健康检查（DB/JWKS/磁盘/Group）、磁盘水位告警
+- [ ] OpenAPI 终稿 + 部署脚本 + 一页运维手册
+
+## 里程碑
+
+| 里程碑 | 内容 | 累计工期 |
+|---|---|---|
+| M1 | Phase 0–1：骨架 + 权限引擎 + 树操作可跑 | ~4 天 |
+| M2 | Phase 2–3：后端 API 全量（含文件冲突流） | ~7 天 |
+| M3 | Phase 4：外部集成（导出不计） | ~9 天 |
+| M4 | Phase 5–6：前端 + 硬化，可交付 | ~14–18 天 |
+
+## Mock 保真红线（mock 可以顶，但不许骗）
+
+| Mock | 不许掩盖的事 | 真身到位后的契约测试 |
+|---|---|---|
+| VersionStore | 磁盘延迟、半初始化、锁残留、跨进程并发 | 真包跑临时仓库：并发 commit/init 重试/遍历与 symlink 语料 |
+| GroupResolver | 超时、5xx、畸形响应、大规模组集 | 故障注入 HTTP 桩全过；我方绝不自己推祖先 |
+| GroupSearch（前端选择器） | 与 resolve 是**两个独立端点**，不可用 resolve mock 顶替 | C2 `/groups/search` 真身到位后跑分页/空结果/超时 |
+| Audit 对端 | 重复投递、乱序、长时间不可用 | relay 重启恢复 + 对端幂等 |
+| JWT | issuer/audience/算法/轮换 | 本地 JWKS 全用例 |
+| ExportAdapter | 参数、幂等、耗时 | 参数定了再写，之前不算完成 |
+
+## Top 5 风险
+
+1. **DB/git 分裂**（崩溃导致元数据、仓库、审计三边不一致）→ provisioning 状态机 + 对账 job，Phase 3 前置
+2. **移动子树改变整树权限** → D12 事务+锁+源目标双授权，并发测试
+3. **creator/独立权限开关交互** → D11 先冻结
+4. **外部契约缺口**（导出参数、请求内 resolve 合并）→ OPEN 清单跟踪，mock 保真红线不许掩盖
+5. **存储滥用/路径逃逸** → 路径安全 + 配额进 Phase 3 验收，不拖到硬化
+
+## OPEN 清单（在契约文档基础上增补）
+
+- OPEN-9：单请求内合并多次 resolve 是否符合 G4"实时"语义（找 Group 团队确认）
+- OPEN-10：恶意软件扫描归属（我方/平台/不做）
+- 其余 OPEN-1~8 见《文件库-接口契约.md》第 10 节
@@ -0,0 +1,12 @@
+<!doctype html>
+<html lang="zh-CN">
+  <head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <title>文件库</title>
+  </head>
+  <body>
+    <div id="app"></div>
+    <script type="module" src="/src/main.ts"></script>
+  </body>
+</html>
@@ -0,0 +1,21 @@
+{
+  "name": "filelib-web",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview",
+    "check": "svelte-check --tsconfig ./tsconfig.json"
+  },
+  "devDependencies": {
+    "@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"
+  }
+}
@@ -0,0 +1,30 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { api, UnauthenticatedError } from "./lib/api.js";
+  import { me, authChecked } from "./lib/stores.js";
+  import type { MeResponse } from "./lib/types.js";
+  import LoginView from "./lib/LoginView.svelte";
+  import BrowserShell from "./lib/BrowserShell.svelte";
+  import Toasts from "./lib/Toasts.svelte";
+
+  onMount(async () => {
+    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);
+    }
+  });
+</script>
+
+{#if !$authChecked}
+  <div class="flex h-full items-center justify-center text-ink-3">加载中…</div>
+{:else if $me}
+  <BrowserShell />
+{:else}
+  <LoginView />
+{/if}
+
+<Toasts />
@@ -0,0 +1,66 @@
+@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,
+#app {
+  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;
+}
+
+/* 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);
+}
@@ -0,0 +1,141 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { api } from "./api.js";
+  import { me, toastErr, toastOk } from "./stores.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 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));
+    }
+  }
+
+  async function logout(): Promise<void> {
+    try { await fetch("/auth/logout", { method: "POST", credentials: "same-origin" }); } catch { /* ignore */ }
+    me.set(null);
+  }
+
+  const initial = $derived(($me?.userId ?? "U").slice(0, 1).toUpperCase());
+</script>
+
+<div class="flex h-full">
+  <!-- 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 $me?.isWebsiteAdmin}
+        <button class="rounded-lg border border-line bg-panel px-2.5 py-1 text-[11.5px] font-medium text-ink transition hover:bg-hover" onclick={() => (showCreateRoot = true)}>
+          + 根目录
+        </button>
+      {/if}
+    </div>
+
+    <div class="flex-1 overflow-y-auto px-2 py-2 text-[13px]">
+      {#if roots === null}
+        <div class="px-3 py-6 text-center text-xs text-ink-3">加载中…</div>
+      {:else if treeError}
+        <div class="px-3 py-6 text-center text-xs text-danger">{treeError}</div>
+      {:else if roots.length === 0}
+        <div class="px-3 py-6 text-center text-xs text-ink-3">
+          {$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>
+
+    <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>
+  </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="mb-3">
+      <label class="mb-1 block text-[11.5px] text-ink-3" for="root-name">名称</label>
+      <input id="root-name" class="w-full rounded-lg border border-line bg-panel px-3 py-2 text-[13px] outline-none focus:border-accent" bind:value={newName} placeholder="例如:物理教研" />
+    </div>
+    <div class="mb-3">
+      <label class="mb-1 block text-[11.5px] text-ink-3" for="root-kind">类型</label>
+      <select id="root-kind" class="w-full rounded-lg border border-line bg-panel px-3 py-2 text-[13px] outline-none focus:border-accent" 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="mb-3">
+      <label class="mb-1 block text-[11.5px] text-ink-3" for="root-desc">简介(可选)</label>
+      <textarea id="root-desc" rows="3" class="w-full rounded-lg border border-line bg-panel px-3 py-2 font-mono text-xs outline-none focus:border-accent" bind:value={newDesc} placeholder="简要说明用途…"></textarea>
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="rounded-lg border border-line bg-panel px-3.5 py-1.5 text-[12.5px] font-medium text-ink transition hover:bg-hover" onclick={() => (showCreateRoot = false)}>取消</button>
+      <button class="rounded-lg bg-accent px-3.5 py-1.5 text-[12.5px] font-medium text-white transition hover:bg-accent-hover" onclick={createRoot}>创建</button>
+    </div>
+  </Modal>
+{/if}
@@ -0,0 +1,165 @@
+<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";
+
+  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="rounded-xl border border-line-soft bg-panel p-5 text-xs text-danger">{loadError}</div>
+{:else if file}
+  <div class="rounded-xl border border-line-soft bg-panel p-5">
+    <div class="mb-2.5 flex items-center justify-between">
+      <span class="font-mono text-[11px] text-ink-3">{file.path} @ {file.version}</span>
+      <div class="flex items-center gap-2">
+        <a class="rounded-lg border border-line bg-panel px-3 py-1 text-[12px] font-medium text-ink transition hover:bg-hover" href="/database/api/projects/{projectId}/file/raw?path={encodeURIComponent(file.path)}" download>下载</a>
+        <button class="rounded-lg border border-line bg-panel px-3 py-1 text-[12px] font-medium text-ink transition hover:bg-hover" onclick={openHistory}>历史</button>
+        {#if canEdit}
+          <button class="rounded-lg border border-transparent px-3 py-1 text-[12px] font-medium text-danger transition hover:bg-[#A13A3312]" onclick={remove}>删除文件</button>
+        {/if}
+        {#if onclose}
+          <button class="rounded-lg border border-line bg-panel px-2.5 py-1 text-[12px] font-medium text-ink-3 transition hover:bg-hover hover:text-ink" onclick={onclose} title="关闭预览">✕</button>
+        {/if}
+      </div>
+    </div>
+
+    {#if file.encoding === "base64"}
+      <div class="text-xs text-ink-3">二进制文件({file.size} B),不支持在线编辑</div>
+    {:else}
+      <textarea rows="14" class="w-full rounded-lg border border-line bg-panel px-3 py-2 font-mono text-xs leading-7 outline-none focus:border-accent" bind:value={draft} readonly={!canEdit}></textarea>
+    {/if}
+
+    {#if canEdit && file.encoding !== "base64"}
+      <div class="mt-3 flex justify-end">
+        <button class="rounded-lg bg-accent px-3.5 py-1.5 text-[12.5px] font-medium text-white transition hover:bg-accent-hover" 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="rounded-lg border border-line bg-panel px-3 py-1 text-[12px] font-medium text-ink transition hover:bg-hover" onclick={acceptLatest}>载入最新内容</button>
+        </div>
+      </div>
+    {/if}
+  </div>
+{:else}
+  <div class="rounded-xl border border-line-soft bg-panel p-5 text-xs text-ink-3">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="rounded-lg border border-line bg-panel px-3 py-1 text-[12px] font-medium text-ink transition hover:bg-hover" onclick={() => (showHistory = false)}>关闭</button>
+    </div>
+  </Modal>
+{/if}
@@ -0,0 +1,137 @@
+<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";
+
+  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("");
+  let uploadInput: HTMLInputElement;
+
+  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/${node.id}/file`, { method: "PUT", body });
+      toastOk("已上传 " + file.name);
+      await loadFiles();
+    } catch (err) {
+      toastErr(err instanceof Error ? err.message : String(err));
+    }
+  }
+</script>
+
+<div class="rounded-xl border border-line-soft bg-panel p-5">
+  <div class="mb-2 flex items-center justify-between">
+    <div class="text-[13px] font-semibold">项目文件({files?.length ?? 0})</div>
+    {#if canEdit}
+      <div class="flex gap-2">
+        <button class="rounded-lg border border-line bg-panel px-3 py-1.5 text-[12.5px] font-medium text-ink transition hover:bg-hover" onclick={() => (showNewFile = true)}>+ 新建文件</button>
+        <button class="rounded-lg bg-accent px-3 py-1.5 text-[12.5px] font-medium text-white transition hover:bg-accent-hover" onclick={() => uploadInput.click()}>上传文件</button>
+        <input bind:this={uploadInput} type="file" class="hidden" onchange={doUpload} />
+      </div>
+    {/if}
+  </div>
+
+  {#if files === null && loadError === null}
+    <div class="py-5 text-center text-xs text-ink-3">加载中…</div>
+  {:else if loadError}
+    <div class="py-5 text-center text-xs text-danger">{loadError}</div>
+  {:else if files && files.length === 0}
+    <div class="py-5 text-center text-xs text-ink-3">空仓库 · 可新建或上传文件</div>
+  {:else if files}
+    <table class="w-full border-collapse text-[13px]">
+      <tbody>
+        {#each files as f (f.path)}
+          <tr
+            class="cursor-pointer border-t border-line-soft first:border-t-0 {$selectedFilePath === f.path ? 'bg-selected' : 'hover:bg-hover'}"
+            onclick={() => selectedFilePath.set(f.path)}
+          >
+            <td class="py-2 font-mono text-[12.5px] text-ink">{f.path}</td>
+            <td class="py-2 text-right font-mono text-[11px] text-ink-3">{f.size} B</td>
+          </tr>
+        {/each}
+      </tbody>
+    </table>
+  {/if}
+</div>
+
+{#if showNewFile}
+  <Modal title="新建文件" onclose={() => (showNewFile = false)}>
+    <div class="mb-3">
+      <label class="mb-1 block text-[11.5px] text-ink-3" for="nf-path">路径</label>
+      <input id="nf-path" class="w-full rounded-lg border border-line bg-panel px-3 py-2 font-mono text-[13px] outline-none focus:border-accent" bind:value={newPath} placeholder="docs/intro.md" />
+    </div>
+    <div class="mb-3">
+      <label class="mb-1 block text-[11.5px] text-ink-3" for="nf-content">内容</label>
+      <textarea id="nf-content" rows="8" class="w-full rounded-lg border border-line bg-panel px-3 py-2 font-mono text-xs outline-none focus:border-accent" bind:value={newContent} placeholder="内容…"></textarea>
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="rounded-lg border border-line bg-panel px-3.5 py-1.5 text-[12.5px] font-medium text-ink transition hover:bg-hover" onclick={() => (showNewFile = false)}>取消</button>
+      <button class="rounded-lg bg-accent px-3.5 py-1.5 text-[12.5px] font-medium text-white transition hover:bg-accent-hover" onclick={submitNewFile}>创建</button>
+    </div>
+  </Modal>
+{/if}
@@ -0,0 +1,47 @@
+<script lang="ts">
+  import { onMount } from "svelte";
+  import { api } from "./api.js";
+
+  interface LoginInfo {
+    orgSlug: string;
+    devLoginEnabled: boolean;
+  }
+
+  let info = $state<LoginInfo | null>(null);
+  let loadFailed = $state(false);
+
+  onMount(async () => {
+    try {
+      info = await api<LoginInfo>("/database/api/login-info");
+    } 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)}"
+        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" 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>
@@ -0,0 +1,16 @@
+<script lang="ts">
+  import type { Snippet } from "svelte";
+
+  let { title, onclose, children }: { title: string; onclose: () => void; children: Snippet } = $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="w-full max-w-[440px] rounded-2xl border border-line-soft bg-panel p-6 shadow-[0_4px_20px_rgba(26,26,24,.07)]">
+    <div class="mb-4 text-[15px] font-semibold">{title}</div>
+    {@render children()}
+  </div>
+</div>
@@ -0,0 +1,144 @@
+<script lang="ts">
+  import { api } from "./api.js";
+  import { currentNode, breadcrumb, bumpTree, clearSelectedFile } from "./browser.js";
+  import { toastOk, toastErr } from "./stores.js";
+  import OverviewPanel from "./OverviewPanel.svelte";
+  import FilesPanel from "./FilesPanel.svelte";
+  import Modal from "./Modal.svelte";
+
+  let tab = $state<"detail" | "files">("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");
+
+  $effect(() => {
+    void node?.id;
+    tab = "detail";
+    clearSelectedFile();
+  });
+
+  async function createChild(): Promise<void> {
+    const name = newName.trim();
+    if (name === "" || node === null) return;
+    try {
+      await api("/database/api/nodes", {
+        method: "POST",
+        body: {
+          parentId: node.id,
+          kind: newKind,
+          name,
+          ...(newDesc.trim() !== "" ? { description: newDesc.trim() } : {}),
+        },
+      });
+      toastOk("已创建");
+      showCreateChild = false;
+      newName = ""; newKind = "FOLDER"; newDesc = "";
+      bumpTree();
+    } catch (e) {
+      toastErr(e instanceof Error ? e.message : String(e));
+    }
+  }
+
+  async function renameNode(): Promise<void> {
+    if (node === null) return;
+    const name = prompt("新名称", node.name);
+    if (name === null) return;
+    try {
+      await api(`/database/api/nodes/${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-[880px] 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-2.5 text-[19px] font-semibold text-ink">
+        {node.name}
+        <span class="rounded-full border border-line-soft bg-panel px-2 py-0.5 font-mono text-[10.5px] text-ink-3">{node.kind === "PROJECT" ? "项目" : "文件夹"}</span>
+      </div>
+      <div class="flex gap-2">
+        {#if canEdit && node.kind === "FOLDER"}
+          <button class="rounded-lg border border-line bg-panel px-3 py-1.5 text-[12.5px] font-medium text-ink transition hover:bg-hover" onclick={() => (showCreateChild = true)}>+ 新建</button>
+        {/if}
+        {#if canManage}
+          <button class="rounded-lg border border-line bg-panel px-3 py-1.5 text-[12.5px] font-medium text-ink transition hover:bg-hover" onclick={renameNode}>重命名</button>
+          <button class="rounded-lg border border-transparent px-3 py-1.5 text-[12.5px] font-medium text-danger transition hover:bg-[#A13A3312]" onclick={deleteNode}>删除</button>
+        {/if}
+      </div>
+    </div>
+
+    {#if node.kind === "FOLDER"}
+      <div class="py-7 text-[13px] text-ink-3">点击左侧树展开以浏览子内容</div>
+    {:else}
+      <div class="mb-5 flex gap-1 border-b border-line-soft">
+        {#each [["detail", "概览"], ["files", "文件"]] as [id, label] (id)}
+          <button
+            class="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 as "detail" | "files")}
+          >{label}</button>
+        {/each}
+      </div>
+      {#if tab === "detail"}
+        <OverviewPanel {node} />
+      {:else}
+        <FilesPanel {node} />
+      {/if}
+    {/if}
+  </div>
+{/if}
+
+{#if showCreateChild && node}
+  <Modal title="新建子节点" onclose={() => (showCreateChild = false)}>
+    <div class="mb-3">
+      <label class="mb-1 block text-[11.5px] text-ink-3" for="child-name">名称</label>
+      <input id="child-name" class="w-full rounded-lg border border-line bg-panel px-3 py-2 text-[13px] outline-none focus:border-accent" bind:value={newName} placeholder="例如:物理必修一" />
+    </div>
+    <div class="mb-3">
+      <label class="mb-1 block text-[11.5px] text-ink-3" for="child-kind">类型</label>
+      <select id="child-kind" class="w-full rounded-lg border border-line bg-panel px-3 py-2 text-[13px] outline-none focus:border-accent" 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="mb-3">
+      <label class="mb-1 block text-[11.5px] text-ink-3" for="child-desc">简介(可选)</label>
+      <textarea id="child-desc" rows="3" class="w-full rounded-lg border border-line bg-panel px-3 py-2 font-mono text-xs outline-none focus:border-accent" bind:value={newDesc} placeholder="简要说明用途…"></textarea>
+    </div>
+    <div class="mt-4 flex justify-end gap-2">
+      <button class="rounded-lg border border-line bg-panel px-3.5 py-1.5 text-[12.5px] font-medium text-ink transition hover:bg-hover" onclick={() => (showCreateChild = false)}>取消</button>
+      <button class="rounded-lg bg-accent px-3.5 py-1.5 text-[12.5px] font-medium text-white transition hover:bg-accent-hover" onclick={createChild}>创建</button>
+    </div>
+  </Modal>
+{/if}
@@ -0,0 +1,123 @@
+<script lang="ts">
+  import { api } from "./api.js";
+  import { toastOk, toastErr } from "./stores.js";
+  import { currentNode } from "./browser.js";
+  import type { ExportJob, NodeDetail } from "./types.js";
+  import Modal from "./Modal.svelte";
+
+  let { node }: { node: NodeDetail } = $props();
+
+  let showEditDesc = $state(false);
+  let descDraft = $state("");
+  let exportJob = $state<ExportJob | null>(null);
+
+  const canEdit = $derived(node.role === "MANAGE" || node.role === "EDIT");
+  const roleLabel = $derived(node.role === "MANAGE" ? "可管理" : node.role === "EDIT" ? "可编辑" : "只读");
+
+  $effect(() => {
+    void node.id;
+    exportJob = null;
+  });
+
+  function openEditDesc(): void {
+    descDraft = node.description ?? "";
+    showEditDesc = true;
+  }
+
+  async function saveDesc(): Promise<void> {
+    const description = descDraft.trim();
+    try {
+      await api(`/database/api/nodes/${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="rounded-xl border border-line-soft bg-panel p-5">
+  <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="ml-2.5 rounded-lg border border-line bg-panel px-2.5 py-0.5 align-middle text-[11.5px] text-ink transition hover:bg-hover" 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>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).toLocaleDateString("zh-CN", { year: "numeric", month: "long", day: "numeric" })}</b></div>
+    <div>最近修改 <b class="font-semibold text-ink">{new Date(node.updatedAt).toLocaleDateString("zh-CN", { year: "numeric", month: "long", day: "numeric" })}</b></div>
+  </div>
+
+  <div class="my-4 border-t border-line-soft"></div>
+
+  <div class="mb-2 text-[12.5px] font-semibold">导出</div>
+  <div class="flex items-center gap-2">
+    <button class="rounded-lg border border-line bg-panel px-3 py-1.5 text-[12.5px] font-medium text-ink transition hover:bg-hover" onclick={submitExport}>开始导出</button>
+    {#if exportJob}
+      <span class="font-mono text-[11px] text-ink-3">
+        {#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>
+</div>
+
+{#if showEditDesc}
+  <Modal title="编辑简介" onclose={() => (showEditDesc = false)}>
+    <div class="mb-3">
+      <label class="mb-1 block text-[11.5px] text-ink-3" for="desc-draft">简要说明这个项目的内容</label>
+      <textarea id="desc-draft" rows="5" class="w-full rounded-lg border border-line bg-panel px-3 py-2 text-[13px] leading-7 outline-none focus:border-accent" 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="rounded-lg border border-line bg-panel px-3.5 py-1.5 text-[12.5px] font-medium text-ink transition hover:bg-hover" onclick={() => (showEditDesc = false)}>取消</button>
+      <button class="rounded-lg bg-accent px-3.5 py-1.5 text-[12.5px] font-medium text-white transition hover:bg-accent-hover" onclick={saveDesc}>保存</button>
+    </div>
+  </Modal>
+{/if}
@@ -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>
@@ -0,0 +1,82 @@
+<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 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 font-mono text-[10px] text-ink-3">{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>
@@ -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;
+}
@@ -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;
+  });
+}
@@ -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");
@@ -0,0 +1,85 @@
+/** 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;
+}
+
+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 independentPermission: boolean;
+  readonly createdAt: string;
+  readonly updatedAt: string;
+}
+
+export interface MeResponse {
+  readonly userId: string;
+  readonly isWebsiteAdmin: boolean;
+}
+
+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 Grant {
+  readonly id: string;
+  readonly principalType: "USER" | "GROUP";
+  readonly principalId: string;
+  readonly role: Role;
+  readonly isCreatorGrant: boolean;
+  readonly createdAt: string;
+}
+
+export interface GroupSearchResult {
+  readonly id: string;
+  readonly name: string;
+  readonly breadcrumb: string;
+}
@@ -0,0 +1,5 @@
+import { mount } from "svelte";
+import App from "./App.svelte";
+import "./app.css";
+
+export default mount(App, { target: document.getElementById("app")! });
@@ -0,0 +1,17 @@
+{
+  "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"]
+  },
+  "include": ["src/**/*.ts", "src/**/*.svelte"]
+}
@@ -0,0 +1,25 @@
+import { defineConfig } from "vite";
+import { svelte } from "@sveltejs/vite-plugin-svelte";
+import tailwindcss from "@tailwindcss/vite";
+
+// 老师端独立 SPA:构建产物由 hub 后端静态托管于 /app;
+// 开发时 vite dev(:5173)把 API/认证请求代理到后端(:8788)。
+const backend = "http://127.0.0.1:8788";
+
+export default defineConfig({
+  plugins: [svelte(), tailwindcss()],
+  base: "/app/",
+  build: {
+    outDir: "dist",
+    emptyOutDir: true,
+  },
+  server: {
+    port: 5173,
+    proxy: {
+      "/database/api": backend,
+      "/auth": backend,
+      "/app/dev-login": backend,
+      "/app/dev-login-teacher": backend,
+    },
+  },
+});
@@ -13,6 +13,7 @@
        "@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",
@@ -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"
      }
@@ -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",
@@ -33,7 +34,7 @@
  "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"
  }
 }
@@ -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;
@@ -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;
@@ -50,6 +50,7 @@ model Organization {
  projectGroupBindings         ProjectGroupBinding[]
  auditEntries                 AuditEntry[]                             @relation("organizationAudit")
  projectSearchDocuments       ProjectSearchDocument[]
+  fileLibNodes                 FileLibNode[]

  @@index([status])
 }
@@ -923,3 +924,127 @@ 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])
+}
@@ -58,12 +58,56 @@ allowDevLoginBypass = (NODE_ENV !== "production") && HUB_DEV_LOGIN_BYPASS 为真
 | 文件 | 职责 |
 |------|------|
 | `plugin.ts` | 模块对外入口，`hub.ts` 调 `registerDatabasePlugin()` |
-| `routes/databaseRoutes.ts` | 路由 + 页面渲染，**你主要在这里加内容** |
+| `routes/databaseRoutes.ts` | 登录页/dashboard + 各子路由装配点 |
+| `routes/filelibRoutes.ts` | 文件库 树/授权/搜索 API |
+| `routes/fileRoutes.ts` | 文件库 文件内容/导出 API |
+| `routes/libraryPage.ts` | `/database/library` 文件库浏览页 |
+| `filelib/` | 文件库领域层(见下) |

 新增一类端点时：要么直接往 `databaseRoutes.ts` 加 `app.get("/database/...")`，
 要么新建 `routes/xxxRoutes.ts` 并在 `databaseRoutes.ts` 里 `registerXxxRoutes(app, {...})`
 注册一次。

+## 文件库(filelib/)
+
+独立文件库模块,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 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 + Team 过渡实现 |
+| `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` — Group 团队服务地址(C2);未配置时读 hub Team(扁平)
+
+> ⚠️ 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。
@@ -0,0 +1,72 @@
+/**
+ * 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",
+  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",
+} as const;
+
+export type FileLibAuditObjectType = "folder" | "project" | "file" | "grant" | "export_job";
+
+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,
+    },
+  });
+}
@@ -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,
+  };
+}
@@ -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 });
+}
@@ -0,0 +1,319 @@
+/**
+ * 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;
+  readonly role: FileLibRole;
+  readonly isCreatorGrant: boolean;
+  readonly createdAt: Date;
+}
+
+function toDto(grant: FileLibGrant): GrantDto {
+  return {
+    id: grant.id,
+    principalType: grant.principalType,
+    principalId: grant.principalId,
+    role: grant.role,
+    isCreatorGrant: grant.isCreatorGrant,
+    createdAt: grant.createdAt,
+  };
+}
+
+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.$transaction(async (inner) => requireAccessInTx(inner, deps, actor, nodeId, "MANAGE"));
+}
+
+/** 列出节点活跃授权(需 MANAGE)。 */
+export async function listGrants(
+  deps: Deps,
+  actor: FileLibActor,
+  nodeId: string,
+): Promise<readonly GrantDto[]> {
+  await requireManage(deps, actor, nodeId);
+  const grants = await deps.prisma.fileLibGrant.findMany({
+    where: { organizationId: deps.organizationId, nodeId, revokedAt: null },
+    orderBy: [{ isCreatorGrant: "desc" }, { createdAt: "asc" }],
+  });
+  return grants.map(toDto);
+}
+
+export interface PutGrantsResult {
+  readonly granted: number;
+  readonly updated: number;
+  readonly grants: readonly GrantDto[];
+}
+
+/**
+ * 批量授予/修改(upsert 语义):同 principal 已有活跃授权 → 改级别(permission.update);
+ * 没有 → 新建(permission.grant)。8.1 矩阵在写之前整体校验。
+ */
+export async function putGrants(
+  deps: Deps,
+  actor: FileLibActor,
+  nodeId: string,
+  items: readonly InitialGrant[],
+): Promise<PutGrantsResult> {
+  validateGrantItems(items);
+  return deps.prisma.$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: 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: grants.map(toDto) };
+  });
+}
+
+/** 项目独立权限开关(P5/D11):需 MANAGE;状态不变则空操作。 */
+export async function setIndependentPermission(
+  deps: Deps,
+  actor: FileLibActor,
+  nodeId: string,
+  enabled: boolean,
+): Promise<{ readonly enabled: boolean }> {
+  return deps.prisma.$transaction(async (tx) => {
+    const { node } = await requireManage(deps, actor, nodeId, tx);
+    if (node.kind !== "PROJECT") {
+      throw new FileLibError(400, "invalid_node_kind", "independent permission applies to projects only");
+    }
+    const current = await tx.fileLibProjectSettings.findUnique({
+      where: { nodeId: node.id },
+      select: { independentPermissionsEnabled: true },
+    });
+    if ((current?.independentPermissionsEnabled ?? false) === enabled) {
+      return { enabled }; // 状态未变:空操作,不产生审计
+    }
+    await tx.fileLibProjectSettings.upsert({
+      where: { nodeId: node.id },
+      update: { independentPermissionsEnabled: enabled },
+      create: { nodeId: node.id, independentPermissionsEnabled: enabled },
+    });
+    await writeFileLibAudit(tx, {
+      action: enabled
+        ? FILE_LIB_AUDIT_ACTIONS.independentEnable
+        : FILE_LIB_AUDIT_ACTIONS.independentDisable,
+      actorUserId: actor.userId,
+      organizationId: deps.organizationId,
+      objectType: "project",
+      objectId: node.id,
+      objectPath: node.pathIds,
+      detail: { enabled },
+    });
+    return { enabled };
+  });
+}
+
+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,
+  });
+}
@@ -0,0 +1,48 @@
+/**
+ * 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)"。
+ * Group 系统(需求系统二:全局、无限嵌套)由别的团队交付;调用方只依赖此
+ * port,真身到位后替换实现,不换调用点。
+ */
+
+import type { PrismaClient } from "@prisma/client";
+
+export interface GroupResolver {
+  resolveMemberGroupIds(userId: string): Promise<readonly string[]>;
+}
+
+/**
+ * 过渡实现:读 hub 既有 Team(org 内、扁平无嵌套 → "祖先即自身")。
+ * 需求 3.2 的祖先递归语义在嵌套 Group 落地前无从谈起;此实现保证权限引擎
+ * 的 Group 通路今天就是真的,而不是 mock。
+ */
+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] ?? [];
+    },
+  };
+}
@@ -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[];
+    },
+  };
+}
@@ -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),
+  };
+}
@@ -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();
+}
@@ -0,0 +1,74 @@
+/**
+ * 纯权限 reducer(契约 P6 / D11 / 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[];
+  /** 项目独立权限开关(D11/P5);文件夹忽略此值。 */
+  readonly independentPermissionsEnabled: boolean;
+  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。
+ *
+ * D11:目标为 PROJECT 且独立权限关闭时,项目级(挂在 self 上)非创建者 grant
+ * 冻结不参与计算;创建者的自动 grant(isCreatorGrant)始终生效。祖先链上的
+ * grant 不受开关影响。
+ */
+export function effectiveRole(input: EffectiveRoleInput): FileLibRole | null {
+  const onChain = new Set<string>([input.nodeId, ...input.ancestorIds]);
+  const groups = new Set(input.groupIds);
+  const freezeProjectGrants =
+    input.nodeKind === "PROJECT" && !input.independentPermissionsEnabled;
+
+  let best: FileLibRole | null = null;
+  for (const grant of input.grants) {
+    if (!onChain.has(grant.nodeId)) continue;
+    if (freezeProjectGrants && grant.nodeId === input.nodeId && !grant.isCreatorGrant) 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 };
+}
@@ -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;
+}
@@ -0,0 +1,598 @@
+/**
+ * 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、toggle 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 },
+  });
+  let independentPermissionsEnabled = false;
+  if (chain.node.kind === "PROJECT") {
+    const settings = await tx.fileLibProjectSettings.findUnique({
+      where: { nodeId: chain.node.id },
+      select: { independentPermissionsEnabled: true },
+    });
+    independentPermissionsEnabled = settings?.independentPermissionsEnabled ?? false;
+  }
+  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),
+    independentPermissionsEnabled,
+    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,
+        },
+      });
+    }
+    if (input.kind === "PROJECT") {
+      await tx.fileLibProjectSettings.create({
+        data: { nodeId: id, independentPermissionsEnabled: false },
+      });
+    }
+
+    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.$transaction(async (tx) => {
+    const chain = await loadVisibleChain(tx, deps.organizationId, nodeId);
+    const role = await resolveRole(tx, deps, actor, chain);
+    if (role === null) throw new FileLibError(404, "node_not_found", "node not found");
+    return role;
+  });
+}
+
+export interface BreadcrumbEntry {
+  readonly depth: number;
+  /** D17:无 View 的祖先 id/name 都为 null(不泄露)。 */
+  readonly id: string | null;
+  readonly name: string | null;
+  readonly kind: "FOLDER" | "PROJECT";
+}
+
+/** D17 面包屑:需 self VIEW;链上每个节点单独算权限,无 View 只留占位。 */
+export async function breadcrumb(
+  deps: TreeServiceDeps,
+  actor: FileLibActor,
+  nodeId: string,
+): Promise<readonly BreadcrumbEntry[]> {
+  return deps.prisma.$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 },
+    });
+    const settings = chain.node.kind === "PROJECT"
+      ? await tx.fileLibProjectSettings.findUnique({
+          where: { nodeId: chain.node.id },
+          select: { independentPermissionsEnabled: true },
+        })
+      : null;
+
+    return chainNodes.map((current, depth) => {
+      const role = effectiveRole({
+        nodeId: current.id,
+        nodeKind: current.kind,
+        ancestorIds: chainNodes.slice(0, depth).map((n) => n.id),
+        independentPermissionsEnabled:
+          current.id === chain.node.id ? settings?.independentPermissionsEnabled ?? false : false,
+        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,
+      };
+    });
+  });
+}
+
+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 projectIds = children.filter((c) => c.kind === "PROJECT").map((c) => c.id);
+    const settingsRows = projectIds.length === 0
+      ? []
+      : await tx.fileLibProjectSettings.findMany({
+          where: { nodeId: { in: projectIds } },
+          select: { nodeId: true, independentPermissionsEnabled: true },
+        });
+    const toggleByNode = new Map(settingsRows.map((s) => [s.nodeId, s.independentPermissionsEnabled]));
+    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,
+        independentPermissionsEnabled: toggleByNode.get(child.id) ?? false,
+        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 },
+    });
+  });
+}
@@ -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 ${filePath}`,
+          author: undefined,
+          committedAt: new Date().toISOString(),
+          deleted: true,
+        });
+        repo.files.set(filePath, chain);
+        savePersisted();
+        return { status: "ok", version };
+      });
+    },
+
+    async diff(projectDir, filePath, from, to) {
+      const repo = requireRepo(projectDir);
+      const a = findVersion(repo, filePath, from);
+      const b = findVersion(repo, filePath, to);
+      return naiveDiff(a.content.toString("utf8"), b.content.toString("utf8"));
+    },
+
+    async history(projectDir, filePath, limit) {
+      const repo = requireRepo(projectDir);
+      const chain = repo.files.get(filePath) ?? [];
+      const infos: VersionInfo[] = chain.map((v) => ({
+        version: v.version,
+        message: v.message,
+        author: v.author,
+        committedAt: v.committedAt,
+      }));
+      const ordered = infos.reverse();
+      return limit !== undefined ? ordered.slice(0, limit) : ordered;
+    },
+  };
+}
@@ -0,0 +1,227 @@
+/**
+ * 管理员后台「用户管理」「Group 管理」面板(复用 hub 已有 org 管理 API)。
+ *
+ * 用户管理 = org 成员(/api/org/:orgSlug/members);
+ * Group 管理 = Team(当前 Group 的过渡实现,/api/org/:orgSlug/teams),
+ * 真 Group 系统落地后此面板改接新 API 即可,文件库授权侧不动。
+ */
+
+function apiBase(orgSlug: string): string {
+  return `/api/org/${encodeURIComponent(orgSlug)}`;
+}
+
+/* ---------------------------------------------------------------- 用户管理 */
+
+export function renderUsersPanel(orgSlug: string): string {
+  return `
+<div id="users-root" style="max-width:880px">
+  <div class="panel" style="margin-bottom:14px">
+    <div class="section-title">添加成员</div>
+    <div class="inline-form">
+      <input id="u-openid" class="input" placeholder="用户 openId(飞书 ou_ 开头)" style="flex:2"/>
+      <input id="u-name" class="input" placeholder="显示名(可选)" style="flex:1"/>
+      <select id="u-role" class="select" style="width:130px">
+        <option value="MEMBER">普通老师</option>
+        <option value="ADMIN">管理员</option>
+        <option value="OWNER">所有者</option>
+      </select>
+      <button id="u-add" class="btn btn-primary">添加</button>
+    </div>
+  </div>
+  <div class="panel">
+    <div class="section-title">成员列表</div>
+    <table class="list">
+      <thead><tr><th>成员</th><th>userId</th><th>角色</th><th></th></tr></thead>
+      <tbody id="u-tbody"></tbody>
+    </table>
+  </div>
+</div>
+<script>
+(function () {
+  const BASE = "${apiBase(orgSlug)}";
+  const tbody = document.getElementById("u-tbody");
+  const esc = (s) => String(s).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;");
+  const ROLE_LABEL = { OWNER: "所有者", ADMIN: "管理员", MEMBER: "普通老师" };
+  async function req(path, opts = {}) {
+    const res = await fetch(BASE + path, {
+      credentials: "same-origin",
+      headers: opts.body ? { "Content-Type": "application/json" } : undefined,
+      method: opts.method ?? "GET",
+      body: opts.body ? JSON.stringify(opts.body) : undefined,
+    });
+    if (res.status === 401) { location.href = "/database/admin"; throw new Error("unauthenticated"); }
+    const text = await res.text();
+    const data = text ? JSON.parse(text) : null;
+    if (!res.ok) throw new Error((data && data.error && data.error.message) || res.statusText);
+    return data;
+  }
+  async function load() {
+    const { members } = await req("/members");
+    tbody.innerHTML = members.length === 0
+      ? '<tr><td colspan="4" class="quiet" style="text-align:center;padding:18px">暂无成员</td></tr>'
+      : members.map((m) =>
+        "<tr>" +
+          "<td>" + esc(m.displayName || m.userId) + "</td>" +
+          '<td class="file-meta">' + esc(m.userId) + "</td>" +
+          '<td><select class="select" style="width:110px;padding:3px 8px;font-size:12px" data-user="' + esc(m.userId) + '">' +
+            ["OWNER","ADMIN","MEMBER"].map((r) =>
+              '<option value="' + r + '"' + (m.role === r ? " selected" : "") + ">" + ROLE_LABEL[r] + "</option>").join("") +
+          "</select></td>" +
+          '<td style="text-align:right"><button class="link-danger" data-revoke="' + esc(m.userId) + '">移除</button></td>' +
+        "</tr>").join("");
+    tbody.querySelectorAll("select[data-user]").forEach((sel) => {
+      sel.onchange = async () => {
+        try { await req("/members/" + encodeURIComponent(sel.dataset.user), { method: "PATCH", body: { role: sel.value } }); }
+        catch (e) { alert(e.message); load(); }
+      };
+    });
+    tbody.querySelectorAll("button[data-revoke]").forEach((btn) => {
+      btn.onclick = async () => {
+        if (!confirm("移除该成员?")) return;
+        try { await req("/members/" + encodeURIComponent(btn.dataset.revoke) + "/revoke", { method: "POST" }); load(); }
+        catch (e) { alert(e.message); }
+      };
+    });
+  }
+  document.getElementById("u-add").onclick = async () => {
+    const openId = document.getElementById("u-openid").value.trim();
+    if (!openId) return alert("请填写用户 openId");
+    const displayName = document.getElementById("u-name").value.trim();
+    try {
+      await req("/members", { method: "POST", body: {
+        feishuOpenId: openId,
+        role: document.getElementById("u-role").value,
+        ...(displayName ? { displayName } : {}),
+      }});
+      document.getElementById("u-openid").value = "";
+      document.getElementById("u-name").value = "";
+      load();
+    } catch (e) { alert(e.message); }
+  };
+  load().catch((e) => { tbody.innerHTML = '<tr><td colspan="4" style="color:var(--danger);padding:12px">' + esc(e.message) + "</td></tr>"; });
+})();
+</script>`;
+}
+
+/* ---------------------------------------------------------------- Group 管理 */
+
+export function renderGroupsPanel(orgSlug: string): string {
+  return `
+<div id="groups-root" style="display:flex;gap:14px;align-items:flex-start">
+  <div style="width:340px;flex-shrink:0">
+    <div class="panel" style="margin-bottom:14px">
+      <div class="section-title">新建 Group</div>
+      <div class="form-row"><label class="form-label">标识(slug)</label><input id="g-slug" class="input" placeholder="physics-dept"/></div>
+      <div class="form-row"><label class="form-label">名称</label><input id="g-name" class="input" placeholder="物理教研组"/></div>
+      <div class="form-row"><label class="form-label">描述(可选)</label><input id="g-desc" class="input" placeholder="一句话说明"/></div>
+      <div style="text-align:right"><button id="g-create" class="btn btn-primary">创建</button></div>
+    </div>
+    <div class="panel">
+      <div class="section-title">Group 列表</div>
+      <div id="g-list"></div>
+    </div>
+  </div>
+  <div class="panel" style="flex:1;min-height:200px">
+    <div id="g-detail" class="quiet" style="padding:18px;text-align:center">从左侧选择一个 Group 查看成员</div>
+  </div>
+</div>
+<script>
+(function () {
+  const BASE = "${apiBase(orgSlug)}";
+  const listEl = document.getElementById("g-list");
+  const detailEl = document.getElementById("g-detail");
+  const esc = (s) => String(s).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;");
+  let selected = null;
+  async function req(path, opts = {}) {
+    const res = await fetch(BASE + path, {
+      credentials: "same-origin",
+      headers: opts.body ? { "Content-Type": "application/json" } : undefined,
+      method: opts.method ?? "GET",
+      body: opts.body ? JSON.stringify(opts.body) : undefined,
+    });
+    if (res.status === 401) { location.href = "/database/admin"; throw new Error("unauthenticated"); }
+    const text = await res.text();
+    const data = text ? JSON.parse(text) : null;
+    if (!res.ok) throw new Error((data && data.error && data.error.message) || res.statusText);
+    return data;
+  }
+  async function loadList() {
+    const { teams } = await req("/teams");
+    listEl.innerHTML = teams.length === 0
+      ? '<div class="quiet" style="text-align:center;padding:12px">暂无 Group</div>'
+      : teams.map((t) =>
+        '<div class="g-team" data-id="' + esc(t.id) + '" data-name="' + esc(t.name) + '" style="display:flex;align-items:center;gap:8px;padding:8px 6px;border-radius:8px;cursor:pointer">' +
+          '<span style="flex:1"><b>' + esc(t.name) + '</b> <span class="file-meta">' + esc(t.slug) + "</span></span>" +
+          '<button class="link-danger" data-archive="' + esc(t.id) + '" style="font-size:11px">归档</button>' +
+        "</div>").join("");
+    listEl.querySelectorAll(".g-team").forEach((el) => {
+      el.onclick = (e) => {
+        if (e.target.closest("button")) return;
+        selected = { id: el.dataset.id, name: el.dataset.name };
+        listEl.querySelectorAll(".g-team").forEach((x) => x.style.background = "");
+        el.style.background = "var(--selected)";
+        loadMembers();
+      };
+    });
+    listEl.querySelectorAll("button[data-archive]").forEach((btn) => {
+      btn.onclick = async () => {
+        if (!confirm("归档该 Group?其成员授权将失效。")) return;
+        try { await req("/teams/" + encodeURIComponent(btn.dataset.archive) + "/archive", { method: "POST" }); selected = null; detailEl.innerHTML = '<div class="quiet" style="padding:18px;text-align:center">从左侧选择一个 Group 查看成员</div>'; loadList(); }
+        catch (e) { alert(e.message); }
+      };
+    });
+  }
+  async function loadMembers() {
+    if (!selected) return;
+    detailEl.innerHTML = '<div class="quiet" style="padding:12px;text-align:center">加载中…</div>';
+    const { members } = await req("/teams/" + encodeURIComponent(selected.id) + "/members");
+    detailEl.innerHTML =
+      '<div class="section-title">' + esc(selected.name) + " · 成员(" + members.length + ")</div>" +
+      '<table class="list"><tbody>' +
+        (members.length === 0
+          ? '<tr><td class="quiet" style="text-align:center;padding:14px">暂无成员</td></tr>'
+          : members.map((m) =>
+            "<tr><td>" + esc(m.displayName || m.userId) + '</td><td class="file-meta">' + esc(m.userId) + "</td>" +
+            '<td style="text-align:right"><button class="link-danger" data-revoke="' + esc(m.userId) + '">移除</button></td></tr>').join("")) +
+      "</tbody></table>" +
+      '<div class="divider"></div>' +
+      '<div class="section-title">添加成员</div>' +
+      '<div class="inline-form">' +
+        '<input id="g-add-openid" class="input" placeholder="用户 openId 或 userId"/>' +
+        '<button id="g-add" class="btn btn-primary">添加</button>' +
+      "</div>";
+    detailEl.querySelectorAll("button[data-revoke]").forEach((btn) => {
+      btn.onclick = async () => {
+        try { await req("/teams/" + encodeURIComponent(selected.id) + "/members/" + encodeURIComponent(btn.dataset.revoke) + "/revoke", { method: "POST" }); loadMembers(); }
+        catch (e) { alert(e.message); }
+      };
+    });
+    detailEl.querySelector("#g-add").onclick = async () => {
+      const v = detailEl.querySelector("#g-add-openid").value.trim();
+      if (!v) return alert("请填写用户 id");
+      try {
+        await req("/teams/" + encodeURIComponent(selected.id) + "/members", {
+          method: "POST",
+          body: v.startsWith("ou_") ? { feishuOpenId: v } : { userId: v },
+        });
+        loadMembers();
+      } catch (e) { alert(e.message); }
+    };
+  }
+  document.getElementById("g-create").onclick = async () => {
+    const slug = document.getElementById("g-slug").value.trim();
+    const name = document.getElementById("g-name").value.trim();
+    const description = document.getElementById("g-desc").value.trim();
+    if (!slug || !name) return alert("slug 和名称必填");
+    try {
+      await req("/teams", { method: "POST", body: { slug, name, ...(description ? { description } : {}) } });
+      document.getElementById("g-slug").value = "";
+      document.getElementById("g-name").value = "";
+      document.getElementById("g-desc").value = "";
+      loadList();
+    } catch (e) { alert(e.message); }
+  };
+  loadList().catch((e) => { listEl.innerHTML = '<div style="color:var(--danger);padding:12px">' + esc(e.message) + "</div>"; });
+})();
+</script>`;
+}
@@ -15,7 +15,20 @@
 */
 import type { FastifyInstance } from "fastify";
 import type { PrismaClient } from "@prisma/client";
+import path from "node:path";
 import { SESSION_COOKIE_NAME, signSession, verifySession } from "../../admin/auth/session.js";
+import { registerFileLibRoutes } from "./filelibRoutes.js";
+import { registerFileRoutes } from "./fileRoutes.js";
+import { registerTeacherApp } from "./teacherApp.js";
+import { renderLibraryBrowser } from "./libraryBrowser.js";
+import { renderGroupsPanel, renderUsersPanel } from "./adminPanels.js";
+import { createInMemoryVersionStore } from "../filelib/versionStore.js";
+import { createTeamGroupResolver } from "../filelib/groupResolver.js";
+import { createHttpGroupResolver } from "../filelib/groupResolverHttp.js";
+import { createManifestStubAdapter } from "../filelib/exportService.js";
+import { FILE_LIB_AUDIT_ACTIONS } from "../filelib/audit.js";
+import { UI_HEAD_FONTS, UI_THEME_CSS } from "./uiTheme.js";
+import type { FileLibRouteDeps } from "../filelib/routeShared.js";

 export interface DatabaseRouteConfig {
  readonly prisma: PrismaClient;
@@ -31,6 +44,9 @@ export async function registerDatabaseRoutes(
  app: FastifyInstance,
  config: DatabaseRouteConfig,
 ): Promise<void> {
+  // 文件库依赖在下方装配;概览页统计在请求时经此引用读取(请求一定晚于装配完成)。
+  let filelibDepsForStats: FileLibRouteDeps | null = null;
+
  app.get("/database/admin", async (request, reply) => {
    // Already signed in → straight to the dashboard.
    if ((await resolveUser(request.cookies[SESSION_COOKIE_NAME], config)) !== null) {
@@ -42,7 +58,8 @@ export async function registerDatabaseRoutes(
  app.get("/database/dashboard", async (request, reply) => {
    const user = await resolveUser(request.cookies[SESSION_COOKIE_NAME], config);
    if (user === null) return reply.redirect("/database/admin");
-    return reply.type("text/html").send(renderDashboard(user.displayName));
+    const stats = await loadDashboardStats(config.prisma, filelibDepsForStats);
+    return reply.type("text/html").send(renderDashboard(user.displayName, stats, config.siloOrganizationSlug));
  });

  // DEV ONLY bypass — self-contained here, registered only when the flag is on
@@ -96,9 +113,116 @@ export async function registerDatabaseRoutes(
    });
  }

-  // Add more /database/* routes here. Guard data routes with requireSession /
-  // requireOrgRole (../../admin/auth/guards.js) and scope every query to the
-  // caller's org (ADR-0020). Access the DB via config.prisma.
+  // 文件库(独立模块,《文件库-接口契约.md》):API + 浏览页 + 老师端 /app。
+  // 依赖装配:VersionStore 当前为内存+快照实现(版本团队 npm 包到位后替换);
+  // GroupResolver 默认读 hub Team,HUB_GROUP_SERVICE_URL 配置后切 HTTP(C2);
+  // 导出适配器当前为 manifest stub(OPEN-6,真导出工具到位后替换)。
+  const siloOrg = await config.prisma.organization.findUnique({
+    where: { slug: config.siloOrganizationSlug },
+    select: { id: true },
+  });
+  if (siloOrg === null) {
+    app.log.warn({ slug: config.siloOrganizationSlug }, "filelib: silo organization not found, routes not registered");
+    return;
+  }
+  const storageRoot = process.env["HUB_FILELIB_STORAGE_ROOT"] ?? path.resolve(".filelib-repos");
+  const versionStore = createInMemoryVersionStore(path.join(storageRoot, ".version-store.json"));
+  const groupServiceUrl = process.env["HUB_GROUP_SERVICE_URL"];
+  const filelibDeps: FileLibRouteDeps = {
+    prisma: config.prisma,
+    sessionSecret: config.sessionSecret,
+    organizationId: siloOrg.id,
+    storageRoot,
+    groupResolver: groupServiceUrl === undefined || groupServiceUrl.trim() === ""
+      ? createTeamGroupResolver(config.prisma, siloOrg.id)
+      : createHttpGroupResolver({ baseUrl: groupServiceUrl }),
+    versionStore,
+    exportAdapters: [createManifestStubAdapter(versionStore)],
+  };
+  await registerFileLibRoutes(app, filelibDeps);
+  await registerFileRoutes(app, filelibDeps);
+  await registerTeacherApp(app, {
+    prisma: config.prisma,
+    sessionSecret: config.sessionSecret,
+    siloOrganizationSlug: config.siloOrganizationSlug,
+    allowDevLoginBypass: config.allowDevLoginBypass,
+  });
+
+  // 独立文件库页已并入后台「文件库」tab(/database/dashboard#library),旧地址跳转保留兼容。
+  app.get("/database/library", async (_request, reply) =>
+    reply.redirect("/database/dashboard#library"),
+  );
+
+  filelibDepsForStats = filelibDeps;
+}
+
+/* ------------------------------------------------------------ 概览页统计 */
+
+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;
+    readonly when: Date;
+  }>;
+}
+
+/** 概览页统计:org 范围内的文件夹/项目/授权(DB)+ 文件(版本库)+ 最近活动(AuditEntry)。 */
+async function loadDashboardStats(
+  prisma: PrismaClient,
+  deps: FileLibRouteDeps | null,
+): Promise<DashboardStats | null> {
+  if (deps === null) return null;
+  const organizationId = deps.organizationId;
+  const [folders, projects, grants] = await Promise.all([
+    prisma.fileLibNode.count({ where: { organizationId, kind: "FOLDER", deletedAt: null } }),
+    prisma.fileLibNode.count({ where: { organizationId, kind: "PROJECT", deletedAt: null } }),
+    prisma.fileLibGrant.count({ where: { organizationId, revokedAt: null } }),
+  ]);
+  // 文件计数:遍历 READY 项目问版本库(demo 规模;真版本包到位后应换成存储侧统计)
+  const readyProjects = await prisma.fileLibNode.findMany({
+    where: {
+      organizationId, kind: "PROJECT", deletedAt: null,
+      provisionStatus: "READY", storageDir: { not: null },
+    },
+    select: { storageDir: true },
+  });
+  let files = 0;
+  for (const project of readyProjects) {
+    if (project.storageDir === null) continue;
+    try {
+      files += (await deps.versionStore.list(project.storageDir)).length;
+    } catch { /* repo 缺失(如重启未恢复)不计 */ }
+  }
+  const entries = await prisma.auditEntry.findMany({
+    where: { organizationId, action: { in: Object.values(FILE_LIB_AUDIT_ACTIONS) } },
+    orderBy: { createdAt: "desc" },
+    take: 8,
+  });
+  const actorIds = [...new Set(entries.map((e) => e.actorUserId).filter((x): x is string => x !== null))];
+  const users = actorIds.length === 0
+    ? []
+    : await prisma.user.findMany({ where: { id: { in: actorIds } }, select: { id: true, displayName: true } });
+  const nameById = new Map(users.map((u) => [u.id, u.displayName]));
+  const recent = entries.map((entry) => {
+    const meta = (entry.metadata ?? {}) as Record<string, unknown>;
+    const label =
+      (typeof meta["name"] === "string" ? meta["name"] : undefined) ??
+      (typeof meta["to"] === "string" ? meta["to"] : undefined) ??
+      (typeof meta["path"] === "string" ? meta["path"] : undefined) ??
+      (typeof meta["objectId"] === "string" ? meta["objectId"].slice(0, 8) : "");
+    return {
+      action: entry.action,
+      actor: nameById.get(entry.actorUserId ?? "") ?? entry.actorUserId ?? "unknown",
+      label,
+      when: entry.createdAt,
+    };
+  });
+  return { folders, projects, files, grants, recent };
 }

 /** Verify the session cookie and load the user, or null if not signed in. */
@@ -116,183 +240,170 @@ async function resolveUser(
  return user;
 }

-/**
- * Shared document head: Tailwind CDN + a small design system (fonts, keyframes
- * for the aurora background, fade-in, shimmer). Both pages import it so the
- * look stays consistent.
- */
+/** 管理后台共享 head(全局 UI 主题,与老师端 /app 同源)。 */
 function pageHead(title: string): string {
  return `<head>
  <meta charset="utf-8"/>
  <meta name="viewport" content="width=device-width, initial-scale=1"/>
  <title>${title}</title>
-  <script src="https://cdn.tailwindcss.com"></script>
-  <link rel="preconnect" href="https://fonts.googleapis.com"/>
-  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet"/>
-  <style>
-    :root { font-family: 'Inter', system-ui, sans-serif; }
-    @keyframes aurora {
-      0%   { transform: translate(0,0) scale(1); }
-      33%  { transform: translate(6%, -8%) scale(1.15); }
-      66%  { transform: translate(-8%, 6%) scale(0.9); }
-      100% { transform: translate(0,0) scale(1); }
-    }
-    @keyframes rise {
-      from { opacity: 0; transform: translateY(16px); }
-      to   { opacity: 1; transform: translateY(0); }
-    }
-    @keyframes shimmer {
-      0% { background-position: -200% 0; }
-      100% { background-position: 200% 0; }
-    }
-    .aurora { filter: blur(80px); animation: aurora 18s ease-in-out infinite; }
-    .rise { animation: rise .7s cubic-bezier(.16,1,.3,1) both; }
-    .rise-2 { animation: rise .7s cubic-bezier(.16,1,.3,1) .1s both; }
-    .rise-3 { animation: rise .7s cubic-bezier(.16,1,.3,1) .2s both; }
-    .grad-text {
-      background: linear-gradient(120deg,#7c3aed,#0891b2,#4f46e5);
-      background-size: 200% auto;
-      -webkit-background-clip: text; background-clip: text; color: transparent;
-      animation: shimmer 6s linear infinite;
-    }
-    .glass { background: rgba(255,255,255,.7); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
-    .glow-btn { box-shadow: 0 12px 32px -10px rgba(124,58,237,.45); }
-  </style>
+  ${UI_HEAD_FONTS}
+  <style>${UI_THEME_CSS}</style>
 </head>`;
 }

-/** The animated aurora background blobs, shared by both pages (soft pastels on light). */
-const AURORA = `
-  <div class="pointer-events-none fixed inset-0 overflow-hidden">
-    <div class="aurora absolute -left-32 -top-32 h-96 w-96 rounded-full bg-violet-300/50"></div>
-    <div class="aurora absolute right-0 top-1/4 h-96 w-96 rounded-full bg-cyan-300/40" style="animation-delay:-6s"></div>
-    <div class="aurora absolute bottom-0 left-1/3 h-96 w-96 rounded-full bg-indigo-300/40" style="animation-delay:-12s"></div>
-  </div>`;
-
 function renderLoginPage(config: DatabaseRouteConfig): string {
  const feishuHref = `/auth/feishu/${encodeURIComponent(config.siloOrganizationSlug)}`;
  const devButton = config.allowDevLoginBypass
-    ? `
-      <div class="relative my-6 rise-3">
-        <div class="absolute inset-0 flex items-center"><div class="w-full border-t border-slate-200"></div></div>
-        <div class="relative flex justify-center"><span class="bg-white/70 px-3 text-[11px] font-medium uppercase tracking-[0.2em] text-slate-400">开发模式</span></div>
-      </div>
-      <a href="/database/dev-login"
-         class="rise-3 group flex w-full items-center justify-center gap-2 rounded-xl border border-amber-300 bg-amber-50 px-4 py-3 text-sm font-semibold text-amber-700 transition hover:border-amber-400 hover:bg-amber-100">
-        <span>⚡</span> 一键登录管理员
-      </a>
-      <p class="rise-3 mt-2 text-center text-xs text-slate-400">仅开发环境可见 · 跳过飞书 OAuth</p>`
+    ? `<div style="display:flex;align-items:center;gap:10px;margin:22px 0;color:var(--text-3);font-size:11px">
+         <span style="flex:1;border-top:1px solid var(--border-soft)"></span>开发模式
+         <span style="flex:1;border-top:1px solid var(--border-soft)"></span>
+       </div>
+       <a href="/database/dev-login" class="btn" style="width:100%;justify-content:center">⚡ 一键登录管理员</a>
+       <p style="margin:10px 0 0;text-align:center;font-size:11px;color:var(--text-3)">仅开发环境可见 · 跳过飞书 OAuth</p>`
    : "";

  return `<!doctype html>
 <html lang="zh-CN">
 ${pageHead("Database Admin · 登录")}
-<body class="relative min-h-screen overflow-hidden bg-gradient-to-br from-slate-50 via-white to-indigo-50 text-slate-800 flex items-center justify-center p-4">
-  ${AURORA}
-  <main class="rise glass relative w-full max-w-sm rounded-3xl border border-white/80 p-8 shadow-2xl shadow-indigo-200/50">
-    <div class="mb-7 text-center">
-      <div class="mx-auto mb-5 flex h-14 w-14 items-center justify-center rounded-2xl bg-gradient-to-br from-violet-500 to-cyan-400 text-2xl font-bold text-white glow-btn">D</div>
-      <h1 class="text-2xl font-bold tracking-tight grad-text">Database Admin</h1>
-      <p class="mt-2 text-sm text-slate-500">使用飞书登录以管理数据库</p>
+<body>
+  <div style="min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px">
+    <div style="width:100%;max-width:380px;background:var(--panel);border:1px solid var(--border-soft);border-radius:16px;padding:40px 36px;box-shadow:var(--shadow-pop)">
+      <div style="font-size:26px;font-weight:600;text-align:center">Database Admin</div>
+      <p style="margin:10px 0 30px;text-align:center;font-size:13px;color:var(--text-3)">使用飞书登录以管理数据库</p>
+      <a href="${feishuHref}" class="btn btn-primary" style="width:100%;justify-content:center;padding:11px 16px;font-size:14px">使用飞书登录</a>
+      ${devButton}
    </div>
-
-    <a href="${feishuHref}"
-       class="rise-2 glow-btn group flex w-full items-center justify-center gap-2 rounded-xl bg-gradient-to-r from-violet-500 to-indigo-500 px-4 py-3.5 text-sm font-semibold text-white transition hover:from-violet-400 hover:to-indigo-400">
-      <svg class="h-4 w-4" viewBox="0 0 24 24" fill="currentColor"><path d="M12 2 3 7v10l9 5 9-5V7l-9-5Zm0 2.3 6.5 3.6L12 11.5 5.5 7.9 12 4.3Z"/></svg>
-      使用飞书登录
-    </a>
-    ${devButton}
-  </main>
+  </div>
 </body>
 </html>`;
 }

 /** Sidebar nav items. `active` marks the current page. `href` "#" = placeholder. */
-const NAV_ITEMS: ReadonlyArray<{ label: string; icon: string; href: string; active: boolean }> = [
-  { label: "概览", icon: "M4 13h6V4H4v9Zm0 7h6v-5H4v5Zm10 0h6V11h-6v9Zm0-16v5h6V4h-6Z", href: "/database/dashboard", active: true },
-  { label: "数据表", icon: "M4 5h16v4H4V5Zm0 6h16v4H4v-4Zm0 6h16v2H4v-2Z", href: "#", active: false },
-  { label: "查询", icon: "m21 21-4.3-4.3M11 18a7 7 0 1 0 0-14 7 7 0 0 0 0 14Z", href: "#", active: false },
-  { 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 2 1l2-1 2 3-2 1a7 7 0 0 1 0 2Z", href: "#", active: false },
+const NAV_TABS: ReadonlyArray<{ id: string; label: string; icon: string }> = [
+  { id: "overview", label: "概览", icon: "M4 13h6V4H4v9Zm0 7h6v-5H4v5Zm10 0h6V11h-6v9Zm0-16v5h6V4h-6Z" },
+  { id: "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" },
+  { id: "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" },
+  { id: "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" },
+  { id: "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" },
+  { id: "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" },
 ];

-function renderDashboard(displayName: string): string {
-  const nav = NAV_ITEMS.map((item) => {
-    const cls = item.active
-      ? "group flex items-center gap-3 rounded-xl bg-gradient-to-r from-violet-500 to-indigo-500 px-3 py-2.5 text-sm font-semibold text-white shadow-lg shadow-indigo-300/50"
-      : "group flex items-center gap-3 rounded-xl px-3 py-2.5 text-sm font-medium text-slate-500 transition hover:bg-slate-100 hover:text-slate-900";
-    return `<a href="${item.href}" class="${cls}">
-            <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>
-            ${item.label}
-          </a>`;
-  }).join("\n          ");
+function renderDashboard(displayName: string, stats: DashboardStats | null, orgSlug: string): string {
+  const nav = NAV_TABS.map((t) => `
+    <button class="admin-tab" data-tab="${t.id}" style="display:flex;align-items:center;gap:10px;border-radius:10px;padding:9px 14px;font-size:13px;color:var(--text-3);background:none;border:none;cursor:pointer;text-align:left;width:100%">
+      <svg style="width:16px;height:16px;flex-shrink:0" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><path d="${t.icon}"/></svg>
+      ${t.label}
+    </button>`).join("\n");

-  const stats = [
-    { label: "数据表", value: "—", accent: "from-violet-200/60 to-transparent" },
-    { label: "记录数", value: "—", accent: "from-cyan-200/60 to-transparent" },
-    { label: "最近查询", value: "—", accent: "from-indigo-200/60 to-transparent" },
-  ].map((s, i) => `
-        <div class="rise-${i + 1} group relative overflow-hidden rounded-2xl border border-white/80 glass p-5 shadow-lg shadow-slate-200/50 transition hover:-translate-y-0.5 hover:shadow-xl hover:shadow-indigo-200/50">
-          <div class="absolute inset-0 bg-gradient-to-br ${s.accent} opacity-0 transition group-hover:opacity-100"></div>
-          <p class="relative text-sm text-slate-500">${s.label}</p>
-          <p class="relative mt-2 text-3xl font-bold text-slate-900">${s.value}</p>
+  const cards = [
+    { label: "文件夹", value: stats?.folders ?? "—" },
+    { label: "项目", value: stats?.projects ?? "—" },
+    { label: "文件", value: stats?.files ?? "—" },
+    { label: "活跃授权", value: stats?.grants ?? "—" },
+  ].map((s) => `
+        <div class="panel" style="padding:18px 20px">
+          <p style="font-size:12.5px;color:var(--text-3)">${s.label}</p>
+          <p style="margin-top:6px;font-size:28px;font-weight:600;color:var(--text)">${s.value}</p>
        </div>`).join("");

+  const recentRows = stats === null || stats.recent.length === 0
+    ? `<div style="padding:26px 0;text-align:center;font-size:12.5px;color:var(--text-3)">暂无文件库活动 · 到「文件库」里创建第一个文件夹吧</div>`
+    : stats.recent.map((r) => `
+          <div style="display:flex;align-items:center;gap:12px;border-top:1px solid var(--border-soft);padding:9px 0;font-size:13px">
+            <span class="tag">${escapeHtml(r.action)}</span>
+            <span style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)">${escapeHtml(r.label)}</span>
+            <span style="margin-left:auto;flex-shrink:0;font-size:11.5px;color:var(--text-3)">${escapeHtml(r.actor)} · ${escapeHtml(r.when.toLocaleString("zh-CN"))}</span>
+          </div>`).join("");
+
  const initial = escapeHtml(displayName.slice(0, 1) || "U");

  return `<!doctype html>
 <html lang="zh-CN">
-${pageHead("Database Admin · 概览")}
-<body class="relative min-h-screen overflow-hidden bg-gradient-to-br from-slate-50 via-white to-indigo-50 text-slate-700">
-  ${AURORA}
-  <div class="relative flex min-h-screen">
-    <!-- 左侧菜单栏 -->
-    <aside class="flex w-64 shrink-0 flex-col border-r border-slate-200/80 glass">
-      <div class="flex items-center gap-3 px-5 py-6">
-        <div class="flex h-10 w-10 items-center justify-center rounded-xl bg-gradient-to-br from-violet-500 to-cyan-400 text-lg font-bold text-white glow-btn">D</div>
-        <span class="text-base font-bold grad-text">Database Admin</span>
+${pageHead("Database Admin")}
+<body>
+  <div style="display:flex;height:100vh">
+    <aside style="width:240px;flex-shrink:0;background:var(--sidebar);border-right:1px solid var(--border-soft);display:flex;flex-direction:column">
+      <div style="padding:16px 16px 12px;border-bottom:1px solid var(--border-soft)">
+        <span style="font-size:15px;font-weight:600">Database Admin</span>
      </div>
-      <nav class="flex flex-1 flex-col gap-1.5 px-3 py-2">
-          ${nav}
+      <nav style="flex:1;display:flex;flex-direction:column;gap:2px;padding:10px">
+        ${nav}
      </nav>
-      <div class="m-3 flex items-center gap-3 rounded-xl border border-slate-200 bg-white/60 px-3 py-3">
-        <div class="flex h-9 w-9 items-center justify-center rounded-full bg-gradient-to-br from-violet-500 to-indigo-500 text-sm font-semibold text-white">${initial}</div>
-        <div class="min-w-0">
-          <p class="text-[11px] uppercase tracking-wider text-slate-400">已登录</p>
-          <p class="truncate text-sm font-medium text-slate-700">${escapeHtml(displayName)}</p>
+      <div style="margin:10px;padding:10px 12px;border-top:1px solid var(--border-soft);display:flex;align-items:center;gap:9px">
+        <div style="width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:600;flex-shrink:0">${initial}</div>
+        <div style="min-width:0;flex:1">
+          <p style="font-size:10.5px;color:var(--text-3)">已登录</p>
+          <p style="overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12.5px;color:var(--text)">${escapeHtml(displayName)}</p>
        </div>
+        <button id="logout" class="btn" style="padding:3px 10px;font-size:11px">退出</button>
      </div>
    </aside>

-    <!-- 右侧内容 -->
-    <div class="flex flex-1 flex-col">
-      <header class="flex items-center justify-between border-b border-slate-200/80 glass px-8 py-4">
-        <div>
-          <h1 class="text-lg font-bold text-slate-900">概览</h1>
-          <p class="text-xs text-slate-400">欢迎回来，这里是数据库管理台</p>
+    <div style="flex:1;display:flex;flex-direction:column;min-width:0">
+      <section id="tab-overview" class="admin-tab-section" style="flex:1;overflow-y:auto;padding:28px">
+        <h1 style="font-size:18px;font-weight:600;margin-bottom:4px">概览</h1>
+        <p style="font-size:11.5px;color:var(--text-3);margin-bottom:20px">文件库实时数据</p>
+        <div style="display:grid;grid-template-columns:repeat(4,1fr);gap:16px">
+          ${cards}
        </div>
-        <button id="logout"
-                class="rounded-xl border border-slate-200 bg-white px-4 py-2 text-sm font-medium text-slate-600 transition hover:border-slate-300 hover:bg-slate-50 hover:text-slate-900">
-          退出登录
-        </button>
-      </header>
+        <div class="panel" style="margin-top:18px">
+          <h2 style="font-size:13.5px;font-weight:600;margin-bottom:8px">最近活动</h2>
+          ${recentRows}
+        </div>
+      </section>

-      <main class="flex-1 p-8">
-        <div class="grid grid-cols-1 gap-5 sm:grid-cols-3">
-          ${stats}
-        </div>
+      <section id="tab-library" class="admin-tab-section" style="display:none;flex:1;min-height:0">
+        ${renderLibraryBrowser()}
+      </section>

-        <div class="rise-3 mt-6 flex h-64 items-center justify-center rounded-2xl border border-dashed border-slate-300 glass text-sm text-slate-400">
-          内容区占位 · 在 src/database/routes/databaseRoutes.ts 里继续搭建
-        </div>
-      </main>
+      <section id="tab-users" class="admin-tab-section" style="display:none;flex:1;overflow-y:auto;padding:28px">
+        <h1 style="font-size:18px;font-weight:600;margin-bottom:16px">用户管理</h1>
+        ${renderUsersPanel(orgSlug)}
+      </section>
+
+      <section id="tab-groups" class="admin-tab-section" style="display:none;flex:1;overflow-y:auto;padding:28px">
+        <h1 style="font-size:18px;font-weight:600;margin-bottom:16px">Group 管理</h1>
+        ${renderGroupsPanel(orgSlug)}
+      </section>
+
+      <section id="tab-search" class="admin-tab-section" style="display:none;flex:1;overflow-y:auto;padding:28px">
+        <h1 style="font-size:18px;font-weight:600;margin-bottom:4px">查询</h1>
+        <p style="font-size:12.5px;color:var(--text-3)">查询功能建设中</p>
+      </section>
+
+      <section id="tab-settings" class="admin-tab-section" style="display:none;flex:1;overflow-y:auto;padding:28px">
+        <h1 style="font-size:18px;font-weight:600;margin-bottom:4px">设置</h1>
+        <p style="font-size:12.5px;color:var(--text-3)">设置功能建设中</p>
+      </section>
    </div>
  </div>

  <script>
-    document.getElementById("logout").addEventListener("click", async () => {
-      await fetch("/auth/logout", { method: "POST" });
-      window.location.href = "/database/admin";
-    });
+    (function () {
+      const tabs = [...document.querySelectorAll(".admin-tab")];
+      const sections = Object.fromEntries(
+        [...document.querySelectorAll(".admin-tab-section")].map((s) => [s.id.replace("tab-", ""), s]),
+      );
+      function activate(id) {
+        tabs.forEach((t) => {
+          const on = t.dataset.tab === id;
+          t.style.background = on ? "var(--selected)" : "none";
+          t.style.color = on ? "var(--text)" : "var(--text-3)";
+          t.style.fontWeight = on ? "600" : "400";
+        });
+        Object.entries(sections).forEach(([key, s]) => {
+          s.style.display = key === id ? (key === "library" ? "block" : "block") : "none";
+        });
+        if (location.hash !== "#" + id) history.replaceState(null, "", "#" + id);
+      }
+      tabs.forEach((t) => t.addEventListener("click", () => activate(t.dataset.tab)));
+      document.getElementById("logout").addEventListener("click", async () => {
+        try { await fetch("/auth/logout", { method: "POST", credentials: "same-origin" }); } catch (e) {}
+        location.href = "/database/admin";
+      });
+      const fromHash = location.hash.replace(/^#/, "");
+      activate(tabs.some((t) => t.dataset.tab === fromHash) ? fromHash : "overview");
+    })();
  </script>
 </body>
 </html>`;
@@ -0,0 +1,235 @@
+/**
+ * /database/api/* 文件内容与导出端点(契约 9.3/9.4)。
+ * 冲突流:POST commits 返回 200 {version} 或 409 {currentVersion}(编辑 UI 拉 diff 后重提)。
+ */
+
+import type { FastifyInstance, FastifyRequest } from "fastify";
+import {
+  commitFile,
+  deleteFile,
+  diffFile,
+  fileHistory,
+  listFiles,
+  readFile,
+  readFileRaw,
+  type FileContentEncoding,
+} from "../filelib/fileService.js";
+import {
+  createManifestStubAdapter,
+  downloadExport,
+  getExportJob,
+  submitExport,
+} from "../filelib/exportService.js";
+import { FileLibError } from "../filelib/model.js";
+import {
+  actorOrNull,
+  bodyObject,
+  optionalString,
+  requireString,
+  sendRouteError,
+  type FileLibRouteDeps,
+} from "../filelib/routeShared.js";
+
+export async function registerFileRoutes(
+  app: FastifyInstance,
+  deps: FileLibRouteDeps,
+): Promise<void> {
+  const fileDeps = {
+    prisma: deps.prisma,
+    organizationId: deps.organizationId,
+    groupResolver: deps.groupResolver,
+    versionStore: deps.versionStore,
+  };
+  const exportDeps = { ...fileDeps, adapters: deps.exportAdapters };
+
+  function pathParam(request: FastifyRequest): string {
+    const path = (request.query as { path?: string }).path;
+    if (path === undefined) throw new FileLibError(400, "invalid_request", "missing query: path");
+    return path;
+  }
+
+  function encodingParam(raw: unknown): FileContentEncoding {
+    if (raw === undefined || raw === "utf8") return "utf8";
+    if (raw === "base64") return "base64";
+    throw new FileLibError(400, "invalid_request", "encoding must be utf8 or base64");
+  }
+
+  app.get("/database/api/projects/:id/files", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const prefix = (request.query as { prefix?: string }).prefix;
+      return { files: await listFiles(fileDeps, actor, id, prefix) };
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.get("/database/api/projects/:id/file", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      return await readFile(fileDeps, actor, id, pathParam(request));
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  // 原始字节下载(Content-Disposition: attachment;浏览器直接 save-as)
+  app.get("/database/api/projects/:id/file/raw", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const raw = await readFileRaw(fileDeps, actor, id, pathParam(request));
+      return reply
+        .header("Content-Disposition",
+          `attachment; filename="${encodeURIComponent(raw.filename)}"; filename*=UTF-8''${encodeURIComponent(raw.filename)}`)
+        .header("X-Content-Version", raw.version)
+        .type("application/octet-stream")
+        .send(raw.buffer);
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  // 新建/上传(baseVersion 恒 null;已存在 → 409)
+  app.put("/database/api/projects/:id/file", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const body = bodyObject(request.body);
+      const result = await commitFile(fileDeps, actor, id, {
+        path: requireString(body, "path"),
+        baseVersion: null,
+        content: requireString(body, "content"),
+        encoding: encodingParam(body["encoding"]),
+        message: optionalString(body, "message"),
+      });
+      return reply.status(201).send(result);
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  // 提交编辑(乐观并发;409 → details.currentVersion + file.conflict_detected 审计)
+  app.post("/database/api/projects/:id/file/commits", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const body = bodyObject(request.body);
+      const baseVersion = body["baseVersion"];
+      if (typeof baseVersion !== "string" || baseVersion === "") {
+        throw new FileLibError(400, "invalid_request", "baseVersion must be a non-empty string");
+      }
+      return await commitFile(fileDeps, actor, id, {
+        path: requireString(body, "path"),
+        baseVersion,
+        content: requireString(body, "content"),
+        encoding: encodingParam(body["encoding"]),
+        message: optionalString(body, "message"),
+      });
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.delete("/database/api/projects/:id/file", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const body = bodyObject(request.body);
+      await deleteFile(fileDeps, actor, id, pathParam(request), requireString(body, "baseVersion"));
+      return reply.status(204).send();
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.get("/database/api/projects/:id/file/diff", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const query = request.query as { from?: string; to?: string };
+      if (query.from === undefined || query.to === undefined) {
+        throw new FileLibError(400, "invalid_request", "missing query: from / to");
+      }
+      return await diffFile(fileDeps, actor, id, pathParam(request), query.from, query.to);
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.get("/database/api/projects/:id/file/history", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const rawLimit = (request.query as { limit?: string }).limit;
+      const limit = rawLimit === undefined ? undefined : Number.parseInt(rawLimit, 10);
+      if (limit !== undefined && (!Number.isSafeInteger(limit) || limit <= 0)) {
+        throw new FileLibError(400, "invalid_request", "limit must be a positive integer");
+      }
+      return { history: await fileHistory(fileDeps, actor, id, pathParam(request), limit) };
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  /* ------------------------------------------------------------ 导出(D10 异步) */
+
+  app.post("/database/api/projects/:id/exports", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const body = bodyObject(request.body);
+      const params = body["params"];
+      if (params !== undefined && (typeof params !== "object" || params === null || Array.isArray(params))) {
+        throw new FileLibError(400, "invalid_request", "params must be an object");
+      }
+      const job = await submitExport(
+        exportDeps,
+        actor,
+        id,
+        requireString(body, "target"),
+        (params as Record<string, unknown> | undefined) ?? {},
+      );
+      return reply.status(202).send({ jobId: job.id, status: job.status });
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.get("/database/api/exports/:jobId", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { jobId } = request.params as { jobId: string };
+      return await getExportJob(exportDeps, actor, jobId);
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.get("/database/api/exports/:jobId/download", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { jobId } = request.params as { jobId: string };
+      const artifact = await downloadExport(exportDeps, actor, jobId);
+      return reply
+        .header("Content-Disposition", `attachment; filename="${artifact.filename}"`)
+        .type("application/octet-stream")
+        .send(artifact.content);
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+}
@@ -0,0 +1,310 @@
+/**
+ * /database/api/* 树与授权端点(契约 9.1/9.2 + C2 过渡搜索)。
+ * 约定:绝对路径;actorOrNull 前置;业务全走 filelib 服务层;错误统一 sendRouteError。
+ */
+
+import type { FastifyInstance } from "fastify";
+import {
+  breadcrumb,
+  createNode,
+  getEffectiveRole,
+  listChildren,
+  moveNode,
+  renameNode,
+  softDeleteNode,
+  updateNodeDescription,
+  type FileLibActor,
+  type InitialGrant,
+} from "../filelib/treeService.js";
+import {
+  forceAdjustGrants,
+  listGrants,
+  putGrants,
+  revokeGrant,
+  setIndependentPermission,
+} from "../filelib/grantService.js";
+import { FileLibError } from "../filelib/model.js";
+import {
+  actorOrNull,
+  bodyObject,
+  optionalString,
+  requireString,
+  sendRouteError,
+  treeDeps,
+  type FileLibRouteDeps,
+} from "../filelib/routeShared.js";
+
+export async function registerFileLibRoutes(
+  app: FastifyInstance,
+  deps: FileLibRouteDeps,
+): Promise<void> {
+  const tree = treeDeps(deps);
+  const grantDeps = { prisma: deps.prisma, organizationId: deps.organizationId, groupResolver: deps.groupResolver };
+
+  /* ------------------------------------------------------------ 身份 */
+
+  // 前端判断能力面用:是否网站管理员(root 创建按钮显隐)。
+  app.get("/database/api/me", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    return { userId: actor.userId, isWebsiteAdmin: actor.isWebsiteAdmin };
+  });
+
+  /* ------------------------------------------------------------ 树节点 */
+
+  app.get("/database/api/nodes", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const query = request.query as { parentId?: string };
+      const parentId = query.parentId === undefined || query.parentId === "" ? null : query.parentId;
+      return { nodes: await listChildren(tree, actor, parentId) };
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.post("/database/api/nodes", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const body = bodyObject(request.body);
+      const parentIdRaw = body["parentId"];
+      if (parentIdRaw !== null && typeof parentIdRaw !== "string") {
+        throw new FileLibError(400, "invalid_request", "parentId must be a string or null");
+      }
+      const kindRaw = requireString(body, "kind");
+      if (kindRaw !== "FOLDER" && kindRaw !== "PROJECT") {
+        throw new FileLibError(400, "invalid_request", "kind must be FOLDER or PROJECT");
+      }
+      const grants = parseGrants(body["grants"]);
+      const description = optionalString(body, "description");
+      const node = await createNode(tree, actor, {
+        parentId: parentIdRaw,
+        kind: kindRaw,
+        name: requireString(body, "name"),
+        description: description || undefined,
+        grants,
+      });
+      return reply.status(201).send({ node });
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.get("/database/api/nodes/:id", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const role = await getEffectiveRole(tree, actor, id); // 无权限即 404(D8)
+      const node = await deps.prisma.fileLibNode.findFirst({
+        where: { id, organizationId: deps.organizationId },
+      });
+      if (node === null) throw new FileLibError(404, "node_not_found", "node not found");
+      const settings = node.kind === "PROJECT"
+        ? await deps.prisma.fileLibProjectSettings.findUnique({ where: { nodeId: node.id } })
+        : null;
+      return {
+        node: {
+          id: node.id,
+          parentId: node.parentId,
+          kind: node.kind,
+          name: node.name,
+          description: node.description,
+          role,
+          provisionStatus: node.provisionStatus,
+          independentPermission: settings?.independentPermissionsEnabled ?? false,
+          createdAt: node.createdAt,
+          updatedAt: node.updatedAt,
+        },
+      };
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.patch("/database/api/nodes/:id", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const body = bodyObject(request.body);
+      const name = optionalString(body, "name");
+      const hasParent = Object.prototype.hasOwnProperty.call(body, "parentId");
+      const hasDesc = Object.prototype.hasOwnProperty.call(body, "description");
+      if (name === undefined && !hasParent && !hasDesc) {
+        throw new FileLibError(400, "invalid_request", "nothing to update (name? parentId? description?)");
+      }
+      let node;
+      if (name !== undefined) node = await renameNode(tree, actor, id, name);
+      if (hasParent) {
+        const parentId = body["parentId"];
+        if (parentId !== null && typeof parentId !== "string") {
+          throw new FileLibError(400, "invalid_request", "parentId must be a string or null");
+        }
+        node = await moveNode(tree, actor, id, parentId);
+      }
+      if (hasDesc) {
+        const d = body["description"];
+        if (d !== null && typeof d !== "string") {
+          throw new FileLibError(400, "invalid_request", "description must be a string or null");
+        }
+        node = await updateNodeDescription(tree, actor, id, typeof d === "string" ? d : null);
+      }
+      return { node };
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.delete("/database/api/nodes/:id", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      await softDeleteNode(tree, actor, id);
+      return reply.status(204).send();
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.get("/database/api/nodes/:id/breadcrumb", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      return { breadcrumb: await breadcrumb(tree, actor, id) };
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.get("/database/api/nodes/:id/effective-permission", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      return { role: await getEffectiveRole(tree, actor, id) };
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  /* ------------------------------------------------------------ 授权 */
+
+  app.get("/database/api/nodes/:id/grants", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      return { grants: await listGrants(grantDeps, actor, id) };
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.put("/database/api/nodes/:id/grants", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const body = bodyObject(request.body);
+      const items = parseGrants(body["grants"]);
+      if (items === undefined) throw new FileLibError(400, "invalid_request", "missing field: grants");
+      return await putGrants(grantDeps, actor, id, items);
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.delete("/database/api/nodes/:id/grants/:grantId", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id, grantId } = request.params as { id: string; grantId: string };
+      await revokeGrant(grantDeps, actor, id, grantId);
+      return reply.status(204).send();
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  // D19 高危通道:网站管理员凭 id 强制调整,全部留 admin.force_adjust 审计。
+  app.put("/database/api/admin/nodes/:id/grants", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const body = bodyObject(request.body);
+      const items = parseGrants(body["grants"]);
+      if (items === undefined) throw new FileLibError(400, "invalid_request", "missing field: grants");
+      return await forceAdjustGrants(grantDeps, actor, id, items);
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.put("/database/api/projects/:id/independent-permission", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const { id } = request.params as { id: string };
+      const body = bodyObject(request.body);
+      if (typeof body["enabled"] !== "boolean") {
+        throw new FileLibError(400, "invalid_request", "enabled must be a boolean");
+      }
+      return await setIndependentPermission(grantDeps, actor, id, body["enabled"]);
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  /* ------------------------------------------------------------ Group 搜索(过渡) */
+
+  // 过渡实现:读 hub Team(C2 /groups/search 由 Group 团队交付后切换)。
+  app.get("/database/api/groups/search", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      const q = ((request.query as { q?: string }).q ?? "").trim();
+      const teams = await deps.prisma.team.findMany({
+        where: {
+          organizationId: deps.organizationId,
+          archivedAt: null,
+          ...(q === "" ? {} : { name: { contains: q, mode: "insensitive" as const } }),
+        },
+        take: 20,
+        orderBy: { name: "asc" },
+        select: { id: true, name: true },
+      });
+      return { groups: teams.map((t) => ({ id: t.id, name: t.name, breadcrumb: t.name })) };
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+}
+
+function parseGrants(raw: unknown): InitialGrant[] | undefined {
+  if (raw === undefined) return undefined;
+  if (!Array.isArray(raw)) throw new FileLibError(400, "invalid_request", "grants must be an array");
+  return raw.map((item) => {
+    if (typeof item !== "object" || item === null) {
+      throw new FileLibError(400, "invalid_request", "grant entries must be objects");
+    }
+    const grant = item as Record<string, unknown>;
+    const principalType = grant["principalType"];
+    if (principalType !== "USER" && principalType !== "GROUP") {
+      throw new FileLibError(400, "invalid_request", "grant.principalType must be USER or GROUP");
+    }
+    const role = grant["role"];
+    if (role !== "VIEW" && role !== "EDIT" && role !== "MANAGE") {
+      throw new FileLibError(400, "invalid_request", "grant.role must be VIEW, EDIT or MANAGE");
+    }
+    if (typeof grant["principalId"] !== "string" || grant["principalId"] === "") {
+      throw new FileLibError(400, "invalid_request", "grant.principalId must be a non-empty string");
+    }
+    return { principalType, principalId: grant["principalId"], role };
+  });
+}
@@ -0,0 +1,596 @@
+/**
+ * 管理员后台「文件库」页内浏览器区块(树 | 内容 | 预览三栏,含授权管理)。
+ *
+ * renderLibraryBrowser() 返回可嵌入任意后台布局的 HTML+JS 片段:
+ * 以 #lib-root 为根、内部用 q() 作用域选择器,不与宿主页其他元素冲突。
+ * 与独立页版浏览器的区别:去掉了自己的 wordmark/用户栏(由后台外壳提供),
+ * 保留管理员工具(根目录创建、授权面板、独立权限开关)。
+ */
+
+export function renderLibraryBrowser(): string {
+  return `
+<div id="lib-root" style="display:flex;height:100%;min-height:0">
+  <!-- 左:目录树 -->
+  <div style="width:250px;flex-shrink:0;border-right:1px solid var(--border-soft);display:flex;flex-direction:column;background:var(--sidebar)">
+    <div style="display:flex;align-items:center;justify-content:space-between;padding:12px 14px;border-bottom:1px solid var(--border-soft)">
+      <span style="font-size:13px;font-weight:600;color:var(--text)">文件库</span>
+      <button id="lib-btn-new-root" class="btn hidden" style="padding:3px 10px;font-size:11px" title="新建根目录">+ 根目录</button>
+    </div>
+    <div id="lib-tree" style="flex:1;overflow-y:auto;padding:8px 8px 16px;font-size:13px"></div>
+  </div>
+
+  <!-- 中:节点内容 -->
+  <div id="lib-main" style="flex:1;overflow-y:auto;min-width:0">
+    <div class="lib-empty-hint">从左侧选择一个文件夹或项目</div>
+  </div>
+
+  <!-- 右:预览/编辑(选中文件时出现) -->
+  <div id="lib-preview" style="display:none;width:44%;min-width:380px;flex-shrink:0;overflow-y:auto;border-left:1px solid var(--border-soft);padding:16px"></div>
+
+  <div id="lib-modal-root"></div>
+  <div id="lib-toast-root" style="position:fixed;bottom:16px;right:16px;z-index:50;display:flex;flex-direction:column;gap:8px"></div>
+</div>
+
+<style>
+  #lib-root .lib-empty-hint { height:100%;display:flex;align-items:center;justify-content:center;color:var(--text-3);font-size:13px; }
+  #lib-root .tree-item { display:flex;align-items:center;gap:4px;padding:4px 6px;border-radius:6px;cursor:pointer;color:var(--text);transition:background 120ms ease;user-select:none; }
+  #lib-root .tree-item:hover { background:var(--hover); }
+  #lib-root .tree-item.selected { background:var(--selected); }
+  #lib-root .tree-children { border-left:1px solid var(--guide);margin-left:15px;padding-left:3px; }
+  #lib-root .tree-icon { width:16px;height:16px;flex-shrink:0;display:flex;align-items:center;justify-content:center; }
+  #lib-root .tree-caret { color:var(--text-3); }
+  #lib-root .tree-badge { margin-left:auto;padding-right:4px;font-size:10px;color:var(--text-3);font-family:var(--mono); }
+  #lib-root .tree-empty { padding:24px 12px;text-align:center;font-size:12px;color:var(--text-3); }
+  #lib-root .lib-toast { border-radius:8px;padding:8px 14px;font-size:12px;color:#fff;background:#333230;max-width:320px; }
+  #lib-root .lib-toast-err { background:#7E2C26; }
+  #lib-root .modal-mask { position:fixed;inset:0;z-index:40;background:rgba(26,26,24,.3);display:flex;align-items:center;justify-content:center;padding:16px; }
+  #lib-root .modal-card { width:100%;max-width:440px;background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:22px; }
+  #lib-root pre.diff { white-space:pre-wrap;font-family:var(--mono);font-size:12px;line-height:1.7;background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:10px;margin:0; }
+  #lib-root pre.diff .add { display:block;color:var(--diff-add-text);background:var(--diff-add-bg); }
+  #lib-root pre.diff .del { display:block;color:var(--diff-del-text);background:var(--diff-del-bg); }
+  #lib-root .meta-grid { display:grid;grid-template-columns:1fr 1fr;gap:10px 24px;font-size:13px;color:var(--text-2); }
+  #lib-root .meta-grid b { color:var(--text);font-weight:600; }
+  #lib-root .conflict-panel { margin-top:14px;border:1px solid #E8E2C8;background:#FCFBF4;border-radius:10px;padding:14px 16px; }
+  #lib-root .conflict-title { font-size:13px;font-weight:600;color:#6E6329;margin-bottom:8px; }
+  #lib-root .conflict-note { font-size:11px;color:#8A8059;margin-top:8px; }
+  #lib-root .export-status { font-size:11px;color:var(--text-3);font-family:var(--mono); }
+</style>
+
+<script>
+(function () {
+  const libRoot = document.getElementById("lib-root");
+  if (!libRoot) return;
+  const $ = (sel) => libRoot.querySelector(sel);
+  const $$ = (sel) => [...libRoot.querySelectorAll(sel)];
+  const esc = (s) => String(s).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;");
+
+  async function api(path, opts = {}) {
+    const res = await fetch(path, {
+      credentials: "same-origin",
+      headers: opts.body ? { "Content-Type": "application/json" } : undefined,
+      ...opts,
+      body: opts.body ? JSON.stringify(opts.body) : undefined,
+    });
+    if (res.status === 401) { location.href = "/database/admin"; throw new Error("unauthenticated"); }
+    if (res.status === 204) return null;
+    const text = await res.text();
+    const data = text ? JSON.parse(text) : null;
+    if (!res.ok) {
+      const err = (data && data.error) || { code: "unknown", message: res.statusText };
+      const e = new Error(err.message); e.code = err.code; e.status = res.status; Object.assign(e, err);
+      throw e;
+    }
+    return data;
+  }
+
+  function toast(msg, kind = "info") {
+    const el = document.createElement("div");
+    el.className = "lib-toast" + (kind === "err" ? " lib-toast-err" : "");
+    el.textContent = msg;
+    $("#lib-toast-root").appendChild(el);
+    setTimeout(() => el.remove(), 3600);
+  }
+  const ok = (m) => toast(m, "ok");
+  const fail = (e) => toast(e.message || String(e), "err");
+
+  function modal(html) {
+    const root = $("#lib-modal-root");
+    root.innerHTML = '<div class="modal-mask"><div class="modal-card">' + html + "</div></div>";
+    root.firstElementChild.addEventListener("click", (e) => { if (e.target === e.currentTarget) closeModal(); });
+  }
+  function closeModal() { $("#lib-modal-root").innerHTML = ""; }
+
+  let me = { userId: null, isWebsiteAdmin: false };
+  let current = null;
+  const expanded = new Set();
+  let currentFile = null;
+
+  const ICONS = {
+    caretRight: '<svg width="10" height="10" viewBox="0 0 24 24" fill="currentColor"><path d="M9 6l6 6-6 6z"/></svg>',
+    caretDown: '<svg width="10" height="10" viewBox="0 0 24 24" fill="currentColor"><path d="M6 9l6 6 6-6z"/></svg>',
+    folder: '<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>',
+    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>',
+  };
+
+  async function loadChildren(parentId) {
+    const q = parentId === null ? "" : "?parentId=" + encodeURIComponent(parentId);
+    return (await api("/database/api/nodes" + q)).nodes;
+  }
+
+  async function renderTree() {
+    const tree = $("#lib-tree");
+    tree.innerHTML = "";
+    try {
+      const roots = await loadChildren(null);
+      if (roots.length === 0) {
+        tree.innerHTML = '<div class="tree-empty">空文件库' +
+          (me.isWebsiteAdmin ? " · 点上方「+ 根目录」开始" : "") + "</div>";
+        return;
+      }
+      for (const node of roots) tree.appendChild(await treeItem(node, 0));
+    } catch (e) { tree.innerHTML = '<div class="tree-empty">' + esc(e.message) + "</div>"; }
+  }
+
+  async function treeItem(node, depth) {
+    const wrap = document.createElement("div");
+    const row = document.createElement("div");
+    row.className = "tree-item" + (current && current.id === node.id ? " selected" : "");
+    const caret = document.createElement("span");
+    caret.className = "tree-icon tree-caret";
+    if (node.kind === "FOLDER") {
+      caret.innerHTML = expanded.has(node.id) ? ICONS.caretDown : ICONS.caretRight;
+      caret.onclick = (e) => { e.stopPropagation(); toggleExpand(node.id); };
+    }
+    row.appendChild(caret);
+    const iconSpan = document.createElement("span");
+    iconSpan.className = "tree-icon";
+    iconSpan.style.color = node.kind === "PROJECT" ? "#1A1A18" : "#9C9B96";
+    iconSpan.innerHTML = node.kind === "PROJECT" ? ICONS.project : ICONS.folder;
+    row.appendChild(iconSpan);
+    const nameSpan = document.createElement("span");
+    nameSpan.className = "truncate";
+    nameSpan.textContent = node.name;
+    row.appendChild(nameSpan);
+    if (node.role !== "MANAGE") {
+      const badge = document.createElement("span");
+      badge.className = "tree-badge";
+      badge.textContent = node.role;
+      row.appendChild(badge);
+    }
+    row.onclick = () => {
+      if (node.kind === "FOLDER") {
+        if (expanded.has(node.id)) expanded.delete(node.id); else expanded.add(node.id);
+      }
+      selectNode(node.id);
+    };
+    wrap.appendChild(row);
+    if (node.kind === "FOLDER" && expanded.has(node.id)) {
+      wrap.appendChild(await childrenBlock(node.id, depth));
+    }
+    return wrap;
+  }
+
+  async function childrenBlock(parentId, depth) {
+    const block = document.createElement("div");
+    block.className = "tree-children";
+    const kids = await loadChildren(parentId);
+    for (const kid of kids) block.appendChild(await treeItem(kid, depth + 1));
+    return block;
+  }
+
+  async function toggleExpand(id) {
+    if (expanded.has(id)) expanded.delete(id); else expanded.add(id);
+    await renderTree();
+  }
+
+  async function selectNode(id) {
+    try {
+      const [{ node }, { breadcrumb }] = await Promise.all([
+        api("/database/api/nodes/" + id),
+        api("/database/api/nodes/" + id + "/breadcrumb"),
+      ]);
+      current = node; current.breadcrumb = breadcrumb;
+      closePreview();
+      await renderTree();
+      renderMain();
+    } catch (e) { fail(e); }
+  }
+
+  function crumbsHtml() {
+    return current.breadcrumb.map((c) =>
+      c.name === null ? "<span>…</span>" : "<span>" + esc(c.name) + "</span>"
+    ).join('<span style="margin:0 4px;color:var(--border)">/</span>');
+  }
+
+  function renderMain() {
+    const n = current;
+    const canManage = n.role === "MANAGE";
+    const canEdit = canManage || n.role === "EDIT";
+    const tabs = [];
+    tabs.push(["detail", "概览"]);
+    if (n.kind === "PROJECT") tabs.push(["files", "文件"]);
+    if (canManage) tabs.push(["grants", "授权"]);
+    current.tab = current.tab && tabs.some(t => t[0] === current.tab) ? current.tab : "detail";
+
+    $("#lib-main").innerHTML =
+      '<div style="max-width:860px;margin:0 auto;padding:28px 28px 56px">' +
+        '<div style="font-size:12px;color:var(--text-3);margin-bottom:6px">' + crumbsHtml() + "</div>" +
+        '<div style="display:flex;align-items:center;justify-content:space-between;margin-bottom:18px">' +
+          '<div style="font-size:17px;font-weight:600;color:var(--text);display:flex;align-items:center;gap:8px">' + esc(n.name) +
+            '<span class="tag">' + n.kind + "</span>" +
+            '<span class="tag tag-role">' + n.role + "</span>" +
+          "</div>" +
+          '<div style="display:flex;gap:6px">' +
+            (canEdit && n.kind === "FOLDER" ? '<button class="btn" onclick="window.__lib.createChild()">+ 新建子节点</button>' : "") +
+            (canManage ? '<button class="btn" onclick="window.__lib.renameCurrent()">重命名</button>' : "") +
+            (canManage ? '<button class="btn btn-danger" onclick="window.__lib.deleteCurrent()">删除</button>' : "") +
+          "</div>" +
+        "</div>" +
+        '<div class="tabs">' +
+          tabs.map(([id, label]) =>
+            '<button onclick="window.__lib.switchTab(\\'' + id + '\\')" class="tab' +
+            (current.tab === id ? " active" : "") + '">' + label + "</button>").join("") +
+        "</div>" +
+        '<div id="lib-tab-body"></div>' +
+      "</div>";
+    renderTab();
+  }
+
+  function renderTab() {
+    const body = $("#lib-tab-body");
+    if (current.tab === "files") return renderFilesTab(body);
+    if (current.tab === "grants") return renderGrantsTab(body);
+    let extra = "";
+    if (current.kind === "PROJECT") {
+      extra =
+        '<div class="divider"></div>' +
+        '<div class="inline-form" style="justify-content:flex-start">' +
+          '<span class="quiet">独立权限</span>' +
+          '<b style="font-size:13px">' + (current.independentPermission ? "开启" : "关闭") + "</b>" +
+          (current.role === "MANAGE"
+            ? '<button class="btn" onclick="window.__lib.toggleIndependent()">' + (current.independentPermission ? "关闭" : "开启") + "</button>"
+            : "") +
+          '<span class="quiet">关闭时仅继承父级权限(创建者除外)</span>' +
+        "</div>" +
+        '<div class="divider"></div>' +
+        '<div class="section-title">导出</div>' +
+        '<div class="inline-form">' +
+          '<select id="lib-x-target" class="select" style="width:auto"><option value="manifest">manifest(stub)</option></select>' +
+          '<button class="btn" onclick="window.__lib.submitExport()">开始导出</button>' +
+          '<span id="lib-x-status" class="export-status"></span>' +
+        "</div>";
+    }
+    body.innerHTML =
+      '<div class="panel">' +
+        '<div class="meta-grid">' +
+          "<div>类型 <b>" + current.kind + "</b></div>" +
+          "<div>我的权限 <b>" + current.role + "</b></div>" +
+          "<div>创建时间 " + new Date(current.createdAt).toLocaleString("zh-CN") + "</div>" +
+          "<div>更新时间 " + new Date(current.updatedAt).toLocaleString("zh-CN") + "</div>" +
+        "</div>" + extra +
+      "</div>";
+    pollExport();
+  }
+
+  /* ---------------- 节点操作 ---------------- */
+  function createDialog(parentId) {
+    modal(
+      '<div class="modal-title">' + (parentId ? "新建子节点" : "新建根目录") + "</div>" +
+      '<div class="form-row"><label class="form-label">名称</label>' +
+      '<input id="lib-f-name" class="input" placeholder="例如:物理必修一"/></div>' +
+      '<div class="form-row"><label class="form-label">类型</label>' +
+      '<select id="lib-f-kind" class="select">' +
+        '<option value="FOLDER">文件夹</option><option value="PROJECT">项目(Git 仓库)</option>' +
+      "</select></div>" +
+      '<div class="modal-actions">' +
+        '<button class="btn" onclick="window.__lib.closeModal()">取消</button>' +
+        '<button class="btn btn-primary" onclick="window.__lib.submitCreate(\\'' + (parentId ?? "") + '\\')">创建</button>' +
+      "</div>"
+    );
+  }
+  async function submitCreate(parentId) {
+    try {
+      await api("/database/api/nodes", { method: "POST", body: {
+        parentId: parentId === "" ? null : parentId,
+        kind: $("#lib-f-kind").value, name: $("#lib-f-name").value,
+      }});
+      closeModal(); ok("已创建");
+      if (parentId) expanded.add(parentId);
+      await renderTree();
+    } catch (e) { fail(e); }
+  }
+
+  /* ---------------- 授权 ---------------- */
+  async function renderGrantsTab(body) {
+    try {
+      const { grants } = await api("/database/api/nodes/" + current.id + "/grants");
+      const rows = grants.map((g) =>
+        "<tr>" +
+          "<td>" + (g.principalType === "USER" ? "👤" : "👥") + " " + esc(g.principalId) +
+            (g.isCreatorGrant ? ' <span class="quiet">(创建者)</span>' : "") + "</td>" +
+          '<td class="file-meta">' + g.role + "</td>" +
+          "<td style='text-align:right'>" + (g.isCreatorGrant ? "" :
+            '<button class="link-danger" onclick="window.__lib.revokeGrant(\\'' + g.id + '\\')">收回</button>') + "</td>" +
+        "</tr>").join("");
+      body.innerHTML =
+        '<div class="panel">' +
+          '<table class="list"><thead><tr><th>主体</th><th>级别</th><th></th></tr></thead>' +
+          "<tbody>" + rows + "</tbody></table>" +
+          '<div class="divider"></div>' +
+          '<div class="section-title">新增授权</div>' +
+          '<div class="inline-form">' +
+            '<select id="lib-g-type" class="select" style="width:110px" onchange="window.__lib.gTypeChanged()">' +
+              '<option value="USER">用户</option><option value="GROUP">Group</option></select>' +
+            '<input id="lib-g-principal" class="input" placeholder="用户 id"/>' +
+            '<select id="lib-g-group" class="select hidden"></select>' +
+            '<select id="lib-g-role" class="select" style="width:110px">' +
+              '<option value="VIEW">VIEW</option><option value="EDIT">EDIT</option><option value="MANAGE">MANAGE</option></select>' +
+            '<button class="btn btn-primary" onclick="window.__lib.addGrant()">授予</button>' +
+          "</div>" +
+          '<div class="section-note">MANAGE 仅创建者可授;创建者授权不可动(契约 8.1)</div>' +
+        "</div>";
+    } catch (e) { body.innerHTML = '<div class="panel quiet">' + esc(e.message) + "</div>"; }
+  }
+
+  /* ---------------- 文件 ---------------- */
+  async function renderFilesTab(body) {
+    try {
+      const { files } = await api("/database/api/projects/" + current.id + "/files");
+      const rows = files.map((f) =>
+        '<tr class="file-row" onclick="window.__lib.openFile(\\'' + esc(f.path) + '\\')">' +
+          '<td class="file-path">' + esc(f.path) + "</td>" +
+          '<td class="file-meta" style="text-align:right">' + f.size + " B</td></tr>").join("");
+      body.innerHTML =
+        '<div class="panel">' +
+          '<div class="inline-form" style="justify-content:space-between;margin-bottom:6px">' +
+            '<div class="section-title" style="margin:0">项目文件(' + files.length + ")</div>" +
+            (current.role !== "VIEW"
+              ? '<div class="inline-form" style="gap:6px">' +
+                '<button class="btn" onclick="window.__lib.newFileDialog()">+ 新建文件</button>' +
+                '<button class="btn btn-primary" onclick="document.getElementById(\\'lib-upload-input\\').click()">上传文件</button>' +
+                '<input id="lib-upload-input" type="file" class="hidden"/>' +
+                "</div>"
+              : "") +
+          "</div>" +
+          (files.length === 0 ? '<div class="quiet" style="padding:20px 0;text-align:center">空仓库 · 可新建或上传文件</div>'
+            : '<table class="list">' + rows + "</table>") +
+        "</div>";
+      const up = $("#lib-upload-input");
+      if (up) up.onchange = (e) => doUpload(e.target);
+    } catch (e) { body.innerHTML = '<div class="panel quiet">' + esc(e.message) + "</div>"; }
+  }
+
+  function newFileDialog() {
+    modal(
+      '<div class="modal-title">新建文件</div>' +
+      '<div class="form-row"><label class="form-label">路径</label>' +
+      '<input id="lib-nf-path" class="input" style="font-family:var(--mono)" placeholder="docs/intro.md"/></div>' +
+      '<div class="form-row"><label class="form-label">内容</label>' +
+      '<textarea id="lib-nf-content" rows="8" class="textarea" placeholder="内容…"></textarea></div>' +
+      '<div class="modal-actions"><button class="btn" onclick="window.__lib.closeModal()">取消</button>' +
+      '<button class="btn btn-primary" onclick="window.__lib.submitNewFile()">创建</button></div>'
+    );
+  }
+  async function submitNewFile() {
+    try {
+      await api("/database/api/projects/" + current.id + "/file", { method: "PUT", body: {
+        path: $("#lib-nf-path").value, content: $("#lib-nf-content").value,
+      }});
+      closeModal(); ok("已创建"); renderTab();
+    } catch (e) { fail(e); }
+  }
+
+  function u8ToBase64(bytes) {
+    let bin = "";
+    const CHUNK = 0x8000;
+    for (let i = 0; i < bytes.length; i += CHUNK) {
+      bin += String.fromCharCode.apply(null, bytes.subarray(i, i + CHUNK));
+    }
+    return btoa(bin);
+  }
+  async function doUpload(input) {
+    const file = input.files && input.files[0];
+    input.value = "";
+    if (!file) return;
+    if (file.size > 10 * 1024 * 1024) return toast("文件超过 10MB 上限", "err");
+    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/" + current.id + "/file", { method: "PUT", body });
+      ok("已上传 " + file.name);
+      renderTab();
+    } catch (e) { fail(e); }
+  }
+
+  async function openFile(path) {
+    try {
+      const f = await api("/database/api/projects/" + current.id + "/file?path=" + encodeURIComponent(path));
+      currentFile = f;
+      const canEdit = current.role !== "VIEW";
+      const prev = $("#lib-preview");
+      prev.style.display = "block";
+      prev.innerHTML =
+        '<div class="panel">' +
+          '<div class="inline-form" style="justify-content:space-between;margin-bottom:10px">' +
+            '<span class="file-meta">' + esc(f.path) + " @ " + esc(f.version) + "</span>" +
+            '<div class="inline-form" style="gap:6px">' +
+              '<a class="btn" href="/database/api/projects/' + current.id + '/file/raw?path=' +
+                encodeURIComponent(f.path) + '" download>下载</a>' +
+              '<button class="btn" onclick="window.__lib.showHistory()">历史</button>' +
+              (canEdit ? '<button class="btn btn-danger" onclick="window.__lib.deleteFile()">删除文件</button>' : "") +
+              '<button class="btn" onclick="window.__lib.closePreview()" title="关闭预览">✕</button>' +
+            "</div>" +
+          "</div>" +
+          (f.encoding === "base64"
+            ? '<div class="quiet">二进制文件(' + f.size + " B),不支持在线编辑</div>"
+            : '<textarea id="lib-ef-content" rows="16" class="textarea" ' + (canEdit ? "" : "readonly") +
+              ">" + esc(f.content) + "</textarea>") +
+          (canEdit && f.encoding !== "base64"
+            ? '<div class="modal-actions"><button class="btn btn-primary" onclick="window.__lib.saveFile()">提交修改</button></div>'
+            : "") +
+          '<div id="lib-conflict-zone"></div>' +
+        "</div>";
+    } catch (e) { fail(e); }
+  }
+  function closePreview() {
+    const prev = $("#lib-preview");
+    if (prev) { prev.style.display = "none"; prev.innerHTML = ""; }
+    currentFile = null;
+  }
+  async function saveFile() {
+    try {
+      const r = await api("/database/api/projects/" + current.id + "/file/commits", { method: "POST", body: {
+        path: currentFile.path, baseVersion: currentFile.version, content: $("#lib-ef-content").value,
+      }});
+      ok("已提交 " + r.version); await openFile(currentFile.path);
+    } catch (e) {
+      if (e.status === 409 && e.currentVersion) return showConflict(e.currentVersion);
+      fail(e);
+    }
+  }
+  async function showConflict(currentVersion) {
+    const { diff } = await api("/database/api/projects/" + current.id + "/file/diff?path=" +
+      encodeURIComponent(currentFile.path) + "&from=" + encodeURIComponent(currentFile.version) +
+      "&to=" + encodeURIComponent(currentVersion));
+    $("#lib-conflict-zone").innerHTML =
+      '<div class="conflict-panel">' +
+        '<div class="conflict-title">冲突:他人已提交 ' + esc(currentVersion) + ",差异如下(你的基版 → 最新版)</div>" +
+        '<pre class="diff">' + esc(diff)
+          .replace(/^\\+(.*)$/gm, '<span class="add">+$1</span>')
+          .replace(/^-(.*)$/gm, '<span class="del">-$1</span>') + "</pre>" +
+        '<div class="conflict-note">请人工合并后,以最新内容为全文重新提交(基版将更新为 ' + esc(currentVersion) + ")</div>" +
+        '<div class="modal-actions"><button class="btn" onclick="window.__lib.acceptLatest()">载入最新内容</button></div>' +
+      "</div>";
+    currentFile.version = currentVersion;
+  }
+  async function deleteFile() {
+    if (!confirm("删除文件 " + currentFile.path + "?")) return;
+    try {
+      await api("/database/api/projects/" + current.id + "/file?path=" + encodeURIComponent(currentFile.path),
+        { method: "DELETE", body: { baseVersion: currentFile.version } });
+      ok("已删除"); closePreview(); renderTab();
+    } catch (e) { fail(e); }
+  }
+  async function showHistory() {
+    const { history } = await api("/database/api/projects/" + current.id + "/file/history?path=" +
+      encodeURIComponent(currentFile.path));
+    modal(
+      '<div class="modal-title">版本历史</div>' +
+      '<div style="max-height:320px;overflow-y:auto">' +
+        history.map((v) =>
+          '<div style="border-top:1px solid #F5F5F4;padding:8px 0;font-size:12px">' +
+            '<span class="file-meta" style="color:var(--accent)">' + esc(v.version) + "</span> " + esc(v.message) +
+            '<div class="quiet">' + new Date(v.committedAt).toLocaleString("zh-CN") +
+            (v.author ? " · " + esc(v.author) : "") + "</div></div>").join("") +
+      "</div>" +
+      '<div class="modal-actions"><button class="btn" onclick="window.__lib.closeModal()">关闭</button></div>'
+    );
+  }
+
+  /* ---------------- 导出 ---------------- */
+  let exportJobId = null;
+  async function submitExport() {
+    try {
+      const r = await api("/database/api/projects/" + current.id + "/exports", { method: "POST", body: { target: $("#lib-x-target").value } });
+      exportJobId = r.jobId;
+      $("#lib-x-status").textContent = "任务 " + r.jobId.slice(0, 8) + "… 排队中";
+      pollExport();
+    } catch (e) { fail(e); }
+  }
+  async function pollExport() {
+    if (!exportJobId) return;
+    try {
+      const job = await api("/database/api/exports/" + exportJobId);
+      const el = $("#lib-x-status");
+      if (!el) return;
+      if (job.status === "DONE") {
+        el.innerHTML = '完成 · <a href="/database/api/exports/' + exportJobId + '/download">下载</a>';
+      } else if (job.status === "FAILED") {
+        el.textContent = "失败:" + (job.error || "");
+      } else {
+        el.textContent = "状态:" + job.status + "…";
+        setTimeout(pollExport, 1000);
+      }
+    } catch { /* ignore */ }
+  }
+
+  /* ---------------- 暴露给内联 onclick 的操作表 ---------------- */
+  window.__lib = {
+    createChild() { createDialog(current.id); },
+    async renameCurrent() {
+      const name = prompt("新名称", current.name);
+      if (name === null) return;
+      try {
+        await api("/database/api/nodes/" + current.id, { method: "PATCH", body: { name } });
+        ok("已重命名"); await selectNode(current.id);
+      } catch (e) { fail(e); }
+    },
+    async deleteCurrent() {
+      if (!confirm("确认删除「" + current.name + "」?软删除后不可见。")) return;
+      try {
+        await api("/database/api/nodes/" + current.id, { method: "DELETE" });
+        ok("已删除"); current = null; await renderTree();
+        $("#lib-main").innerHTML = '<div class="lib-empty-hint">从左侧选择一个文件夹或项目</div>';
+        closePreview();
+      } catch (e) { fail(e); }
+    },
+    switchTab(id) { current.tab = id; renderMain(); },
+    async toggleIndependent() {
+      try {
+        await api("/database/api/projects/" + current.id + "/independent-permission", {
+          method: "PUT", body: { enabled: !current.independentPermission },
+        });
+        ok("已切换"); await selectNode(current.id);
+      } catch (e) { fail(e); }
+    },
+    async gTypeChanged() {
+      const isGroup = $("#lib-g-type").value === "GROUP";
+      $("#lib-g-principal").classList.toggle("hidden", isGroup);
+      $("#lib-g-group").classList.toggle("hidden", !isGroup);
+      if (isGroup && $("#lib-g-group").options.length === 0) {
+        const { groups } = await api("/database/api/groups/search?q=");
+        $("#lib-g-group").innerHTML = groups.map((g) => '<option value="' + esc(g.id) + '">' + esc(g.name) + "</option>").join("");
+      }
+    },
+    async addGrant() {
+      const type = $("#lib-g-type").value;
+      const principalId = type === "GROUP" ? $("#lib-g-group").value : $("#lib-g-principal").value.trim();
+      if (!principalId) return toast("请填写主体", "err");
+      try {
+        await api("/database/api/nodes/" + current.id + "/grants", { method: "PUT", body: {
+          grants: [{ principalType: type, principalId, role: $("#lib-g-role").value }],
+        }});
+        ok("已授予"); renderTab();
+      } catch (e) { fail(e); }
+    },
+    async revokeGrant(grantId) {
+      try {
+        await api("/database/api/nodes/" + current.id + "/grants/" + grantId, { method: "DELETE" });
+        ok("已收回"); renderTab();
+      } catch (e) { fail(e); }
+    },
+    newFileDialog, submitNewFile, openFile, closePreview, saveFile, deleteFile, showHistory,
+    acceptLatest() { openFile(currentFile.path); toast("已载入最新内容,请在此基础上合并", "info"); },
+    submitExport, closeModal,
+  };
+
+  /* ---------------- 初始化 ---------------- */
+  (async function init() {
+    try {
+      me = await api("/database/api/me");
+      if (me.isWebsiteAdmin) {
+        const btn = $("#lib-btn-new-root");
+        btn.classList.remove("hidden");
+        btn.onclick = () => createDialog(null);
+      }
+    } catch (e) { /* 401 已由 api 处理跳转 */ }
+    await renderTree();
+  })();
+})();
+</script>`;
+}
@@ -0,0 +1,801 @@
+/**
+ * /database/library —— 文件库浏览页(管理员后台的文件工具)。
+ *
+ * 服务端渲染外壳 + 浏览器端 JS 调 /database/api/*(同源 session cookie)。
+ * 设计令牌与全局 UI 主题(uiTheme.ts)一致。能力面全部由 API 的 404/403 表达(D8)。
+ */
+
+import type { FastifyInstance } from "fastify";
+import type { PrismaClient } from "@prisma/client";
+import { SESSION_COOKIE_NAME, verifySession } from "../../admin/auth/session.js";
+
+export interface LibraryPageConfig {
+  readonly prisma: PrismaClient;
+  readonly sessionSecret: string;
+}
+
+export async function registerLibraryPage(
+  app: FastifyInstance,
+  config: LibraryPageConfig,
+): Promise<void> {
+  app.get("/database/library", async (request, reply) => {
+    const raw = request.cookies[SESSION_COOKIE_NAME];
+    const session = raw === undefined || raw === "" ? null : verifySession(raw, config.sessionSecret);
+    if (session === null) return reply.redirect("/database/admin");
+    const user = await config.prisma.user.findUnique({
+      where: { id: session.userId },
+      select: { displayName: true },
+    });
+    if (user === null) return reply.redirect("/database/admin");
+    return reply.type("text/html").send(renderLibraryPage(user.displayName));
+  });
+}
+
+function renderLibraryPage(displayName: string): string {
+  const initial = displayName.slice(0, 1).replace(/[&<>"']/, "U");
+  return `<!doctype html>
+<html lang="zh-CN">
+<head>
+  <meta charset="utf-8"/>
+  <meta name="viewport" content="width=device-width, initial-scale=1"/>
+  <title>文件库</title>
+  <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"/>
+  <style>
+    /* 设计令牌:与全局 UI 主题(uiTheme.ts)保持一致。 */
+    :root {
+      --bg: #FCFCFB;
+      --panel: #FFFFFF;
+      --sidebar: #F7F7F5;
+      --text: #1A1A18;
+      --text-2: #6B6A66;
+      --text-3: #9C9B96;
+      --border: #ECECE8;
+      --border-soft: #F1F1EE;
+      --accent: #1A1A18;
+      --accent-hover: #333330;
+      --selected: #EBEBE7;
+      --hover: #F4F4F1;
+      --danger: #A13A33;
+      --guide: #E9E9E5;
+      --diff-add-bg: #F3F6F2;
+      --diff-add-text: #4A6741;
+      --diff-del-bg: #F8F2F1;
+      --diff-del-text: #A13A33;
+      --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+    }
+    * { box-sizing: border-box; }
+    html, body { margin: 0; height: 100%; }
+    body {
+      font-family: 'Inter', -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
+      background: var(--bg); color: var(--text);
+      font-size: 14px; line-height: 1.6;
+      -webkit-font-smoothing: antialiased;
+    }
+    .hidden { display: none !important; }
+
+    /* 布局 */
+    .shell { display: flex; height: 100vh; }
+    .sidebar {
+      width: 292px; flex-shrink: 0; background: var(--sidebar);
+      border-right: 1px solid var(--border);
+      display: flex; flex-direction: column;
+    }
+    .sidebar-head {
+      display: flex; align-items: center; justify-content: space-between;
+      padding: 14px 16px; border-bottom: 1px solid var(--border);
+    }
+    .wordmark { font-size: 14px; font-weight: 600; color: var(--text); }
+    .sidebar-actions { display: flex; gap: 6px; }
+    .tree { flex: 1; overflow-y: auto; padding: 8px 8px 16px; font-size: 13px; }
+    .sidebar-user {
+      margin: 0; padding: 10px 16px;
+      border-top: 1px solid var(--border);
+      display: flex; align-items: center; gap: 8px;
+      font-size: 12px; color: var(--text-2);
+    }
+    .avatar {
+      width: 24px; height: 24px; border-radius: 50%;
+      background: var(--accent); color: #fff;
+      display: flex; align-items: center; justify-content: center;
+      font-size: 11px; font-weight: 600; flex-shrink: 0;
+    }
+    .main { flex: 1; overflow-y: auto; }
+    .main-inner { max-width: 860px; margin: 0 auto; padding: 32px 32px 64px; }
+    .empty-hint {
+      height: 100%; display: flex; align-items: center; justify-content: center;
+      color: var(--text-3); font-size: 13px;
+    }
+
+    /* 树 */
+    .tree-item {
+      display: flex; align-items: center; gap: 4px;
+      padding: 4px 6px; border-radius: 6px; cursor: pointer;
+      color: var(--text); transition: background 120ms ease;
+      user-select: none;
+    }
+    .tree-item:hover { background: var(--hover); }
+    .tree-item.selected { background: var(--selected); color: #1C1917; }
+    .tree-children { border-left: 1px solid var(--guide); margin-left: 15px; padding-left: 3px; }
+    .tree-icon { width: 16px; height: 16px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; }
+    .tree-caret { color: var(--text-3); }
+    .tree-badge { margin-left: auto; padding-right: 4px; font-size: 10px; color: var(--text-3); font-family: var(--mono); }
+    .tree-empty { padding: 24px 12px; text-align: center; font-size: 12px; color: var(--text-3); }
+
+    /* 按钮 */
+    .btn {
+      display: inline-flex; align-items: center; gap: 4px;
+      padding: 5px 12px; border-radius: 8px;
+      border: 1px solid var(--border); background: var(--panel);
+      color: var(--accent); font-size: 12px; font-weight: 500;
+      cursor: pointer; transition: all 120ms ease; text-decoration: none;
+    }
+    .btn:hover { background: var(--hover); border-color: #D6D3D1; }
+    .btn-primary {
+      background: var(--accent); border-color: var(--accent); color: #fff;
+    }
+    .btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
+    .btn-danger {
+      border-color: transparent; background: transparent; color: var(--danger);
+    }
+    .btn-danger:hover { background: var(--diff-del-bg); border-color: transparent; }
+
+    /* 内容区 */
+    .crumbs { font-size: 12px; color: var(--text-3); margin-bottom: 6px; }
+    .crumbs span + span::before { content: " / "; color: var(--border); }
+    .node-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
+    .node-title { font-size: 17px; font-weight: 600; color: var(--text); display: flex; align-items: center; gap: 8px; }
+    .tag {
+      font-size: 10px; font-weight: 500; font-family: var(--mono);
+      padding: 2px 7px; border-radius: 999px;
+      border: 1px solid var(--border); color: var(--text-2); background: var(--panel);
+    }
+    .tag-role { color: var(--accent); border-color: #D6D3D1; }
+    .node-actions { display: flex; gap: 6px; }
+    .tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
+    .tab {
+      padding: 8px 14px; font-size: 13px; color: var(--text-2);
+      border: none; background: none; cursor: pointer;
+      border-bottom: 2px solid transparent; margin-bottom: -1px;
+      transition: color 120ms ease;
+    }
+    .tab:hover { color: var(--text); }
+    .tab.active { color: var(--text); font-weight: 600; border-bottom-color: var(--accent); }
+    .panel {
+      background: var(--panel); border: 1px solid var(--border);
+      border-radius: 10px; padding: 20px 22px;
+    }
+    .panel + .panel, .panel + #file-editor { margin-top: 14px; }
+    .meta-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 24px; font-size: 13px; color: var(--text-2); }
+    .meta-grid b { color: var(--text); font-weight: 600; }
+    .section-title { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 10px; }
+    .section-note { font-size: 11px; color: var(--text-3); margin-top: 6px; }
+
+    /* 表格 */
+    table.list { width: 100%; border-collapse: collapse; font-size: 13px; }
+    table.list th { text-align: left; font-size: 11px; font-weight: 500; color: var(--text-3); padding: 4px 0; }
+    table.list td { padding: 7px 0; border-top: 1px solid #F5F5F4; }
+    table.list tr:first-child td { border-top: none; }
+    .file-row { cursor: pointer; }
+    .file-row:hover td { background: var(--hover); }
+    .file-path { font-family: var(--mono); font-size: 12px; color: var(--text); }
+    .file-meta { font-size: 11px; color: var(--text-3); font-family: var(--mono); }
+    .link-danger { color: var(--danger); font-size: 12px; background: none; border: none; cursor: pointer; padding: 0; }
+    .link-danger:hover { text-decoration: underline; }
+
+    /* 表单 */
+    .input, .select, .textarea {
+      width: 100%; padding: 7px 10px; border-radius: 8px;
+      border: 1px solid var(--border); background: var(--panel);
+      font-size: 13px; color: var(--text); font-family: inherit;
+      outline: none; transition: border-color 120ms ease;
+    }
+    .input:focus, .select:focus, .textarea:focus { border-color: var(--accent); }
+    .textarea { font-family: var(--mono); font-size: 12px; line-height: 1.7; resize: vertical; }
+    .form-label { display: block; font-size: 11px; color: var(--text-2); margin-bottom: 4px; }
+    .form-row { margin-bottom: 12px; }
+    .inline-form { display: flex; gap: 8px; align-items: center; }
+    .inline-form .input { flex: 1; }
+
+    /* 弹层 */
+    .modal-mask {
+      position: fixed; inset: 0; z-index: 40;
+      background: rgba(26, 26, 24, .3);
+      display: flex; align-items: center; justify-content: center; padding: 16px;
+    }
+    .modal-card {
+      width: 100%; max-width: 440px; background: var(--panel);
+      border: 1px solid var(--border); border-radius: 12px; padding: 22px;
+    }
+    .modal-title { font-size: 15px; font-weight: 600; margin-bottom: 14px; }
+    .modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
+    .toast {
+      border-radius: 8px; padding: 8px 14px; font-size: 12px; color: #fff;
+      background: #333230; max-width: 320px;
+    }
+    .toast-ok { background: #333230; }
+    .toast-err { background: #7E2C26; }
+    #toast-root { position: fixed; bottom: 16px; right: 16px; z-index: 50; display: flex; flex-direction: column; gap: 8px; }
+
+    /* 冲突与 diff */
+    .conflict-panel {
+      margin-top: 14px; border: 1px solid #E8E2C8; background: #FCFBF4;
+      border-radius: 10px; padding: 14px 16px;
+    }
+    .conflict-title { font-size: 13px; font-weight: 600; color: #6E6329; margin-bottom: 8px; }
+    .conflict-note { font-size: 11px; color: #8A8059; margin-top: 8px; }
+    pre.diff {
+      white-space: pre-wrap; font-family: var(--mono); font-size: 12px; line-height: 1.7;
+      background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 10px;
+      margin: 0;
+    }
+    pre.diff .add { display: block; color: var(--diff-add-text); background: var(--diff-add-bg); }
+    pre.diff .del { display: block; color: var(--diff-del-text); background: var(--diff-del-bg); }
+
+    .divider { border-top: 1px solid var(--border); margin: 14px 0; }
+    .quiet { color: var(--text-3); font-size: 12px; }
+    .export-status { font-size: 11px; color: var(--text-3); font-family: var(--mono); }
+    .export-status a { color: var(--accent); }
+  </style>
+</head>
+<body>
+  <div class="shell">
+    <aside class="sidebar">
+      <div class="sidebar-head">
+        <span class="wordmark">文件库</span>
+        <div class="sidebar-actions">
+          <button id="btn-new-root" class="btn hidden" title="新建根目录">+ 根目录</button>
+          <a class="btn" href="/database/dashboard">后台</a>
+        </div>
+      </div>
+      <div id="tree" class="tree"></div>
+      <div class="sidebar-user">
+        <div class="avatar">${initial}</div>
+        <span style="flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--text)">${displayName}</span>
+        <button id="btn-logout" class="btn" style="padding:3px 10px;font-size:11px" title="退出登录">退出</button>
+      </div>
+    </aside>
+    <main class="main" id="main">
+      <div class="empty-hint">从左侧选择一个文件夹或项目</div>
+    </main>
+  </div>
+
+  <div id="modal-root"></div>
+  <div id="toast-root"></div>
+
+<script>
+/* ---------------- 基础设施 ---------------- */
+const $ = (sel) => document.querySelector(sel);
+const esc = (s) => String(s).replace(/&/g,"&amp;").replace(/</g,"&lt;").replace(/>/g,"&gt;").replace(/"/g,"&quot;");
+
+async function api(path, opts = {}) {
+  const res = await fetch(path, {
+    credentials: "same-origin",
+    headers: opts.body ? { "Content-Type": "application/json" } : undefined,
+    ...opts,
+    body: opts.body ? JSON.stringify(opts.body) : undefined,
+  });
+  if (res.status === 401) { location.href = "/database/admin"; throw new Error("unauthenticated"); }
+  if (res.status === 204) return null;
+  const text = await res.text();
+  const data = text ? JSON.parse(text) : null;
+  if (!res.ok) {
+    const err = (data && data.error) || { code: "unknown", message: res.statusText };
+    const e = new Error(err.message); e.code = err.code; e.status = res.status; Object.assign(e, err);
+    throw e;
+  }
+  return data;
+}
+
+function toast(msg, kind = "info") {
+  const el = document.createElement("div");
+  el.className = "toast " + (kind === "err" ? "toast-err" : "toast-ok");
+  el.textContent = msg;
+  $("#toast-root").appendChild(el);
+  setTimeout(() => el.remove(), 3600);
+}
+const ok = (m) => toast(m, "ok");
+const fail = (e) => toast(e.message || String(e), "err");
+
+function modal(html) {
+  const root = $("#modal-root");
+  root.innerHTML = '<div class="modal-mask"><div class="modal-card">' + html + "</div></div>";
+  root.firstElementChild.addEventListener("click", (e) => { if (e.target === e.currentTarget) closeModal(); });
+}
+function closeModal() { $("#modal-root").innerHTML = ""; }
+
+/* ---------------- 状态 ---------------- */
+let me = { userId: null, isWebsiteAdmin: false };
+let current = null;
+const expanded = new Set();
+
+/* ---------------- 目录树 ---------------- */
+/* 图标统一用固定尺寸的 inline SVG。每行几何一致:[16px 箭头槽][16px 图标槽][名称]。 */
+const ICONS = {
+  caretRight: '<svg width="10" height="10" viewBox="0 0 24 24" fill="currentColor"><path d="M9 6l6 6-6 6z"/></svg>',
+  caretDown: '<svg width="10" height="10" viewBox="0 0 24 24" fill="currentColor"><path d="M6 9l6 6 6-6z"/></svg>',
+  folder: '<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>',
+  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>',
+};
+
+async function loadChildren(parentId) {
+  const q = parentId === null ? "" : "?parentId=" + encodeURIComponent(parentId);
+  return (await api("/database/api/nodes" + q)).nodes;
+}
+
+async function renderTree() {
+  const tree = $("#tree");
+  tree.innerHTML = "";
+  try {
+    const roots = await loadChildren(null);
+    if (roots.length === 0) {
+      tree.innerHTML = '<div class="tree-empty">空文件库' +
+        (me.isWebsiteAdmin ? " · 点上方「+ 根目录」开始" : "") + "</div>";
+      return;
+    }
+    for (const node of roots) tree.appendChild(await treeItem(node, 0));
+  } catch (e) { tree.innerHTML = '<div class="tree-empty">' + esc(e.message) + "</div>"; }
+}
+
+async function treeItem(node, depth) {
+  const wrap = document.createElement("div");
+  const row = document.createElement("div");
+  row.className = "tree-item" + (current && current.id === node.id ? " selected" : "");
+
+  const caret = document.createElement("span");
+  caret.className = "tree-icon tree-caret";
+  if (node.kind === "FOLDER") {
+    caret.innerHTML = expanded.has(node.id) ? ICONS.caretDown : ICONS.caretRight;
+    caret.onclick = (e) => { e.stopPropagation(); toggleExpand(node.id, wrap, depth); };
+  }
+  row.appendChild(caret);
+
+  const iconSpan = document.createElement("span");
+  iconSpan.className = "tree-icon";
+  iconSpan.style.color = node.kind === "PROJECT" ? "#1A1A18" : "#9C9B96";
+  iconSpan.innerHTML = node.kind === "PROJECT" ? ICONS.project : ICONS.folder;
+  row.appendChild(iconSpan);
+
+  const nameSpan = document.createElement("span");
+  nameSpan.className = "truncate";
+  nameSpan.textContent = node.name;
+  row.appendChild(nameSpan);
+  if (node.role !== "MANAGE") {
+    const badge = document.createElement("span");
+    badge.className = "tree-badge";
+    badge.textContent = node.role;
+    row.appendChild(badge);
+  }
+
+  row.onclick = () => {
+    if (node.kind === "FOLDER") {
+      if (expanded.has(node.id)) expanded.delete(node.id); else expanded.add(node.id);
+    }
+    selectNode(node.id);
+  };
+  wrap.appendChild(row);
+  if (node.kind === "FOLDER" && expanded.has(node.id)) {
+    wrap.appendChild(await childrenBlock(node.id, depth));
+  }
+  return wrap;
+}
+
+async function childrenBlock(parentId, depth) {
+  const block = document.createElement("div");
+  block.className = "tree-children";
+  const kids = await loadChildren(parentId);
+  for (const kid of kids) block.appendChild(await treeItem(kid, depth + 1));
+  return block;
+}
+
+async function toggleExpand(id, wrap, depth) {
+  if (expanded.has(id)) expanded.delete(id); else expanded.add(id);
+  await renderTree();
+}
+
+/* ---------------- 节点详情 ---------------- */
+async function selectNode(id) {
+  try {
+    const [{ node }, { breadcrumb }] = await Promise.all([
+      api("/database/api/nodes/" + id),
+      api("/database/api/nodes/" + id + "/breadcrumb"),
+    ]);
+    current = node; current.breadcrumb = breadcrumb;
+    await renderTree();
+    renderMain();
+  } catch (e) { fail(e); }
+}
+
+function crumbsHtml() {
+  return current.breadcrumb.map((c) =>
+    c.name === null ? "<span>…</span>" : "<span>" + esc(c.name) + "</span>"
+  ).join("");
+}
+
+function renderMain() {
+  const n = current;
+  const canManage = n.role === "MANAGE";
+  const canEdit = canManage || n.role === "EDIT";
+  const tabs = [];
+  tabs.push(["detail", "概览"]);
+  if (n.kind === "PROJECT") tabs.push(["files", "文件"]);
+  if (canManage) tabs.push(["grants", "授权"]);
+  current.tab = current.tab && tabs.some(t => t[0] === current.tab) ? current.tab : "detail";
+
+  $("#main").innerHTML =
+    '<div class="main-inner">' +
+      '<div class="crumbs">' + crumbsHtml() + "</div>" +
+      '<div class="node-head">' +
+        '<div class="node-title">' + esc(n.name) +
+          '<span class="tag">' + n.kind + "</span>" +
+          '<span class="tag tag-role">' + n.role + "</span>" +
+        "</div>" +
+        '<div class="node-actions">' +
+          (canEdit && n.kind === "FOLDER" ? '<button class="btn" onclick="createChild()">+ 新建子节点</button>' : "") +
+          (canManage ? '<button class="btn" onclick="renameCurrent()">重命名</button>' : "") +
+          (canManage ? '<button class="btn btn-danger" onclick="deleteCurrent()">删除</button>' : "") +
+        "</div>" +
+      "</div>" +
+      '<div class="tabs">' +
+        tabs.map(([id, label]) =>
+          '<button onclick="switchTab(\\'' + id + '\\')" class="tab' +
+          (current.tab === id ? " active" : "") + '">' + label + "</button>").join("") +
+      "</div>" +
+      '<div id="tab-body"></div>' +
+    "</div>";
+  renderTab();
+}
+
+function switchTab(id) { current.tab = id; renderMain(); }
+
+async function renderTab() {
+  const body = $("#tab-body");
+  if (current.tab === "files") return renderFilesTab(body);
+  if (current.tab === "grants") return renderGrantsTab(body);
+  let extra = "";
+  if (current.kind === "PROJECT") {
+    extra =
+      '<div class="divider"></div>' +
+      '<div class="inline-form" style="justify-content:flex-start">' +
+        '<span class="quiet">独立权限</span>' +
+        '<b style="font-size:13px">' + (current.independentPermission ? "开启" : "关闭") + "</b>" +
+        (current.role === "MANAGE"
+          ? '<button class="btn" onclick="toggleIndependent()">' + (current.independentPermission ? "关闭" : "开启") + "</button>"
+          : "") +
+        '<span class="quiet">关闭时仅继承父级权限(创建者除外)</span>' +
+      "</div>" +
+      '<div class="divider"></div>' +
+      '<div class="section-title">导出</div>' +
+      '<div class="inline-form">' +
+        '<select id="x-target" class="select" style="width:auto"><option value="manifest">manifest(stub)</option></select>' +
+        '<button class="btn" onclick="submitExport()">开始导出</button>' +
+        '<span id="x-status" class="export-status"></span>' +
+      "</div>";
+  }
+  body.innerHTML =
+    '<div class="panel">' +
+      '<div class="meta-grid">' +
+        "<div>类型 <b>" + current.kind + "</b></div>" +
+        "<div>我的权限 <b>" + current.role + "</b></div>" +
+        "<div>创建时间 " + new Date(current.createdAt).toLocaleString("zh-CN") + "</div>" +
+        "<div>更新时间 " + new Date(current.updatedAt).toLocaleString("zh-CN") + "</div>" +
+      "</div>" + extra +
+    "</div>";
+  pollExport();
+}
+
+/* ---------------- 节点操作 ---------------- */
+async function createChild() {
+  createDialog(current.id);
+}
+function createDialog(parentId) {
+  modal(
+    '<div class="modal-title">' + (parentId ? "新建子节点" : "新建根目录") + "</div>" +
+    '<div class="form-row"><label class="form-label">名称</label>' +
+    '<input id="f-name" class="input" placeholder="例如:物理必修一"/></div>' +
+    '<div class="form-row"><label class="form-label">类型</label>' +
+    '<select id="f-kind" class="select">' +
+      '<option value="FOLDER">文件夹</option><option value="PROJECT">项目(Git 仓库)</option>' +
+    "</select></div>" +
+    '<div class="modal-actions">' +
+      '<button class="btn" onclick="closeModal()">取消</button>' +
+      '<button class="btn btn-primary" onclick="submitCreate(\\'' + (parentId ?? "") + '\\')">创建</button>' +
+    "</div>"
+  );
+}
+async function submitCreate(parentId) {
+  try {
+    await api("/database/api/nodes", { method: "POST", body: {
+      parentId: parentId === "" ? null : parentId,
+      kind: $("#f-kind").value, name: $("#f-name").value,
+    }});
+    closeModal(); ok("已创建");
+    if (parentId) expanded.add(parentId);
+    await renderTree();
+  } catch (e) { fail(e); }
+}
+async function renameCurrent() {
+  const name = prompt("新名称", current.name);
+  if (name === null) return;
+  try {
+    await api("/database/api/nodes/" + current.id, { method: "PATCH", body: { name } });
+    ok("已重命名"); await selectNode(current.id);
+  } catch (e) { fail(e); }
+}
+async function deleteCurrent() {
+  if (!confirm("确认删除「" + current.name + "」?软删除后不可见。")) return;
+  try {
+    await api("/database/api/nodes/" + current.id, { method: "DELETE" });
+    ok("已删除"); current = null; await renderTree();
+    $("#main").innerHTML = '<div class="empty-hint">从左侧选择一个文件夹或项目</div>';
+  } catch (e) { fail(e); }
+}
+async function toggleIndependent() {
+  try {
+    await api("/database/api/projects/" + current.id + "/independent-permission", {
+      method: "PUT", body: { enabled: !current.independentPermission },
+    });
+    ok("已切换"); await selectNode(current.id);
+  } catch (e) { fail(e); }
+}
+
+/* ---------------- 授权 ---------------- */
+async function renderGrantsTab(body) {
+  try {
+    const { grants } = await api("/database/api/nodes/" + current.id + "/grants");
+    const rows = grants.map((g) =>
+      "<tr>" +
+        "<td>" + (g.principalType === "USER" ? "👤" : "👥") + " " + esc(g.principalId) +
+          (g.isCreatorGrant ? ' <span class="quiet">(创建者)</span>' : "") + "</td>" +
+        '<td class="file-meta">' + g.role + "</td>" +
+        "<td style='text-align:right'>" + (g.isCreatorGrant ? "" :
+          '<button class="link-danger" onclick="revokeGrant(\\'' + g.id + '\\')">收回</button>') + "</td>" +
+      "</tr>").join("");
+    body.innerHTML =
+      '<div class="panel">' +
+        '<table class="list"><thead><tr><th>主体</th><th>级别</th><th></th></tr></thead>' +
+        "<tbody>" + rows + "</tbody></table>" +
+        '<div class="divider"></div>' +
+        '<div class="section-title">新增授权</div>' +
+        '<div class="inline-form">' +
+          '<select id="g-type" class="select" style="width:110px" onchange="gTypeChanged()">' +
+            '<option value="USER">用户</option><option value="GROUP">Group</option></select>' +
+          '<input id="g-principal" class="input" placeholder="用户 id"/>' +
+          '<select id="g-group" class="select hidden"></select>' +
+          '<select id="g-role" class="select" style="width:110px">' +
+            '<option value="VIEW">VIEW</option><option value="EDIT">EDIT</option><option value="MANAGE">MANAGE</option></select>' +
+          '<button class="btn btn-primary" onclick="addGrant()">授予</button>' +
+        "</div>" +
+        '<div class="section-note">MANAGE 仅创建者可授;创建者授权不可动(契约 8.1)</div>' +
+      "</div>";
+  } catch (e) { body.innerHTML = '<div class="panel quiet">' + esc(e.message) + "</div>"; }
+}
+async function gTypeChanged() {
+  const isGroup = $("#g-type").value === "GROUP";
+  $("#g-principal").classList.toggle("hidden", isGroup);
+  $("#g-group").classList.toggle("hidden", !isGroup);
+  if (isGroup && $("#g-group").options.length === 0) {
+    const { groups } = await api("/database/api/groups/search?q=");
+    $("#g-group").innerHTML = groups.map((g) => '<option value="' + esc(g.id) + '">' + esc(g.name) + "</option>").join("");
+  }
+}
+async function addGrant() {
+  const type = $("#g-type").value;
+  const principalId = type === "GROUP" ? $("#g-group").value : $("#g-principal").value.trim();
+  if (!principalId) return toast("请填写主体", "err");
+  try {
+    await api("/database/api/nodes/" + current.id + "/grants", { method: "PUT", body: {
+      grants: [{ principalType: type, principalId, role: $("#g-role").value }],
+    }});
+    ok("已授予"); renderTab();
+  } catch (e) { fail(e); }
+}
+async function revokeGrant(grantId) {
+  try {
+    await api("/database/api/nodes/" + current.id + "/grants/" + grantId, { method: "DELETE" });
+    ok("已收回"); renderTab();
+  } catch (e) { fail(e); }
+}
+
+/* ---------------- 文件 ---------------- */
+let currentFile = null;
+async function renderFilesTab(body) {
+  try {
+    const { files } = await api("/database/api/projects/" + current.id + "/files");
+    const rows = files.map((f) =>
+      '<tr class="file-row" onclick=\\'openFile("' + esc(f.path) + '")\\'>' +
+        '<td class="file-path">' + esc(f.path) + "</td>" +
+        '<td class="file-meta" style="text-align:right">' + f.size + " B</td></tr>").join("");
+    body.innerHTML =
+      '<div class="panel">' +
+        '<div class="inline-form" style="justify-content:space-between;margin-bottom:6px">' +
+          '<div class="section-title" style="margin:0">项目文件(' + files.length + ")</div>" +
+          (current.role !== "VIEW"
+            ? '<div class="inline-form" style="gap:6px">' +
+              '<button class="btn" onclick="newFileDialog()">+ 新建文件</button>' +
+              '<button class="btn btn-primary" onclick="document.getElementById(\\'upload-input\\').click()">上传文件</button>' +
+              '<input id="upload-input" type="file" class="hidden" onchange="doUpload(this)"/>' +
+              "</div>"
+            : "") +
+        "</div>" +
+        (files.length === 0 ? '<div class="quiet" style="padding:20px 0;text-align:center">空仓库 · 可新建或上传文件</div>'
+          : '<table class="list">' + rows + "</table>") +
+      "</div>" +
+      '<div id="file-editor"></div>';
+  } catch (e) { body.innerHTML = '<div class="panel quiet">' + esc(e.message) + "</div>"; }
+}
+async function newFileDialog() {
+  modal(
+    '<div class="modal-title">新建文件</div>' +
+    '<div class="form-row"><label class="form-label">路径</label>' +
+    '<input id="nf-path" class="input" style="font-family:var(--mono)" placeholder="docs/intro.md"/></div>' +
+    '<div class="form-row"><label class="form-label">内容</label>' +
+    '<textarea id="nf-content" rows="8" class="textarea" placeholder="内容…"></textarea></div>' +
+    '<div class="modal-actions"><button class="btn" onclick="closeModal()">取消</button>' +
+    '<button class="btn btn-primary" onclick="submitNewFile()">创建</button></div>'
+  );
+}
+
+/* 磁盘文件上传:文本走 utf8,含 NUL 字节判为二进制走 base64(与服务端一致)。 */
+function u8ToBase64(bytes) {
+  let bin = "";
+  const CHUNK = 0x8000;
+  for (let i = 0; i < bytes.length; i += CHUNK) {
+    bin += String.fromCharCode.apply(null, bytes.subarray(i, i + CHUNK));
+  }
+  return btoa(bin);
+}
+async function doUpload(input) {
+  const file = input.files && input.files[0];
+  input.value = "";
+  if (!file) return;
+  if (file.size > 10 * 1024 * 1024) return toast("文件超过 10MB 上限", "err");
+  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/" + current.id + "/file", { method: "PUT", body });
+    ok("已上传 " + file.name);
+    renderTab();
+  } catch (e) { fail(e); }
+}
+async function submitNewFile() {
+  try {
+    await api("/database/api/projects/" + current.id + "/file", { method: "PUT", body: {
+      path: $("#nf-path").value, content: $("#nf-content").value,
+    }});
+    closeModal(); ok("已创建"); renderTab();
+  } catch (e) { fail(e); }
+}
+async function openFile(path) {
+  try {
+    const f = await api("/database/api/projects/" + current.id + "/file?path=" + encodeURIComponent(path));
+    currentFile = f;
+    const canEdit = current.role !== "VIEW";
+    $("#file-editor").innerHTML =
+      '<div class="panel">' +
+        '<div class="inline-form" style="justify-content:space-between;margin-bottom:10px">' +
+          '<span class="file-meta">' + esc(f.path) + " @ " + esc(f.version) + "</span>" +
+          '<div class="inline-form" style="gap:6px">' +
+            '<a class="btn" href="/database/api/projects/' + current.id + '/file/raw?path=' +
+              encodeURIComponent(f.path) + '" download>下载</a>' +
+            '<button class="btn" onclick="showHistory()">历史</button>' +
+            (canEdit ? '<button class="btn btn-danger" onclick="deleteFile()">删除文件</button>' : "") +
+          "</div>" +
+        "</div>" +
+        (f.encoding === "base64"
+          ? '<div class="quiet">二进制文件(' + f.size + " B),不支持在线编辑</div>"
+          : '<textarea id="ef-content" rows="14" class="textarea" ' + (canEdit ? "" : "readonly") +
+            ">" + esc(f.content) + "</textarea>") +
+        (canEdit && f.encoding !== "base64"
+          ? '<div class="modal-actions"><button class="btn btn-primary" onclick="saveFile()">提交修改</button></div>'
+          : "") +
+        '<div id="conflict-zone"></div>' +
+      "</div>";
+  } catch (e) { fail(e); }
+}
+async function saveFile() {
+  try {
+    const r = await api("/database/api/projects/" + current.id + "/file/commits", { method: "POST", body: {
+      path: currentFile.path, baseVersion: currentFile.version, content: $("#ef-content").value,
+    }});
+    ok("已提交 " + r.version); await openFile(currentFile.path);
+  } catch (e) {
+    if (e.status === 409 && e.currentVersion) return showConflict(e.currentVersion);
+    fail(e);
+  }
+}
+async function showConflict(currentVersion) {
+  const { diff } = await api("/database/api/projects/" + current.id + "/file/diff?path=" +
+    encodeURIComponent(currentFile.path) + "&from=" + encodeURIComponent(currentFile.version) +
+    "&to=" + encodeURIComponent(currentVersion));
+  $("#conflict-zone").innerHTML =
+    '<div class="conflict-panel">' +
+      '<div class="conflict-title">冲突:他人已提交 ' + esc(currentVersion) + ",差异如下(你的基版 → 最新版)</div>" +
+      '<pre class="diff">' + esc(diff)
+        .replace(/^\\+(.*)$/gm, '<span class="add">+$1</span>')
+        .replace(/^-(.*)$/gm, '<span class="del">-$1</span>') + "</pre>" +
+      '<div class="conflict-note">请人工合并后,以最新内容为全文重新提交(基版将更新为 ' + esc(currentVersion) + ")</div>" +
+      '<div class="modal-actions"><button class="btn" onclick="acceptLatest(\\'' + esc(currentVersion) + '\\')">载入最新内容</button></div>' +
+    "</div>";
+  currentFile.version = currentVersion;
+}
+async function acceptLatest() { await openFile(currentFile.path); toast("已载入最新内容,请在此基础上合并", "info"); }
+async function deleteFile() {
+  if (!confirm("删除文件 " + currentFile.path + "?")) return;
+  try {
+    await api("/database/api/projects/" + current.id + "/file?path=" + encodeURIComponent(currentFile.path),
+      { method: "DELETE", body: { baseVersion: currentFile.version } });
+    ok("已删除"); currentFile = null; renderTab();
+  } catch (e) { fail(e); }
+}
+async function showHistory() {
+  const { history } = await api("/database/api/projects/" + current.id + "/file/history?path=" +
+    encodeURIComponent(currentFile.path));
+  modal(
+    '<div class="modal-title">版本历史</div>' +
+    '<div style="max-height:320px;overflow-y:auto">' +
+      history.map((v) =>
+        '<div style="border-top:1px solid #F5F5F4;padding:8px 0;font-size:12px">' +
+          '<span class="file-meta" style="color:var(--accent)">' + esc(v.version) + "</span> " + esc(v.message) +
+          '<div class="quiet">' + new Date(v.committedAt).toLocaleString("zh-CN") +
+          (v.author ? " · " + esc(v.author) : "") + "</div></div>").join("") +
+    "</div>" +
+    '<div class="modal-actions"><button class="btn" onclick="closeModal()">关闭</button></div>'
+  );
+}
+
+/* ---------------- 导出 ---------------- */
+let exportJobId = null;
+async function submitExport() {
+  try {
+    const r = await api("/database/api/projects/" + current.id + "/exports", { method: "POST", body: { target: $("#x-target").value } });
+    exportJobId = r.jobId;
+    $("#x-status").textContent = "任务 " + r.jobId.slice(0, 8) + "… 排队中";
+    pollExport();
+  } catch (e) { fail(e); }
+}
+async function pollExport() {
+  if (!exportJobId) return;
+  try {
+    const job = await api("/database/api/exports/" + exportJobId);
+    const el = $("#x-status");
+    if (!el) return;
+    if (job.status === "DONE") {
+      el.innerHTML = '完成 · <a href="/database/api/exports/' + exportJobId + '/download">下载</a>';
+    } else if (job.status === "FAILED") {
+      el.textContent = "失败:" + (job.error || "");
+    } else {
+      el.textContent = "状态:" + job.status + "…";
+      setTimeout(pollExport, 1000);
+    }
+  } catch { /* job 可能属于别的项目 */ }
+}
+
+/* ---------------- 启动 ---------------- */
+(async function init() {
+  const logoutBtn = $("#btn-logout");
+  if (logoutBtn) {
+    logoutBtn.addEventListener("click", async () => {
+      try { await fetch("/auth/logout", { method: "POST", credentials: "same-origin" }); } catch {}
+      location.href = "/database/admin";
+    });
+  }
+  try {
+    me = await api("/database/api/me");
+    if (me.isWebsiteAdmin) {
+      const btn = $("#btn-new-root");
+      btn.classList.remove("hidden");
+      btn.onclick = () => createDialog(null);
+    }
+  } catch (e) { /* 401 已由 api 处理跳转 */ }
+  await renderTree();
+})();
+</script>
+</body>
+</html>`;
+}
@@ -0,0 +1,129 @@
+/**
+ * 老师端用户前端托管(标准前后端分离):
+ *   GET /app/*                  — filelib-web(Svelte SPA)构建产物静态托管 + SPA 回退
+ *   GET /database/api/login-info — 登录页配置(org slug / dev 开关)
+ *   GET /app/dev-login{,-teacher} — DEV ONLY 一键登录(管理员 / 普通老师)
+ *
+ * 服务端不再渲染老师端页面;页面由独立前端工程 hub/filelib-web 产出。
+ */
+
+import fs from "node:fs";
+import path from "node:path";
+import fastifyStatic from "@fastify/static";
+import type { FastifyInstance } from "fastify";
+import type { PrismaClient } from "@prisma/client";
+import { SESSION_COOKIE_NAME, signSession } from "../../admin/auth/session.js";
+
+export interface TeacherAppConfig {
+  readonly prisma: PrismaClient;
+  readonly sessionSecret: string;
+  /** 飞书 OAuth 链接按 silo org slug 构造。 */
+  readonly siloOrganizationSlug: string;
+  /** DEV ONLY(双重门禁,见 database/plugin.ts):一键登录端点与按钮同进同退。 */
+  readonly allowDevLoginBypass: boolean;
+}
+
+export async function registerTeacherApp(
+  app: FastifyInstance,
+  config: TeacherAppConfig,
+): Promise<void> {
+  // 登录页配置(公开;org slug 本就在 OAuth URL 中,不构成敏感信息)。
+  app.get("/database/api/login-info", async () => ({
+    orgSlug: config.siloOrganizationSlug,
+    devLoginEnabled: config.allowDevLoginBypass,
+  }));
+
+  // 标准分离:静态托管 SPA 构建产物;非文件路径回退 index.html 交给前端。
+  const distDir = path.resolve(import.meta.dirname, "../../../filelib-web/dist");
+  if (fs.existsSync(path.join(distDir, "index.html"))) {
+    await app.register(fastifyStatic, { root: distDir, prefix: "/app/", decorateReply: true });
+    app.setNotFoundHandler((request, reply) => {
+      if (request.url.startsWith("/app")) {
+        return reply.sendFile("index.html", distDir);
+      }
+      return reply.status(404).send({ error: { code: "not_found", message: "not found" } });
+    });
+  } else {
+    app.log.warn({ distDir }, "filelib-web dist not found; build it with `npm run build --prefix filelib-web`");
+    app.get("/app", async (_request, reply) =>
+      reply
+        .status(503)
+        .type("text/plain")
+        .send("filelib-web 未构建。请先运行 npm run build --prefix hub/filelib-web"),
+    );
+  }
+
+  if (!config.allowDevLoginBypass) return;
+  registerDevLogins(app, config);
+}
+
+/** DEV ONLY:普通老师一键登录端点(双重门禁见 plugin.ts)。
+ *  老师端不提供管理员登录 —— 管理员从 /database/admin 进。 */
+function registerDevLogins(app: FastifyInstance, config: TeacherAppConfig): void {
+  app.get("/app/dev-login-teacher", async (_request, reply) => {
+    const prisma = config.prisma;
+    const organization = await prisma.organization.findFirst({
+      where: { status: "ACTIVE" },
+      select: { id: true },
+    });
+    if (organization === null) {
+      return reply.status(404).send({ error: { code: "no_org", message: "no active organization" } });
+    }
+
+    let membership = await prisma.organizationMembership.findFirst({
+      where: { organizationId: organization.id, role: "MEMBER", revokedAt: null },
+      select: { userId: true, organizationId: true },
+    });
+    if (membership === null) {
+      const teacher = await prisma.user.upsert({
+        where: { feishuOpenId: "ou_dev_teacher" },
+        update: {},
+        create: { feishuOpenId: "ou_dev_teacher", displayName: "测试老师" },
+      });
+      await prisma.organizationMembership.create({
+        data: { organizationId: organization.id, userId: teacher.id, role: "MEMBER" },
+      });
+      membership = { userId: teacher.id, organizationId: organization.id };
+    }
+
+    const connection = await prisma.organizationFeishuApplicationConnection.findFirst({
+      where: { organizationId: membership.organizationId, status: "ACTIVE" },
+      select: { id: true, organizationId: true },
+    });
+    if (connection === null) {
+      return reply.status(404).send({ error: { code: "no_connection", message: "no active Feishu connection for org" } });
+    }
+    let identity = await prisma.feishuUserIdentity.findFirst({
+      where: { userId: membership.userId, connectionId: connection.id },
+      select: { id: true, connectionId: true },
+    });
+    if (identity === null) {
+      identity = await prisma.feishuUserIdentity.create({
+        data: { connectionId: connection.id, userId: membership.userId, openId: "ou_dev_teacher" },
+        select: { id: true, connectionId: true },
+      });
+    }
+
+    setSessionCookie(reply, config.sessionSecret, membership.userId, identity.id, identity.connectionId, connection.organizationId);
+    reply.log.warn({ userId: membership.userId }, "DEV teacher-app login bypass (regular teacher) used");
+    return reply.redirect("/app");
+  });
+}
+
+function setSessionCookie(
+  reply: { setCookie: (name: string, value: string, opts: Record<string, unknown>) => void },
+  secret: string,
+  userId: string,
+  feishuIdentityId: string,
+  feishuConnectionId: string,
+  feishuOrganizationId: string,
+): void {
+  const token = signSession({ userId, feishuIdentityId, feishuConnectionId, feishuOrganizationId }, secret);
+  reply.setCookie(SESSION_COOKIE_NAME, token, {
+    path: "/",
+    httpOnly: true,
+    sameSite: "lax",
+    secure: false,
+    maxAge: 7 * 24 * 60 * 60,
+  });
+}
@@ -0,0 +1,138 @@
+/**
+ * 全局共享 UI 主题(老师端 /app、管理员后台 /database、文件页 /database/library)。
+ *
+ * 方向:高级简约、零视觉疲劳 —— 暖白底、发丝边框、近黑主按钮(唯一强调色)、
+ * 无渐变、无彩色、无阴影(弹层仅一丝)、Inter 全界面、克制的动效。
+ * 所有页面的设计令牌收敛于此,调色只改这里。
+ */
+
+export const UI_HEAD_FONTS = `
+  <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"/>
+`;
+
+export const UI_THEME_CSS = `
+  :root {
+    --bg: #FCFCFB;
+    --panel: #FFFFFF;
+    --sidebar: #F7F7F5;
+    --text: #1A1A18;
+    --text-2: #6B6A66;
+    --text-3: #9C9B96;
+    --border: #ECECE8;
+    --border-soft: #F1F1EE;
+    --hover: #F4F4F1;
+    --selected: #EBEBE7;
+    --accent: #1A1A18;
+    --accent-hover: #333330;
+    --danger: #A13A33;
+    --guide: #E9E9E5;
+    --diff-add-bg: #F3F6F2;
+    --diff-add-text: #4A6741;
+    --diff-del-bg: #F8F2F1;
+    --diff-del-text: #A13A33;
+    --sans: 'Inter', -apple-system, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
+    --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+    --shadow-pop: 0 4px 20px rgba(26,26,24,.07);
+  }
+  * { box-sizing: border-box; }
+  html, body { margin: 0; height: 100%; }
+  body {
+    font-family: var(--sans);
+    background: var(--bg); color: var(--text);
+    font-size: 14px; line-height: 1.65;
+    -webkit-font-smoothing: antialiased;
+  }
+  .hidden { display: none !important; }
+  h1, h2, h3 { margin: 0; }
+  a { color: var(--text); text-decoration: none; }
+  a:hover { text-decoration: underline; }
+
+  /* 按钮:近黑实心(主)/ 发丝边幽灵(次)/ 文字型(危险) */
+  .btn {
+    display: inline-flex; align-items: center; gap: 5px;
+    padding: 6px 14px; border-radius: 8px;
+    border: 1px solid var(--border); background: var(--panel);
+    color: var(--text); font-size: 12.5px; font-weight: 500;
+    cursor: pointer; transition: all 120ms ease; text-decoration: none;
+  }
+  .btn:hover { background: var(--hover); text-decoration: none; }
+  .btn-primary {
+    background: var(--accent); border-color: var(--accent); color: #fff;
+  }
+  .btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
+  .btn-danger { border-color: transparent; background: transparent; color: var(--danger); }
+  .btn-danger:hover { background: #A13A3312; }
+
+  /* 面板与标签 */
+  .panel {
+    background: var(--panel); border: 1px solid var(--border-soft);
+    border-radius: 10px; padding: 20px 22px;
+  }
+  .tag {
+    font-size: 10.5px; font-weight: 500; font-family: var(--mono);
+    padding: 2px 8px; border-radius: 999px;
+    border: 1px solid var(--border-soft); color: var(--text-3); background: var(--panel);
+  }
+  .tag-role { color: var(--text-2); border-color: var(--border); }
+
+  /* 页签 */
+  .tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--border-soft); margin-bottom: 18px; }
+  .tab {
+    padding: 8px 14px; font-size: 13px; color: var(--text-3);
+    border: none; background: none; cursor: pointer;
+    border-bottom: 2px solid transparent; margin-bottom: -1px;
+    transition: color 120ms ease;
+  }
+  .tab:hover { color: var(--text); }
+  .tab.active { color: var(--text); font-weight: 600; border-bottom-color: var(--accent); }
+
+  /* 表单 */
+  .input, .select, .textarea {
+    width: 100%; padding: 7px 11px; border-radius: 8px;
+    border: 1px solid var(--border); background: var(--panel);
+    font-size: 13px; color: var(--text); font-family: inherit;
+    outline: none; transition: border-color 120ms ease;
+  }
+  .input:focus, .select:focus, .textarea:focus { border-color: var(--accent); }
+  .textarea { font-family: var(--mono); font-size: 12.5px; line-height: 1.75; resize: vertical; }
+  .form-label { display: block; font-size: 11.5px; color: var(--text-3); margin-bottom: 4px; }
+  .form-row { margin-bottom: 12px; }
+  .inline-form { display: flex; gap: 8px; align-items: center; }
+  .inline-form .input { flex: 1; }
+
+  /* 表格 */
+  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(--text-3); padding: 4px 0; }
+  table.list td { padding: 8px 0; border-top: 1px solid var(--border-soft); }
+  table.list tr:first-child td { border-top: none; }
+
+  /* 弹层 */
+  .modal-mask {
+    position: fixed; inset: 0; z-index: 40;
+    background: rgba(26,26,24,.3);
+    display: flex; align-items: center; justify-content: center; padding: 16px;
+  }
+  .modal-card {
+    width: 100%; max-width: 430px; background: var(--panel);
+    border: 1px solid var(--border-soft); border-radius: 14px; padding: 22px;
+    box-shadow: var(--shadow-pop);
+  }
+  .modal-title { font-size: 15px; font-weight: 600; margin-bottom: 14px; }
+  .modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
+  .toast {
+    border-radius: 8px; padding: 8px 16px; font-size: 12.5px; color: #fff;
+    background: #333230; max-width: 330px;
+  }
+  .toast-err { background: #7E2C26; }
+  #toast-root { position: fixed; bottom: 18px; right: 18px; z-index: 50; display: flex; flex-direction: column; gap: 8px; }
+
+  .quiet { color: var(--text-3); font-size: 12.5px; }
+  .divider { border-top: 1px solid var(--border-soft); margin: 14px 0; }
+  .section-title { font-size: 13px; font-weight: 600; margin-bottom: 10px; }
+  .section-note { font-size: 11.5px; color: var(--text-3); margin-top: 6px; }
+  .file-path { font-family: var(--mono); font-size: 12.5px; color: var(--text); }
+  .file-meta { font-size: 11px; color: var(--text-3); font-family: var(--mono); }
+  .link-danger { color: var(--danger); font-size: 12.5px; background: none; border: none; cursor: pointer; padding: 0; }
+  .link-danger:hover { text-decoration: underline; }
+`;
@@ -0,0 +1,227 @@
+/**
+ * 文件库 HTTP 端点集成测试(真实 Postgres + Fastify inject)。
+ * 覆盖:401 门禁、D8(404/403)、8.1 授权矩阵、文件冲突流(409+审计)、导出状态机。
+ * 运行前提:本地 PG 且已 migrate(同 filelib-tree.test.ts)。
+ */
+import { afterAll, beforeEach, describe, expect, it } from "vitest";
+import Fastify, { type FastifyInstance } from "fastify";
+import fastifyCookie from "@fastify/cookie";
+import { prisma, resetDb, DEFAULT_ORG_ID } from "./helpers.js";
+import { signSession, SESSION_COOKIE_NAME } from "../../src/admin/auth/session.js";
+import { registerFileLibRoutes } from "../../src/database/routes/filelibRoutes.js";
+import { registerFileRoutes } from "../../src/database/routes/fileRoutes.js";
+import { createStaticGroupResolver } from "../../src/database/filelib/groupResolver.js";
+import { createInMemoryVersionStore } from "../../src/database/filelib/versionStore.js";
+import { createManifestStubAdapter } from "../../src/database/filelib/exportService.js";
+import type { FileLibRouteDeps } from "../../src/database/filelib/routeShared.js";
+
+const SECRET = "filelib-test-secret";
+
+let app: FastifyInstance;
+let deps: FileLibRouteDeps;
+
+function cookie(userId: string, openId: string): string {
+  return `${SESSION_COOKIE_NAME}=${signSession({ userId, feishuOpenId: openId }, SECRET)}`;
+}
+const ADMIN_COOKIE = () => cookie("u_admin", "ou_admin");
+const ALICE_COOKIE = () => cookie("u_alice", "ou_alice");
+const BOB_COOKIE = () => cookie("u_bob", "ou_bob");
+
+async function seedUsers(): Promise<void> {
+  await prisma.user.create({ data: { id: "u_admin", feishuOpenId: "ou_admin", displayName: "Admin" } });
+  await prisma.user.create({ data: { id: "u_alice", feishuOpenId: "ou_alice", displayName: "Alice" } });
+  await prisma.user.create({ data: { id: "u_bob", feishuOpenId: "ou_bob", displayName: "Bob" } });
+  await prisma.organizationMembership.create({
+    data: { organizationId: DEFAULT_ORG_ID, userId: "u_admin", role: "OWNER" },
+  });
+  await prisma.organizationMembership.create({
+    data: { organizationId: DEFAULT_ORG_ID, userId: "u_alice", role: "MEMBER" },
+  });
+  await prisma.organizationMembership.create({
+    data: { organizationId: DEFAULT_ORG_ID, userId: "u_bob", role: "MEMBER" },
+  });
+}
+
+beforeEach(async () => {
+  await resetDb();
+  await seedUsers();
+  const versionStore = createInMemoryVersionStore();
+  deps = {
+    prisma,
+    sessionSecret: SECRET,
+    organizationId: DEFAULT_ORG_ID,
+    storageRoot: "/tmp/filelib-it",
+    groupResolver: createStaticGroupResolver({}),
+    versionStore,
+    exportAdapters: [createManifestStubAdapter(versionStore)],
+  };
+  app = Fastify({ logger: false });
+  await app.register(fastifyCookie);
+  await registerFileLibRoutes(app, deps);
+  await registerFileRoutes(app, deps);
+  await app.ready();
+});
+
+afterAll(async () => {
+  await app?.close();
+});
+
+async function createRoot(cookieHeader: string, name = "物理"): Promise<string> {
+  const res = await app.inject({
+    method: "POST", url: "/database/api/nodes",
+    headers: { cookie: cookieHeader },
+    payload: { parentId: null, kind: "FOLDER", name },
+  });
+  expect(res.statusCode).toBe(201);
+  return res.json().node.id as string;
+}
+
+describe("filelib http · 门禁与 D8", () => {
+  it("无 session → 401", async () => {
+    const res = await app.inject({ method: "GET", url: "/database/api/nodes" });
+    expect(res.statusCode).toBe(401);
+  });
+
+  it("/me:OWNER → isWebsiteAdmin=true;MEMBER → false", async () => {
+    const admin = await app.inject({ method: "GET", url: "/database/api/me", headers: { cookie: ADMIN_COOKIE() } });
+    expect(admin.json().isWebsiteAdmin).toBe(true);
+    const alice = await app.inject({ method: "GET", url: "/database/api/me", headers: { cookie: ALICE_COOKIE() } });
+    expect(alice.json().isWebsiteAdmin).toBe(false);
+  });
+
+  it("root 创建:MEMBER 403;无权限节点 GET 404、VIEW 越权 DELETE 403", async () => {
+    const forbidden = await app.inject({
+      method: "POST", url: "/database/api/nodes",
+      headers: { cookie: ALICE_COOKIE() },
+      payload: { parentId: null, kind: "FOLDER", name: "越权" },
+    });
+    expect(forbidden.statusCode).toBe(403);
+
+    const rootId = await createRoot(ADMIN_COOKIE());
+    const notFound = await app.inject({ method: "GET", url: `/database/api/nodes/${rootId}`, headers: { cookie: BOB_COOKIE() } });
+    expect(notFound.statusCode).toBe(404);
+
+    await app.inject({
+      method: "PUT", url: `/database/api/nodes/${rootId}/grants`,
+      headers: { cookie: ADMIN_COOKIE() },
+      payload: { grants: [{ principalType: "USER", principalId: "u_alice", role: "VIEW" }] },
+    });
+    const visible = await app.inject({ method: "GET", url: `/database/api/nodes/${rootId}`, headers: { cookie: ALICE_COOKIE() } });
+    expect(visible.statusCode).toBe(200);
+    expect(visible.json().node.role).toBe("VIEW");
+    const denied = await app.inject({ method: "DELETE", url: `/database/api/nodes/${rootId}`, headers: { cookie: ALICE_COOKIE() } });
+    expect(denied.statusCode).toBe(403);
+  });
+});
+
+describe("filelib http · 8.1 授权矩阵", () => {
+  it("非创建者的 MANAGE 授 MANAGE → 403;创建者可授;creator grant 不可收回", async () => {
+    const rootId = await createRoot(ADMIN_COOKIE());
+    // admin(创建者)授 alice MANAGE → 允许
+    const put1 = await app.inject({
+      method: "PUT", url: `/database/api/nodes/${rootId}/grants`,
+      headers: { cookie: ADMIN_COOKIE() },
+      payload: { grants: [{ principalType: "USER", principalId: "u_alice", role: "MANAGE" }] },
+    });
+    expect(put1.statusCode).toBe(200);
+    // alice(MANAGE 但非创建者)授 bob MANAGE → 403
+    const put2 = await app.inject({
+      method: "PUT", url: `/database/api/nodes/${rootId}/grants`,
+      headers: { cookie: ALICE_COOKIE() },
+      payload: { grants: [{ principalType: "USER", principalId: "u_bob", role: "MANAGE" }] },
+    });
+    expect(put2.statusCode).toBe(403);
+    expect(put2.json().error.code).toBe("only_creator_can_grant_manage");
+    // alice 授 bob EDIT → 允许
+    const put3 = await app.inject({
+      method: "PUT", url: `/database/api/nodes/${rootId}/grants`,
+      headers: { cookie: ALICE_COOKIE() },
+      payload: { grants: [{ principalType: "USER", principalId: "u_bob", role: "EDIT" }] },
+    });
+    expect(put3.statusCode).toBe(200);
+    // creator grant 不可收回
+    const list = await app.inject({ method: "GET", url: `/database/api/nodes/${rootId}/grants`, headers: { cookie: ADMIN_COOKIE() } });
+    const creatorGrant = list.json().grants.find((g: { isCreatorGrant: boolean }) => g.isCreatorGrant);
+    const revoke = await app.inject({
+      method: "DELETE", url: `/database/api/nodes/${rootId}/grants/${creatorGrant.id}`,
+      headers: { cookie: ADMIN_COOKIE() },
+    });
+    expect(revoke.statusCode).toBe(403);
+    expect(revoke.json().error.code).toBe("cannot_touch_creator");
+  });
+});
+
+describe("filelib http · 文件冲突流", () => {
+  it("上传→读→提交→409 冲突→conflict 审计落库", async () => {
+    const res = await app.inject({
+      method: "POST", url: "/database/api/nodes",
+      headers: { cookie: ADMIN_COOKIE() },
+      payload: { parentId: null, kind: "PROJECT", name: "TH-141" },
+    });
+    const projectId = res.json().node.id as string;
+
+    const up = await app.inject({
+      method: "PUT", url: `/database/api/projects/${projectId}/file`,
+      headers: { cookie: ADMIN_COOKIE() },
+      payload: { path: "docs/a.md", content: "第一版" },
+    });
+    expect(up.statusCode).toBe(201);
+
+    const read = await app.inject({
+      method: "GET", url: `/database/api/projects/${projectId}/file?path=docs/a.md`,
+      headers: { cookie: ADMIN_COOKIE() },
+    });
+    expect(read.json().content).toBe("第一版");
+    const v1 = read.json().version as string;
+
+    const commit = await app.inject({
+      method: "POST", url: `/database/api/projects/${projectId}/file/commits`,
+      headers: { cookie: ADMIN_COOKIE() },
+      payload: { path: "docs/a.md", baseVersion: v1, content: "第二版" },
+    });
+    expect(commit.statusCode).toBe(200);
+
+    const conflict = await app.inject({
+      method: "POST", url: `/database/api/projects/${projectId}/file/commits`,
+      headers: { cookie: ADMIN_COOKIE() },
+      payload: { path: "docs/a.md", baseVersion: v1, content: "幽灵版" },
+    });
+    expect(conflict.statusCode).toBe(409);
+    expect(conflict.json().error.currentVersion).toBe(commit.json().version);
+
+    const audit = await prisma.auditEntry.findFirst({
+      where: { organizationId: DEFAULT_ORG_ID, action: "file.conflict_detected" },
+    });
+    expect(audit).not.toBeNull();
+  });
+});
+
+describe("filelib http · 导出状态机", () => {
+  it("提交 → 轮询 DONE → 下载 manifest", async () => {
+    const res = await app.inject({
+      method: "POST", url: "/database/api/nodes",
+      headers: { cookie: ADMIN_COOKIE() },
+      payload: { parentId: null, kind: "PROJECT", name: "导出源" },
+    });
+    const projectId = res.json().node.id as string;
+    const submit = await app.inject({
+      method: "POST", url: `/database/api/projects/${projectId}/exports`,
+      headers: { cookie: ADMIN_COOKIE() },
+      payload: { target: "manifest" },
+    });
+    expect(submit.statusCode).toBe(202);
+    const jobId = submit.json().jobId as string;
+
+    let job: { status: string } = { status: "QUEUED" };
+    for (let i = 0; i < 50 && job.status !== "DONE" && job.status !== "FAILED"; i += 1) {
+      await new Promise((r) => setTimeout(r, 50));
+      const poll = await app.inject({ method: "GET", url: `/database/api/exports/${jobId}`, headers: { cookie: ADMIN_COOKIE() } });
+      job = poll.json();
+    }
+    expect(job.status).toBe("DONE");
+
+    const download = await app.inject({ method: "GET", url: `/database/api/exports/${jobId}/download`, headers: { cookie: ADMIN_COOKIE() } });
+    expect(download.statusCode).toBe(200);
+    expect(download.body).toContain("manifest");
+  });
+});
@@ -0,0 +1,183 @@
+/**
+ * 文件库树服务集成测试(真实 Postgres)。
+ * 覆盖:root 创建规则、父级 EDIT+ 创建、D8(404/403)、D11 toggle 冻结、
+ * D12 move(环拒绝/目标授权/并发对移)、D14 兄弟名冲突、D15 祖先删除整支隐藏、
+ * D17 breadcrumb 占位、provisioning 状态机、审计落库。
+ * 运行前提:本地 PG(paradigm:paradigm@127.0.0.1:5432/cph_hub_test)且已 migrate。
+ */
+import { beforeEach, describe, expect, it } from "vitest";
+import { prisma, resetDb, DEFAULT_ORG_ID } from "./helpers.js";
+import {
+  createNode,
+  renameNode,
+  moveNode,
+  softDeleteNode,
+  breadcrumb,
+  getEffectiveRole,
+  listChildren,
+  type FileLibActor,
+  type TreeServiceDeps,
+} from "../../src/database/filelib/treeService.js";
+import { createStaticGroupResolver } from "../../src/database/filelib/groupResolver.js";
+import { createInMemoryVersionStore } from "../../src/database/filelib/versionStore.js";
+import { FileLibError } from "../../src/database/filelib/model.js";
+
+const ADMIN: FileLibActor = { userId: "u_admin", isWebsiteAdmin: true };
+const ALICE: FileLibActor = { userId: "u_alice", isWebsiteAdmin: false };
+const BOB: FileLibActor = { userId: "u_bob", isWebsiteAdmin: false };
+
+function deps(): TreeServiceDeps {
+  return {
+    prisma,
+    groupResolver: createStaticGroupResolver({ u_bob: ["g_physics"] }),
+    versionStore: createInMemoryVersionStore(),
+    organizationId: DEFAULT_ORG_ID,
+    storageRoot: "/tmp/filelib-test",
+  };
+}
+
+async function seedUsers(): Promise<void> {
+  for (const [id, openId] of [["u_admin", "ou_admin"], ["u_alice", "ou_alice"], ["u_bob", "ou_bob"]] as const) {
+    await prisma.user.create({ data: { id, feishuOpenId: openId, displayName: id } });
+  }
+}
+
+beforeEach(async () => {
+  await resetDb();
+  await seedUsers();
+});
+
+describe("treeService · 创建规则", () => {
+  it("root 仅网站管理员可建;创建者自动 MANAGE", async () => {
+    await expect(createNode(deps(), ALICE, { parentId: null, kind: "FOLDER", name: "根" }))
+      .rejects.toMatchObject({ statusCode: 403 });
+    const root = await createNode(deps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    expect(await getEffectiveRole(deps(), ADMIN, root.id)).toBe("MANAGE");
+  });
+
+  it("非 root:父级无权限 404、仅 VIEW 403、EDIT+ 可建;项目下禁止子节点", async () => {
+    const root = await createNode(deps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    await expect(createNode(deps(), BOB, { parentId: root.id, kind: "FOLDER", name: "必修一" }))
+      .rejects.toMatchObject({ statusCode: 404 });
+    await createNode(deps(), ADMIN, {
+      parentId: null, kind: "FOLDER", name: "化学",
+      grants: [{ principalType: "USER", principalId: "u_alice", role: "VIEW" }],
+    });
+    await expect(createNode(deps(), ALICE, { parentId: (await listChildren(deps(), ALICE, null))[0]!.id, kind: "FOLDER", name: "x" }))
+      .rejects.toMatchObject({ statusCode: 403 });
+    const child = await createNode(deps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "必修一" });
+    const project = await createNode(deps(), ADMIN, { parentId: child.id, kind: "PROJECT", name: "TH-141" });
+    expect(project.provisionStatus).toBe("READY"); // provisioning 状态机:mock init 后 READY
+    expect(project.storageDir).toContain(project.id);
+    await expect(createNode(deps(), ADMIN, { parentId: project.id, kind: "FOLDER", name: "非法" }))
+      .rejects.toMatchObject({ statusCode: 400, code: "invalid_parent" });
+  });
+
+  it("D14:活跃兄弟名大小写不敏感唯一 → 409", async () => {
+    await createNode(deps(), ADMIN, { parentId: null, kind: "FOLDER", name: "Physics" });
+    await expect(createNode(deps(), ADMIN, { parentId: null, kind: "FOLDER", name: "physics" }))
+      .rejects.toMatchObject({ statusCode: 409, code: "name_conflict" });
+  });
+});
+
+describe("treeService · D11 独立权限开关", () => {
+  it("关闭时项目级非创建者 grant 冻结,创建者仍 MANAGE", async () => {
+    const project = await createNode(deps(), ADMIN, {
+      parentId: null, kind: "PROJECT", name: "TH-141",
+      grants: [{ principalType: "USER", principalId: "u_alice", role: "EDIT" }],
+    });
+    await expect(getEffectiveRole(deps(), ALICE, project.id))
+      .rejects.toMatchObject({ statusCode: 404 }); // 冻结 = 无权限 = D8 不可见
+    expect(await getEffectiveRole(deps(), ADMIN, project.id)).toBe("MANAGE");
+    await prisma.fileLibProjectSettings.update({
+      where: { nodeId: project.id },
+      data: { independentPermissionsEnabled: true },
+    });
+    expect(await getEffectiveRole(deps(), ALICE, project.id)).toBe("EDIT"); // 恢复
+  });
+});
+
+describe("treeService · rename / move / delete", () => {
+  it("rename 需 MANAGE;兄弟名冲突 409", async () => {
+    const root = await createNode(deps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    await createNode(deps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "必修一" });
+    const other = await createNode(deps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "必修二" });
+    await expect(renameNode(deps(), ADMIN, other.id, "必修一"))
+      .rejects.toMatchObject({ statusCode: 409 });
+    await expect(renameNode(deps(), BOB, other.id, "改名"))
+      .rejects.toMatchObject({ statusCode: 404 });
+    expect((await renameNode(deps(), ADMIN, other.id, "选修")).name).toBe("选修");
+  });
+
+  it("move:拒绝移入自己的子树;目标父需 EDIT+;Group 授权链路生效", async () => {
+    const root = await createNode(deps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    const a = await createNode(deps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "A" });
+    const b = await createNode(deps(), ADMIN, { parentId: a.id, kind: "FOLDER", name: "B" });
+    await expect(moveNode(deps(), ADMIN, a.id, b.id))
+      .rejects.toMatchObject({ statusCode: 400, code: "move_into_own_subtree" });
+
+    // bob 在 g_physics 组;组在 root 上有 EDIT → bob 可把 B 移到 root(D12:本节点 MANAGE + 目标父 EDIT)
+    await createNode(deps(), ADMIN, {
+      parentId: null, kind: "FOLDER", name: "共享区",
+      grants: [{ principalType: "GROUP", principalId: "g_physics", role: "EDIT" }],
+    });
+    const shared = (await listChildren(deps(), ADMIN, null)).find((n) => n.name === "共享区")!;
+    await expect(moveNode(deps(), BOB, b.id, shared.id))
+      .rejects.toMatchObject({ statusCode: 404 }); // bob 对 B 无 MANAGE → 404
+    await prisma.fileLibGrant.create({
+      data: { organizationId: DEFAULT_ORG_ID, nodeId: b.id, principalType: "GROUP", principalId: "g_physics", role: "MANAGE" },
+    });
+    const moved = await moveNode(deps(), BOB, b.id, shared.id);
+    expect(moved.parentId).toBe(shared.id);
+    const sharedRow = await prisma.fileLibNode.findUnique({ where: { id: shared.id } });
+    expect(moved.pathIds).toBe(`${sharedRow!.pathIds}/${b.id}`);
+  });
+
+  it("move 到 root 需网站管理员", async () => {
+    const root = await createNode(deps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    const a = await createNode(deps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "A" });
+    await createNode(deps(), ADMIN, {
+      parentId: null, kind: "FOLDER", name: "给爱丽丝",
+      grants: [{ principalType: "USER", principalId: "u_alice", role: "MANAGE" }],
+    });
+    await expect(moveNode(deps(), ALICE, a.id, null))
+      .rejects.toMatchObject({ statusCode: 404 }); // ALICE 对 a 无权限
+    await expect(moveNode(deps(), ADMIN, a.id, null)).resolves.toMatchObject({ parentId: null });
+  });
+
+  it("D15:祖先删除 → 整支后代不可见(404)", async () => {
+    const root = await createNode(deps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    const a = await createNode(deps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "A" });
+    await softDeleteNode(deps(), ADMIN, root.id);
+    await expect(getEffectiveRole(deps(), ADMIN, a.id)).rejects.toMatchObject({ statusCode: 404 });
+    await expect(renameNode(deps(), ADMIN, a.id, "B")).rejects.toMatchObject({ statusCode: 404 });
+  });
+});
+
+describe("treeService · D17 breadcrumb", () => {
+  it("无 View 的祖先只给占位,不泄露名字", async () => {
+    const root = await createNode(deps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    const a = await createNode(deps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "A" });
+    await prisma.fileLibGrant.create({
+      data: { organizationId: DEFAULT_ORG_ID, nodeId: a.id, principalType: "USER", principalId: "u_alice", role: "VIEW" },
+    });
+    const crumbs = await breadcrumb(deps(), ALICE, a.id);
+    expect(crumbs).toHaveLength(2);
+    expect(crumbs[0]).toMatchObject({ id: null, name: null }); // root 对 ALICE 不可见
+    expect(crumbs[1]).toMatchObject({ id: a.id, name: "A" });
+  });
+});
+
+describe("treeService · 审计落库(C3)", () => {
+  it("创建/改名/移动/删除均写 AuditEntry", async () => {
+    const root = await createNode(deps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    await renameNode(deps(), ADMIN, root.id, "物理学");
+    await softDeleteNode(deps(), ADMIN, root.id);
+    const actions = (await prisma.auditEntry.findMany({
+      where: { organizationId: DEFAULT_ORG_ID },
+      select: { action: true },
+      orderBy: { createdAt: "asc" },
+    })).map((e) => e.action);
+    expect(actions).toEqual(["folder.create", "folder.rename", "folder.delete"]);
+  });
+});
@@ -0,0 +1,40 @@
+/**
+ * 文件路径安全单测(Metis 安全红线:穿越/.git/分隔符/深度)。
+ */
+import { describe, expect, it } from "vitest";
+import { validateFilePath, FILE_PATH_MAX_DEPTH, FILE_PATH_MAX_LENGTH } from "../../src/database/filelib/fileService.js";
+import { FileLibError } from "../../src/database/filelib/model.js";
+
+describe("validateFilePath · 路径安全", () => {
+  it("正常相对路径通过(含 CJK 与多级)", () => {
+    expect(validateFilePath("a.md")).toBe("a.md");
+    expect(validateFilePath("docs/讲义/第一课.md")).toBe("docs/讲义/第一课.md");
+    expect(validateFilePath("a/b/c/d.txt")).toBe("a/b/c/d.txt");
+  });
+
+  it("拒绝穿越:.. 段、绝对路径", () => {
+    expect(() => validateFilePath("../x")).toThrowError(FileLibError);
+    expect(() => validateFilePath("a/../../x")).toThrowError(FileLibError);
+    expect(() => validateFilePath("/etc/passwd")).toThrowError(FileLibError);
+  });
+
+  it("拒绝 .git 段与点段", () => {
+    expect(() => validateFilePath(".git")).toThrowError(FileLibError);
+    expect(() => validateFilePath("a/.git/config")).toThrowError(FileLibError);
+    expect(() => validateFilePath("./a.md")).toThrowError(FileLibError);
+  });
+
+  it("拒绝反斜杠、控制字符、空段(双斜杠/尾斜杠)", () => {
+    expect(() => validateFilePath("a\\b.md")).toThrowError(FileLibError);
+    expect(() => validateFilePath("a\nb.md")).toThrowError(FileLibError);
+    expect(() => validateFilePath("a//b.md")).toThrowError(FileLibError);
+    expect(() => validateFilePath("a/b/")).toThrowError(FileLibError);
+  });
+
+  it("拒绝空路径、超长、超深", () => {
+    expect(() => validateFilePath("")).toThrowError(FileLibError);
+    expect(() => validateFilePath("a".repeat(FILE_PATH_MAX_LENGTH + 1))).toThrowError(FileLibError);
+    expect(() => validateFilePath(Array(FILE_PATH_MAX_DEPTH + 1).fill("d").join("/"))).toThrowError(FileLibError);
+    expect(validateFilePath(Array(FILE_PATH_MAX_DEPTH).fill("d").join("/"))).toContain("d/");
+  });
+});
@@ -0,0 +1,49 @@
+/**
+ * 命名规则(D14)单测。
+ */
+import { describe, expect, it } from "vitest";
+import { FileLibError, nameKey, normalizeNodeName, NODE_NAME_MAX_LENGTH } from "../../src/database/filelib/model.js";
+
+describe("normalizeNodeName · D14", () => {
+  it("trim 空白", () => {
+    expect(normalizeNodeName("  物理必修一  ")).toBe("物理必修一");
+  });
+
+  it("NFC 归一化(分解形式 → 合成形式)", () => {
+    expect(normalizeNodeName("é")).toBe("é");
+  });
+
+  it("CJK 与常见字符原样通过", () => {
+    expect(normalizeNodeName("TH-141 表面张力 (上)")).toBe("TH-141 表面张力 (上)");
+  });
+
+  it("空名/全空白 → invalid_name", () => {
+    expect(() => normalizeNodeName("")).toThrowError(FileLibError);
+    expect(() => normalizeNodeName("   ")).toThrowError(FileLibError);
+  });
+
+  it("超长 → invalid_name", () => {
+    expect(() => normalizeNodeName("a".repeat(NODE_NAME_MAX_LENGTH + 1))).toThrowError(FileLibError);
+    expect(normalizeNodeName("a".repeat(NODE_NAME_MAX_LENGTH))).toHaveLength(NODE_NAME_MAX_LENGTH);
+  });
+
+  it("拒绝斜杠与反斜杠", () => {
+    expect(() => normalizeNodeName("a/b")).toThrowError(FileLibError);
+    expect(() => normalizeNodeName("a\\b")).toThrowError(FileLibError);
+  });
+
+  it("拒绝控制字符", () => {
+    expect(() => normalizeNodeName("a\nb")).toThrowError(FileLibError);
+    expect(() => normalizeNodeName("a\tb")).toThrowError(FileLibError);
+    expect(() => normalizeNodeName("a\0b")).toThrowError(FileLibError);
+  });
+});
+
+describe("nameKey · 大小写不敏感比较键", () => {
+  it("ASCII 折叠", () => {
+    expect(nameKey("Physics")).toBe("physics");
+  });
+  it("CJK 不变", () => {
+    expect(nameKey("物理")).toBe("物理");
+  });
+});
@@ -0,0 +1,159 @@
+/**
+ * 纯权限 reducer 单测(契约 P6 / D11 / 2.3)。
+ * 矩阵覆盖:个人/Group/祖先继承/max 取最高/不降权/空权限/toggle 冻结;
+ * 外加确定性随机化不变量(单调性:任何可用 grant 都不超过 effective)。
+ */
+import { describe, expect, it } from "vitest";
+import { checkAccess, effectiveRole, type EffectiveRoleInput, type FileLibGrantFact } from "../../src/database/filelib/permission.js";
+
+const base: EffectiveRoleInput = {
+  nodeId: "N",
+  nodeKind: "FOLDER",
+  ancestorIds: ["A", "R"], // N ⊂ A ⊂ R
+  independentPermissionsEnabled: false,
+  userId: "u1",
+  groupIds: ["g1"],
+  grants: [],
+};
+
+function grant(partial: Partial<FileLibGrantFact>): FileLibGrantFact {
+  return {
+    nodeId: "N",
+    principalType: "USER",
+    principalId: "u1",
+    role: "VIEW",
+    isCreatorGrant: false,
+    ...partial,
+  };
+}
+
+describe("effectiveRole · 契约 P6 矩阵", () => {
+  it("无任何 grant → null(无权限)", () => {
+    expect(effectiveRole(base)).toBeNull();
+  });
+
+  it("个人直接 grant 在 self 上 → 生效", () => {
+    expect(effectiveRole({ ...base, grants: [grant({ role: "EDIT" })] })).toBe("EDIT");
+  });
+
+  it("Group grant 且用户在组内 → 生效", () => {
+    expect(effectiveRole({ ...base, grants: [grant({ principalType: "GROUP", principalId: "g1", role: "MANAGE" })] })).toBe("MANAGE");
+  });
+
+  it("Group grant 但用户不在组内 → null", () => {
+    expect(effectiveRole({ ...base, grants: [grant({ principalType: "GROUP", principalId: "g9" })] })).toBeNull();
+  });
+
+  it("祖先链上的 grant 向下继承", () => {
+    expect(effectiveRole({ ...base, grants: [grant({ nodeId: "A", role: "EDIT" })] })).toBe("EDIT");
+    expect(effectiveRole({ ...base, grants: [grant({ nodeId: "R", role: "VIEW" })] })).toBe("VIEW");
+  });
+
+  it("取最高:个人低权限 + Group 高权限 → 高权限(个人不能降权)", () => {
+    const grants = [
+      grant({ role: "VIEW" }),
+      grant({ principalType: "GROUP", principalId: "g1", role: "MANAGE" }),
+    ];
+    expect(effectiveRole({ ...base, grants })).toBe("MANAGE");
+  });
+
+  it("取最高:链上多处 grant,最高者胜", () => {
+    const grants = [
+      grant({ nodeId: "R", role: "MANAGE" }),
+      grant({ nodeId: "A", role: "VIEW" }),
+      grant({ nodeId: "N", role: "EDIT" }),
+    ];
+    expect(effectiveRole({ ...base, grants })).toBe("MANAGE");
+  });
+
+  it("链外节点的 grant 不参与", () => {
+    expect(effectiveRole({ ...base, grants: [grant({ nodeId: "X", role: "MANAGE" })] })).toBeNull();
+  });
+
+  it("他人的个人 grant 不参与", () => {
+    expect(effectiveRole({ ...base, grants: [grant({ principalId: "u2", role: "MANAGE" })] })).toBeNull();
+  });
+});
+
+describe("effectiveRole · D11 独立权限开关", () => {
+  const project: EffectiveRoleInput = { ...base, nodeKind: "PROJECT", nodeId: "P" };
+
+  it("开关关闭:项目级非创建者 grant 冻结", () => {
+    const grants = [grant({ nodeId: "P", role: "EDIT" })];
+    expect(effectiveRole({ ...project, grants })).toBeNull();
+  });
+
+  it("开关关闭:创建者 grant 仍生效", () => {
+    const grants = [grant({ nodeId: "P", role: "MANAGE", isCreatorGrant: true })];
+    expect(effectiveRole({ ...project, grants })).toBe("MANAGE");
+  });
+
+  it("开关关闭:祖先链 grant 不受影响", () => {
+    const grants = [
+      grant({ nodeId: "P", role: "MANAGE" }), // 冻结
+      grant({ nodeId: "A", role: "VIEW" }),   // 生效
+    ];
+    expect(effectiveRole({ ...project, grants })).toBe("VIEW");
+  });
+
+  it("开关开启:项目级 grant 恢复参与", () => {
+    const grants = [grant({ nodeId: "P", role: "EDIT" })];
+    expect(effectiveRole({ ...project, independentPermissionsEnabled: true, grants })).toBe("EDIT");
+  });
+
+  it("文件夹忽略开关(self grant 照常参与)", () => {
+    const grants = [grant({ nodeId: "N", role: "EDIT" })];
+    expect(effectiveRole({ ...base, grants })).toBe("EDIT");
+  });
+});
+
+describe("effectiveRole · 随机化不变量", () => {
+  // 确定性 LCG,替代 property-based 框架(不新增依赖)。
+  function lcg(seed: number): () => number {
+    let s = seed;
+    return () => {
+      s = (s * 1103515245 + 12345) % 2147483648;
+      return s / 2147483648;
+    };
+  }
+  const roles = ["VIEW", "EDIT", "MANAGE"] as const;
+
+  it("effective 恰为所有可用 grant 的最高秩(单调、顺序无关)", () => {
+    const rand = lcg(42);
+    for (let round = 0; round < 200; round += 1) {
+      const nodes = ["N", "A", "R", "X"];
+      const principals = ["u1", "u2", "g1", "g9"];
+      const grants: FileLibGrantFact[] = Array.from({ length: Math.floor(rand() * 12) }, () => {
+        const principalId = principals[Math.floor(rand() * principals.length)]!;
+        return grant({
+          nodeId: nodes[Math.floor(rand() * nodes.length)]!,
+          principalType: principalId.startsWith("g") ? "GROUP" : "USER",
+          principalId,
+          role: roles[Math.floor(rand() * roles.length)]!,
+        });
+      });
+      const input: EffectiveRoleInput = { ...base, grants };
+      const applicableRanks = grants
+        .filter((g) => ["N", "A", "R"].includes(g.nodeId))
+        .filter((g) => (g.principalType === "USER" ? g.principalId === "u1" : g.principalId === "g1"))
+        .map((g) => ({ VIEW: 1, EDIT: 2, MANAGE: 3 })[g.role]);
+      const expected = applicableRanks.length === 0 ? 0 : Math.max(...applicableRanks);
+      const actual = effectiveRole(input);
+      expect(actual === null ? 0 : { VIEW: 1, EDIT: 2, MANAGE: 3 }[actual]).toBe(expected);
+      // 顺序无关
+      expect(effectiveRole({ ...input, grants: [...grants].reverse() })).toBe(actual);
+    }
+  });
+});
+
+describe("checkAccess · D8 语义", () => {
+  it("无权限 → not_found(404 不泄露)", () => {
+    expect(checkAccess(null, "VIEW")).toEqual({ allowed: false, reason: "not_found" });
+  });
+  it("权限不足 → forbidden(403)", () => {
+    expect(checkAccess("VIEW", "EDIT")).toEqual({ allowed: false, reason: "forbidden" });
+  });
+  it("权限足够 → allowed 并带回实际角色", () => {
+    expect(checkAccess("MANAGE", "EDIT")).toEqual({ allowed: true, role: "MANAGE" });
+  });
+});
@@ -0,0 +1,120 @@
+/**
+ * InMemory VersionStore 语义单测(契约 C1:S1/S2/S7 + 计划 D16/S4)。
+ * mock 必须如实表达:冲突走返回值、baseVersion=null 表新建、init 幂等、
+ * 文件级版本互不影响、同仓库写操作串行。
+ */
+import { describe, expect, it } from "vitest";
+import { createInMemoryVersionStore } from "../../src/database/filelib/versionStore.js";
+import { FileLibError } from "../../src/database/filelib/model.js";
+
+const DIR = "/repos/p1";
+
+describe("InMemoryVersionStore · C1 语义", () => {
+  it("init 幂等(S7);未 init 的仓库操作报 repo_not_found", async () => {
+    const store = createInMemoryVersionStore();
+    await expect(store.head(DIR, "a.md")).rejects.toThrowError(FileLibError);
+    await store.init(DIR);
+    await store.init(DIR); // 幂等,不报错、不重建
+    await store.commit(DIR, "a.md", { baseVersion: null, content: "hello" });
+    await store.init(DIR); // 已有内容后再 init 也不清空
+    expect(await store.head(DIR, "a.md")).toBe("v1");
+  });
+
+  it("新建(baseVersion null)→ ok;head/read 命中", async () => {
+    const store = createInMemoryVersionStore();
+    await store.init(DIR);
+    const r = await store.commit(DIR, "a.md", { baseVersion: null, content: "v1 内容", author: "u1" });
+    expect(r).toEqual({ status: "ok", version: "v1" });
+    expect((await store.read(DIR, "a.md")).toString()).toBe("v1 内容");
+  });
+
+  it("对已存在文件再次『新建』 → conflict(S2)", async () => {
+    const store = createInMemoryVersionStore();
+    await store.init(DIR);
+    await store.commit(DIR, "a.md", { baseVersion: null, content: "1" });
+    const r = await store.commit(DIR, "a.md", { baseVersion: null, content: "2" });
+    expect(r).toEqual({ status: "conflict", currentVersion: "v1" });
+  });
+
+  it("baseVersion 落后于当前 → conflict 并带 currentVersion(S1)", async () => {
+    const store = createInMemoryVersionStore();
+    await store.init(DIR);
+    await store.commit(DIR, "a.md", { baseVersion: null, content: "1" });
+    const ok = await store.commit(DIR, "a.md", { baseVersion: "v1", content: "2" });
+    expect(ok.status).toBe("ok");
+    const stale = await store.commit(DIR, "a.md", { baseVersion: "v1", content: "3" });
+    expect(stale).toEqual({ status: "conflict", currentVersion: "v2" });
+  });
+
+  it("正确 base 连续提交;旧版本仍可读", async () => {
+    const store = createInMemoryVersionStore();
+    await store.init(DIR);
+    await store.commit(DIR, "a.md", { baseVersion: null, content: "一" });
+    await store.commit(DIR, "a.md", { baseVersion: "v1", content: "二" });
+    expect((await store.read(DIR, "a.md", "v1")).toString()).toBe("一");
+    expect((await store.read(DIR, "a.md")).toString()).toBe("二");
+  });
+
+  it("D16 文件级版本:文件 A 的提交不影响文件 B 的 base", async () => {
+    const store = createInMemoryVersionStore();
+    await store.init(DIR);
+    await store.commit(DIR, "a.md", { baseVersion: null, content: "A1" });
+    const b1 = await store.commit(DIR, "b.md", { baseVersion: null, content: "B1" });
+    await store.commit(DIR, "a.md", { baseVersion: "v1", content: "A2" }); // A 前进到 v3
+    // B 仍以自己的 head 为 base,不受 A 推进影响
+    const b2 = await store.commit(DIR, "b.md", {
+      baseVersion: b1.status === "ok" ? b1.version : "",
+      content: "B2",
+    });
+    expect(b2.status).toBe("ok");
+  });
+
+  it("remove:正确 base → ok;head 随后 404;stale base → conflict", async () => {
+    const store = createInMemoryVersionStore();
+    await store.init(DIR);
+    await store.commit(DIR, "a.md", { baseVersion: null, content: "1" });
+    await store.commit(DIR, "a.md", { baseVersion: "v1", content: "2" });
+    expect(await store.remove(DIR, "a.md", "v1")).toEqual({ status: "conflict", currentVersion: "v2" });
+    expect((await store.remove(DIR, "a.md", "v2")).status).toBe("ok");
+    await expect(store.head(DIR, "a.md")).rejects.toThrowError(FileLibError);
+    await expect(store.remove(DIR, "a.md", "v3")).rejects.toThrowError(FileLibError);
+  });
+
+  it("history 新→旧,支持 limit;list 排除已删并按前缀过滤", async () => {
+    const store = createInMemoryVersionStore();
+    await store.init(DIR);
+    await store.commit(DIR, "docs/a.md", { baseVersion: null, content: "1", message: "初版" });
+    await store.commit(DIR, "docs/a.md", { baseVersion: "v1", content: "2", message: "二版" });
+    await store.commit(DIR, "other/b.md", { baseVersion: null, content: "x" });
+    const h = await store.history(DIR, "docs/a.md");
+    expect(h.map((v) => v.message)).toEqual(["二版", "初版"]);
+    expect((await store.history(DIR, "docs/a.md", 1)).map((v) => v.message)).toEqual(["二版"]);
+    expect((await store.list(DIR)).map((f) => f.path)).toEqual(["docs/a.md", "other/b.md"]);
+    expect((await store.list(DIR, "docs/")).map((f) => f.path)).toEqual(["docs/a.md"]);
+    await store.remove(DIR, "other/b.md", "v3");
+    expect((await store.list(DIR)).map((f) => f.path)).toEqual(["docs/a.md"]);
+  });
+
+  it("S4 同仓库写串行:并发同 base 提交,恰好一成一冲突", async () => {
+    const store = createInMemoryVersionStore();
+    await store.init(DIR);
+    await store.commit(DIR, "a.md", { baseVersion: null, content: "1" });
+    const [r1, r2] = await Promise.all([
+      store.commit(DIR, "a.md", { baseVersion: "v1", content: "x" }),
+      store.commit(DIR, "a.md", { baseVersion: "v1", content: "y" }),
+    ]);
+    const statuses = [r1.status, r2.status].sort();
+    expect(statuses).toEqual(["conflict", "ok"]);
+  });
+
+  it("diff 输出含增删行", async () => {
+    const store = createInMemoryVersionStore();
+    await store.init(DIR);
+    await store.commit(DIR, "a.md", { baseVersion: null, content: "keep\nold" });
+    await store.commit(DIR, "a.md", { baseVersion: "v1", content: "keep\nnew" });
+    const d = await store.diff(DIR, "a.md", "v1", "v2");
+    expect(d).toContain("-old");
+    expect(d).toContain("+new");
+    expect(d).toContain(" keep");
+  });
+});
@@ -0,0 +1,304 @@
+# 文件库系统 · 接口契约与决策（v0.1 我方提案）
+
+> **读者**：版本团队、Group 团队、审计团队、平台方、编辑团队、产品。
+> **用法**：本文档是我方（文件库）提出的对齐基线。所有决策带 `D-x` 编号、所有契约带 `C-x` 编号，评审时请按编号引用（"D5 我们不同意，建议……"）。评审通过后本文件冻结，各方照此实现；任何变更走文档修订，不接受口头对齐。
+> **状态**：v0.1 提案，未冻结。
+
+---
+
+## 1. 系统边界与分工
+
+| 子系统 | 负责方 | 与我方关系 |
+|---|---|---|
+| 文件库（目录树 / 权限引擎 / 内容存储 / 对外 API / 前端） | **我方** | — |
+| 版本能力（git 化、commit、diff、历史） | 版本团队 | 交付 **npm 工具包**，我方在自有存储上集成（见 C1） |
+| Group 系统（全局嵌套组） | Group 团队 | 我方**实时消费**其查询接口（见 C2） |
+| 审计系统（存储 / 查询 / 保留） | 审计团队 | 我方**上报事件**（见 C3）；查询界面归审计方 |
+| 平台身份（登录 / 角色） | 平台方 | 我方验签消费角色（见 C4） |
+| 在线编辑与冲突合并 UI（需求 2.5） | 编辑团队 | **消费我方文件 API**（见第 9 节） |
+| 导出工具 | 已有工具 | 我方按需传参调用（参数清单 OPEN-6） |
+
+**内容归属**：文件内容（git 仓库）物理存储在文件库自己的服务器上，由我方管理；版本团队不持有任何数据，只交付代码。
+
+## 2. 总体架构
+
+```
+编辑团队(2.5 UI) ──┐
+其他消费方        ──┤ HTTP + JWT
+                   ▼
+        ┌─────────────────────┐
+        │   文件库服务(我方)  │
+        │  目录树 + 权限引擎   │──── 实时查询 ──▶ Group 系统(C2)
+        │  文件 API + 授权 API │──── 验签 JWT ──▶ 平台身份(C4)
+        └─────────┬───────────┘
+                  │ import(函数调用)
+                  ▼
+        ┌─────────────────────┐      outbox 中继(at-least-once)
+        │ 版本工具包(C1,npm)  │         ┌──────────────────────▶ 审计系统(C3)
+        │ 操作我方磁盘上的     │         │
+        │ git 仓库(内容归我方)│         ▼
+        └─────────────────────┘      我方 DB:业务表 + outbox 表(同事务)
+```
+
+## 3. 决策总表
+
+| 编号 | 决策 | 一句话理由 | 影响方 |
+|---|---|---|---|
+| D1 | 文件库后端 TypeScript + Fastify + Prisma(PostgreSQL)；前端 React | 与平台技术心智一致 | 我方 |
+| D2 | 文件内容物理存储在文件库服务器，版本能力以 npm 包交付 | 需求 2.1"项目初始化为 Git 仓库"，仓库是项目的存储 | 版本团队 |
+| D3 | 版本包冲突用**返回值**表达，异常仅用于系统错误 | 冲突是正常业务流，不是故障 | 版本、编辑 |
+| D4 | Group 查询**实时调用、不缓存** | 需求 3.3"成员变更实时生效" | Group |
+| D5 | 审计走"本地 outbox + 后台中继"满足"同事务或可靠消息" | 跨服务做不到真同事务，outbox 是最简单的可靠方案 | 审计 |
+| D6 | 平台身份用 JWT(RS256)验签，平台角色 `platform.admin` 映射网站管理员 | 无状态、无需每次回调平台 | 平台 |
+| D7 | 权限管理规则按第 8 节补齐（2.4 空洞的我方版本） | 需求 2.4 为空，必须先有规则才能写码 | 产品确认 |
+| D8 | 无 View 权限时 API 返回 **404**（不泄露存在性）；有 View 但操作越权返回 403 | 防资源探测 | 所有消费方 |
+| D9 | 软删除：删除即打标隐藏，所有 API 默认不可见 | 需求 2.6/3.3 | 我方 |
+| D10 | 导出为**异步任务**（提交返回 job，轮询取结果） | 导出耗时不确定，同步会超时 | 编辑/前端 |
+
+---
+
+## 4. C1 · 版本工具包契约（给版本团队）
+
+**交付形态**：npm 包（TypeScript，自带类型定义），运行在文件库后端进程内。实现技术（isomorphic-git / nodegit / 其他）由版本团队自选，**本契约只约束接口与语义**。
+
+### 4.1 接口签名
+
+```typescript
+export type VersionId = string; // 不透明字符串,调用方不得解析(当前为 git commit hash)
+
+export interface CommitRequest {
+  /** 编辑的起始版本;null 表示新建文件 */
+  baseVersion: VersionId | null;
+  content: string | Buffer;     // 文本用 string(UTF-8),二进制用 Buffer
+  message?: string;             // 缺省由包自动生成
+  author?: string;              // 操作者标识,写入版本记录
+}
+
+export type CommitResult =
+  | { status: "ok"; version: VersionId }
+  | { status: "conflict"; currentVersion: VersionId };
+
+export interface VersionInfo {
+  version: VersionId;
+  message: string;
+  author?: string;
+  committedAt: string;          // ISO 8601
+}
+
+export interface FileEntry { path: string; size: number; }
+
+export interface VersionStore {
+  init(projectDir: string): Promise<void>;                                   // S7: 幂等
+  list(projectDir: string, prefix?: string): Promise<FileEntry[]>;
+  head(projectDir: string, filePath: string): Promise<VersionId>;            // 文件不存在 → FileNotFoundError
+  read(projectDir: string, filePath: string, at?: VersionId): Promise<Buffer>; // 缺省读最新
+  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>; // unified diff
+  history(projectDir: string, filePath: string, limit?: number): Promise<VersionInfo[]>;
+}
+```
+
+### 4.2 语义规则
+
+| 编号 | 规则 |
+|---|---|
+| S1 | **冲突不是异常**。`baseVersion` 落后于当前版本时返回 `{status:"conflict"}`；异常仅用于 IO 故障、仓库损坏等系统错误 |
+| S2 | `baseVersion: null` = 新建；路径已存在时返回 conflict |
+| S3 | 二进制文件与文本同样版本化；`diff` 仅保证对文本有意义，二进制可返回占位说明 |
+| S4 | 包必须保证**同一 projectDir 的写操作（commit/remove）串行化**，调用方可并发调用 |
+| S5 | 存储布局不透明：我方不直接读写仓库目录，一切经包接口 |
+| S6 | 在线编辑仅针对文本文件（需求 2.5）；二进制材料走上传/下载 |
+| S7 | `init` 幂等，重复调用不报错、不重建 |
+| S8 | 规模假设：单项目文件数千级、单文件 10MB 以内，超出另行对齐 |
+
+---
+
+## 5. C2 · Group 查询契约（给 Group 团队)
+
+**形态**：HTTP + JSON。我方只读，不写 Group 系统任何数据（需求 3.3）。
+
+### 5.1 接口
+
+```
+GET /groups/resolve-member-groups?userId={userId}
+  → { "groupIds": ["g1","g2",...] }
+  # 权限计算专用:用户直接所属的全部 group + 这些 group 的所有祖先 group,去重。
+  # 方向是"向祖先"收集(需求 3.2:权限沿 group 树向下传递)。
+
+GET /groups/search?q={keyword}&limit={n}
+  → [{ "id":"g1","name":"物理教研组","breadcrumb":"总部 / 教研 / 物理" }]
+  # 前端授权选择器用。
+
+GET /groups/{groupId}
+  → { "id":"g1","name":"物理教研组","parentId":"g0","status":"active" }
+```
+
+### 5.2 语义规则
+
+| 编号 | 规则 |
+|---|---|
+| G1 | `groupId` 为不透明、全局唯一字符串 |
+| G2 | resolve 只含**祖先方向**，不含子孙；用户无所属时返回空数组 |
+| G3 | 软删除的 group 不出现在任何接口结果中 |
+| G4 | **实时性**：我方每次权限计算都实时调用 resolve，不缓存；Group 方成员变更须即刻在 resolve 结果中可见（需求 3.3） |
+| G5 | 文件夹/项目的授权记录只存在文件库，Group 系统不感知（需求 3.3） |
+| G6 | 可用性：resolve 位于我方**每一次受保护请求**的权限计算路径上，其可用性即文件库可用性 → 需要 Group 方给出延迟与可用性承诺（OPEN-1） |
+
+---
+
+## 6. C3 · 审计上报契约（给审计团队）
+
+### 6.1 机制（满足需求 5.1"同事务或可靠消息"）
+
+1. 我方在每个关键写操作的**同一数据库事务**内，向本地 `audit_outbox` 表写入事件；
+2. 后台中继进程读取 outbox，POST 到审计系统 `POST /audit/events`，**at-least-once**，失败重试；
+3. 审计系统按 `eventId` **幂等去重**；
+4. 中继只负责送达，业务操作不因审计系统不可用而失败（但事件绝不丢）。
+
+### 6.2 事件信封（补齐需求 5.3 空缺的字段定义）
+
+```json
+{
+  "eventId": "01J…",              // 我方生成的唯一 id,幂等键
+  "schemaVersion": 1,
+  "occurredAt": "2026-07-21T10:00:00.000Z",
+  "sourceService": "filelib",
+  "actor": { "userId": "u123", "platformRole": "teacher" },
+  "action": "permission.grant",   // 见 6.3 词汇表
+  "object": { "type": "folder", "id": "n456", "path": "/物理/必修一" },
+  "result": "success",            // success | failure
+  "errorCode": null,
+  "detail": { /* 按 action 而定的负载,如 grant 的 {principalType, principalId, role} */ }
+}
+```
+
+### 6.3 action 词汇表（文件库范围，对照需求 5.2）
+
+| action | 需求 5.2 对应 |
+|---|---|
+| `folder.create` / `folder.rename` / `folder.move` / `folder.delete` | 创建/删除/移动/重命名文件夹 |
+| `project.create` / `project.rename` / `project.move` / `project.delete` | 同上（项目） |
+| `permission.grant` / `permission.update` / `permission.revoke` | 权限变更（detail 含个人/Group、Manage/Edit/View） |
+| `project.independent_permission.enable` / `.disable` / `.change` | 项目独立权限开启/关闭/变更 |
+| `file.upload` / `file.rename` / `file.delete` | 材料文件管理 |
+| `file.commit` | 文件编辑提交（含冲突合并后提交；编辑经我方 API 落盘，故由我方上报） |
+| `file.conflict_detected` | 冲突检测发生（detail 含起始版本与冲突版本） |
+| `export.run` | 导出操作 |
+| `admin.force_adjust` | 网站管理员强制权限调整（高危） |
+
+Group 相关动作（创建/删除/成员变更/嵌套变更）由 **Group 系统自行上报**；归档类动作待归档功能定案后补充（OPEN-4）。
+
+### 6.4 边界
+
+- 审计的存储、防篡改、保留策略（需求 5.5 ≥180 天）、查询接口与查询界面，全部归审计系统；
+- 文件库前端**不内嵌**审计查询页（若产品要求嵌入，OPEN-8 再议）。
+
+---
+
+## 7. C4 · 平台身份契约（给平台方）
+
+1. 调用方在 `Authorization: Bearer <JWT>` 中携带平台签发的令牌（RS256）；平台通过 JWKS endpoint 分发公钥，我方只做验签 + 过期检查，**不回调平台、不建用户表**；
+2. claims 约定：`sub`（用户 id，全局唯一）、`roles`（平台角色数组）、`exp`、`iss`；
+3. **角色映射**：`roles` 含 `platform.admin` → 文件库"网站管理员"；其余合法令牌 → 普通用户；无令牌/验签失败/过期 → `401`；
+4. 网站管理员权限范围：创建根目录、强制权限调整（必审计）、以及平台方赋予的其他高危操作；**不隐式穿透**各节点的业务权限（要管理某子树须被显式授权或走强制调整并留痕）；
+5. 前端登录跳转平台 SSO，具体流程由前端与平台方另行对齐。
+
+---
+
+## 8. 权限规则 · 2.4 补齐版（D7，产品确认后冻结）
+
+### 8.1 创建者与授权矩阵
+
+| 角色 | 能授/改/收的级别 | 限制 |
+|---|---|---|
+| **节点创建者** | Manage / Edit / View | 自身 Manage 不可被收回（转让 OPEN-3） |
+| **Manage 持有者** | Edit / View | **不可**授予 Manage；**不可**修改/收回创建者的任何权限 |
+| **Edit / View** | 无授权能力 | — |
+| **网站管理员** | 任意（走 `admin.force_adjust`，必审计） | 不属于日常授权路径 |
+
+### 8.2 各级别能力清单
+
+| 能力 | View | Edit | Manage |
+|---|:---:|:---:|:---:|
+| 浏览树 / 读文件 / 下载 | ✓ | ✓ | ✓ |
+| 导出 | ✓ | ✓ | ✓ |
+| 创建子文件夹/项目（需求：父级 Edit+） | | ✓ | ✓ |
+| 编辑文本文件 / 上传 / 删改项目内材料 | | ✓ | ✓ |
+| 重命名 / 移动 / 删除**本节点** | | | ✓ |
+| 授权管理（按 8.1 矩阵） | | | ✓ |
+| 项目独立权限开关 | | | ✓ |
+
+### 8.3 其余规则
+
+- **P3 根目录**：仅网站管理员可创建；创建时必须指定 ≥1 名 Manage 持有者（可以不是创建者本人），保证每棵子树都有权限链起点；
+- **P4 空权限创建**：允许；此时仅创建者可见可用；
+- **P5 项目独立权限**：默认关闭（仅继承父链）；开启后项目级授权参与 max 计算；关闭时项目级授权**冻结不删除**，重新开启即恢复；
+- **P6 计算规则**（与需求 2.3 一致的形式化）：
+
+  `effective(user, R) = max { grant.role | grant ∈ grants(s, r), s ∈ {user} ∪ resolveGroups(user), r ∈ {R} ∪ ancestors(R) }`，无 grant → 无权限。个人低权限**不构成降权**（只取最高，不做减法）；
+- **P7 可见性**：对某节点无任何权限的用户，该节点对其不可见（API 行为见 D8）。
+
+---
+
+## 9. 文件库对外 API（消费方：编辑团队及其他）
+
+**约定**：REST + JSON + JWT（C4）；统一错误信封 `{ "error": { "code", "message", "details?" } }`；D8 可见性语义（无 View → 404；越权操作 → 403）。
+
+### 9.1 树与节点
+
+```
+GET    /nodes?parentId={id}          # 列子节点(缺省列根);仅返回有 View 的
+POST   /nodes                        # 创建文件夹/项目 {parentId, type, name, grants?[]}
+                                     #   parentId=null 仅网站管理员;type=project 时自动调 C1.init
+GET    /nodes/{id}                   # 节点详情 + 我的 effective 权限 + breadcrumb
+PATCH  /nodes/{id}                   # 重命名/移动 {name?, parentId?} (需本节点 Manage)
+DELETE /nodes/{id}                   # 软删除(需 Manage)
+```
+
+### 9.2 授权
+
+```
+GET    /nodes/{id}/grants            # 授权列表(需 Manage)
+PUT    /nodes/{id}/grants            # 批量授予/修改 [{principalType:user|group, principalId, role}]
+DELETE /nodes/{id}/grants/{grantId}  # 收回
+GET    /nodes/{id}/effective-permission  # 当前用户在此节点的生效权限(自查)
+PUT    /projects/{id}/independent-permission  # {enabled: bool} 独立权限开关
+```
+
+### 9.3 文件内容（编辑团队的主接口）
+
+```
+GET    /projects/{id}/files?prefix=              # 文件清单
+GET    /projects/{id}/files/{path}               # → {content, version} 编辑起手式:拿到起始版本
+PUT    /projects/{id}/files/{path}               # 新建/上传 {content} (需 Edit)
+POST   /projects/{id}/files/{path}/commits       # 提交编辑 {baseVersion, content, message?}
+                                                 # → 200 {version} | 409 {currentVersion}
+GET    /projects/{id}/files/{path}/diff?from=&to= # 冲突时取差异(unified diff)
+GET    /projects/{id}/files/{path}/history       # 版本历史
+DELETE /projects/{id}/files/{path}               # {baseVersion} (需 Edit)
+```
+
+**冲突合并流程（配合编辑团队 2.5）**：编辑 UI 用 `GET files/{path}` 记录 `version` → 用户编辑 → `POST commits` 带 `baseVersion` → 若 `409`，UI 用 `diff?from=base&to=current` 拉取差异，展示三方合并区 → 用户写出最终内容后再次 `POST commits`（baseVersion 换为 currentVersion）。
+
+### 9.4 导出
+
+```
+POST /projects/{id}/exports {target, params}  → {jobId}   # D10 异步
+GET  /exports/{jobId}                         → {status, downloadUrl?}
+```
+
+---
+
+## 10. OPEN 清单（需对方/产品确认，不阻塞我方开工）
+
+| 编号 | 事项 | 等谁 |
+|---|---|---|
+| OPEN-1 | Group resolve 的延迟/可用性 SLA 数值 | Group 团队 |
+| OPEN-2 | 审计事件投递的 endpoint、鉴权方式、保留期确认（需求建议 ≥180 天） | 审计团队 |
+| OPEN-3 | 创建者离职/转让后 Manage 链如何处理 | 产品 |
+| OPEN-4 | 归档功能（需求已划线"暂时未定"） | 产品 |
+| OPEN-5 | 二进制材料的大小上限与在线预览诉求 | 产品 |
+| OPEN-6 | 导出工具的参数清单（需求原文"待对接时确认"） | 导出工具方 |
+| OPEN-7 | 软删除的恢复入口、"后台标签"管理界面归属 | 产品 |
+| OPEN-8 | 网站管理员强制调整的前端入口（我方做还是平台做）、审计查询页是否嵌入文件库前端 | 产品 |