Merge branch 'chore/sidebar-240'

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

.gitignore

@@ -15,3 +15,5 @@ node_modules/
 
 # OS / editor
 .DS_Store
+
+.omo/

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

@@ -240,7 +240,10 @@
   {:else if shown === null}
     <div class="quiet py-[18px] text-center">加载中…</div>
   {:else}
-    <table class="list">
+    <!-- 内容不可断行(头像名/id/日期/下拉)可能超宽:溢出时横向滚动,
+         而不是把表格挤变形或顶出 panel 右边界(文件预览打开时主区变窄)。 -->
+    <div class="overflow-x-auto">
+      <table class="list">
       <thead>
         <tr>
           <th class="whitespace-nowrap pr-4">成员</th>
@@ -295,7 +298,7 @@
                 {/if}
               </td>
               <td class="file-meta whitespace-nowrap pr-4">{fmtDate(g.createdAt)}</td>
-              <td class="whitespace-nowrap text-right">
+              <td class="whitespace-nowrap pr-2 text-right">
                 {#if !g.isCreatorGrant && canManage}
                   <button class="link-danger inline-flex items-center gap-1" onclick={() => void revoke(g)}>
                     <Icon name="trash" size={12} /> 删除
@@ -306,7 +309,8 @@
           {/each}
         {/if}
       </tbody>
-    </table>
+      </table>
+    </div>
   {/if}
 </div>
 

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

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

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

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

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

@@ -16,6 +16,12 @@
     layers: "m12 2 9 5-9 5-9-5 9-5Zm9 11-9 5-9-5m18 5-9 5-9-5",
     clock: "M12 22a10 10 0 1 0 0-20 10 10 0 0 0 0 20Zm0-14v6l4 2",
     minus: "M5 12h14",
+    download: "M12 3v12m0 0 4-4m-4 4-4-4M4 17v2a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2v-2",
+    refresh: "M21 12a9 9 0 1 1-2.64-6.36M21 3v6h-6",
+    arrowLeft: "M19 12H5m0 0 6 6m-6-6 6-6",
+    info: "M12 22a10 10 0 1 0 0-20 10 10 0 0 0 0 20Zm0-10v6m0-11v.5",
+    shield: "M12 3l8 3v6c0 4.5-3.2 7.7-8 9-4.8-1.3-8-4.5-8-9V6l8-3Z",
+    folder: "M3 7a2 2 0 0 1 2-2h4l2 2h8a2 2 0 0 1 2 2v9a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V7Z",
     // 已归档(软删)标记用;与"删除"区分 —— 数据仍在,只是打了 archivedAt。
     archive: "M3 8h18v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8Zm1-5h16l1 5H3l1-5Zm5 9h6",
     restore: "M3 12a9 9 0 1 0 3-6.7M3 4v4.5h4.5",

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

@@ -1,7 +1,7 @@
 <script lang="ts">
   import type { Snippet } from "svelte";
 
-  let { title, onclose, children }: { title: string; onclose: () => void; children: Snippet } = $props();
+  let { title, onclose, children, maxW = 440 }: { title: string; onclose: () => void; children: Snippet; maxW?: number } = $props();
 </script>
 
 <div
@@ -9,7 +9,7 @@
   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="max-h-[88vh] w-full overflow-y-auto rounded-2xl border border-line-soft bg-panel p-6 shadow-[0_4px_20px_rgba(26,26,24,.07)]" style="max-width:{maxW}px">
     <div class="mb-4 text-[15px] font-semibold">{title}</div>
     {@render children()}
   </div>

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

@@ -88,7 +88,7 @@
 {#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-[1120px] px-9 py-9">
+  <div class="mx-auto max-w-[1400px] px-9 py-9">
     <div class="mb-2 text-[12.5px] text-ink-3">
       {#each crumbs as c, i (i)}
         {#if i > 0}<span class="mx-1 text-line">/</span>{/if}

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

@@ -6,29 +6,29 @@
   import type { ExportJob, NodeDetail } from "./types.js";
   import Modal from "./Modal.svelte";
 
-  let { node }: { node: NodeDetail } = $props();
+  let { node, ondeleted }: { node: NodeDetail; ondeleted?: () => void } = $props();
 
   let showEditDesc = $state(false);
   let descDraft = $state("");
   let exportJob = $state<ExportJob | null>(null);
+  let deleting = $state(false);
 
   const canEdit = $derived(node.role === "MANAGE" || node.role === "EDIT");
   const canManage = $derived(node.role === "MANAGE");
   const roleLabel = $derived(ROLE_LABEL[node.role]);
 
-  /** 独立权限开关(仅 PROJECT;关闭时只继承父级权限,创建者除外)。 */
-  async function toggleIndependent(): Promise<void> {
+  /** 删除(进回收站,可恢复;ADR-0031)。MANAGE 专属,与右键菜单同语义。 */
+  async function deleteNode(): Promise<void> {
+    if (!confirm(`删除「${node.name}」?移入回收站,可在回收站恢复。`)) return;
+    deleting = true;
     try {
-      await api(`/database/api/projects/${node.id}/independent-permission`, {
-        method: "PUT",
-        body: { enabled: !node.independentPermission },
-      });
-      toastOk("已切换");
-      currentNode.update((n) =>
-        n !== null && n.id === node.id ? { ...n, independentPermission: !node.independentPermission } : n,
-      );
+      await api(`/database/api/nodes/${node.id}`, { method: "DELETE" });
+      toastOk("已移入回收站");
+      ondeleted?.();
     } catch (e) {
       toastErr(e instanceof Error ? e.message : String(e));
+    } finally {
+      deleting = false;
     }
   }
 
@@ -109,18 +109,8 @@
     <div>更新时间 <b class="font-semibold text-ink">{new Date(node.updatedAt).toLocaleString("zh-CN")}</b></div>
   </div>
 
-  <!-- 独立权限与导出都只对 PROJECT 有意义(FOLDER 是透明组织节点,ADR-0021)。 -->
+  <!-- 导出只对 PROJECT 有意义(FOLDER 是透明组织节点,ADR-0021)。 -->
   {#if node.kind === "PROJECT"}
-    <div class="my-4 border-t border-line-soft"></div>
-    <div class="flex flex-wrap items-center gap-2.5">
-      <span class="quiet">独立权限</span>
-      <b class="text-[13px]">{node.independentPermission ? "开启" : "关闭"}</b>
-      {#if canManage}
-        <button class="btn" onclick={toggleIndependent}>{node.independentPermission ? "关闭" : "开启"}</button>
-      {/if}
-      <span class="quiet">关闭时仅继承父级权限(创建者除外)</span>
-    </div>
-
     <div class="my-4 border-t border-line-soft"></div>
 
     <div class="section-title mb-2">导出</div>
@@ -140,6 +130,17 @@
       {/if}
     </div>
   {/if}
+
+  {#if canManage}
+    <div class="my-4 border-t border-line-soft"></div>
+
+    <div class="flex items-center justify-between">
+      <span class="quiet">删除后移入回收站,可恢复</span>
+      <button class="btn btn-danger disabled:opacity-50" onclick={deleteNode} disabled={deleting}>
+        {deleting ? "删除中…" : `删除此${node.kind === "PROJECT" ? "项目" : "文件夹"}`}
+      </button>
+    </div>
+  {/if}
 </div>
 
 {#if showEditDesc}

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

@@ -18,6 +18,8 @@ export interface BreadcrumbEntry {
   readonly id: string | null;
   readonly name: string | null;
   readonly kind: NodeKind;
+  /** 该节点对调用者的 effective role;无 View 为 null。 */
+  readonly role: Role | null;
 }
 
 export interface NodeDetail {
@@ -28,7 +30,6 @@ export interface NodeDetail {
   readonly description: string | null;
   readonly role: Role;
   readonly provisionStatus: "PROVISIONING" | "READY" | "FAILED";
-  readonly independentPermission: boolean;
   readonly createdAt: string;
   readonly updatedAt: string;
 }
@@ -131,9 +132,17 @@ export interface UserSearchResult {
   readonly avatarUrl: string | null;
 }
 
+/** 回收站条目(GET /database/api/bin)。 */
+export interface BinEntry {
+  readonly id: string;
+  readonly parentId: string | null;
+  readonly kind: NodeKind;
+  readonly name: string;
+  readonly deletedAt: string;
+}
+
 /** 管理后台概览统计(GET /database/api/stats)。 */
-export interface DashboardStats {
-  readonly folders: number;
+export interface DashboardStats {  readonly folders: number;
   readonly projects: number;
   readonly files: number;
   readonly grants: number;

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

@@ -1,21 +1,70 @@
 <script lang="ts">
-  /** 老师端。未登录显示登录卡片;登录后直接是文件库浏览器。 */
+  /** 老师端。未登录显示登录卡片;登录后是带左栏导航的文件库(ADR-0031)。 */
   import { onMount } from "svelte";
   import { me, authChecked } from "$lib/stores.js";
-  import { loadSession } from "$lib/session.js";
+  import { loadSession, logout } from "$lib/session.js";
   import LoginView from "$lib/LoginView.svelte";
-  import LibraryView from "$lib/LibraryView.svelte";
+  import GridLibraryView from "$lib/GridLibraryView.svelte";
+  import BinView from "$lib/BinView.svelte";
+  import Icon from "$lib/Icon.svelte";
 
   onMount(loadSession);
+
+  type View = "library" | "bin";
+  let view = $state<View>("library");
+
+  const tabs: ReadonlyArray<readonly [View, string, "layers" | "trash"]> = [
+    ["library", "文件库", "layers"],
+    ["bin", "回收站", "trash"],
+  ];
+
+  const initial = $derived(($me?.displayName ?? $me?.userId ?? "U").slice(0, 1).toUpperCase());
 </script>
 
-<svelte:head><title>文件库</title></svelte:head>
+<svelte:head><title>教研数据库</title></svelte:head>
 
 {#if !$authChecked}
   <div class="flex h-full items-center justify-center text-ink-3">加载中…</div>
 {:else if $me}
-  <div class="flex h-full flex-col">
-    <LibraryView showUserFooter />
+  <div class="flex h-full">
+    <!-- 左栏导航(ADR-0031) -->
+    <nav class="flex w-[240px] shrink-0 flex-col border-r border-line-soft bg-sidebar px-3 py-4">
+      <!-- 标题 -->
+      <div class="mb-3 px-1 text-[15px] font-bold text-ink">教研数据库</div>
+      <div class="mb-2 border-t border-line-soft"></div>
+
+      <!-- 导航项 -->
+      <div class="flex flex-1 flex-col gap-0.5">
+        {#each tabs as [id, label, icon] (id)}
+          <button
+            class="flex items-center gap-2.5 rounded-lg px-3 py-2 text-left text-[13px] transition {view === id
+              ? 'bg-selected font-semibold text-ink'
+              : 'text-ink-2 hover:bg-hover'}"
+            onclick={() => (view = id)}
+          >
+            <span class="text-ink-3"><Icon name={icon} size={15} /></span>
+            {label}
+          </button>
+        {/each}
+      </div>
+
+      <!-- 底部:用户身份 + 退出 -->
+      <div class="mt-auto flex items-center gap-2 border-t border-line-soft pt-3">
+        <span class="flex h-6 w-6 shrink-0 items-center justify-center rounded-full bg-accent text-[11px] font-semibold text-white">{initial}</span>
+        <span class="min-w-0 flex-1 truncate text-[12.5px] text-ink">{$me?.displayName ?? $me?.userId ?? ""}</span>
+        <button
+          class="rounded-lg border border-line-soft px-2 py-1 text-[11.5px] text-ink-3 transition hover:bg-hover hover:text-ink"
+          onclick={logout}
+          title="退出登录"
+        >退出</button>
+      </div>
+    </nav>
+
+    {#if view === "library"}
+      <GridLibraryView />
+    {:else}
+      <BinView />
+    {/if}
   </div>
 {:else}
   <LoginView />

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

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

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

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

hub/src/database/filelib/audit.ts

@@ -19,6 +19,10 @@ export const FILE_LIB_AUDIT_ACTIONS = {
   projectRename: "project.rename",
   projectMove: "project.move",
   projectDelete: "project.delete",
+  // ADR-0031:回收站。restore 与 delete 对称(都只动本节点);purge 是整支硬删。
+  folderRestore: "folder.restore",
+  projectRestore: "project.restore",
+  nodePurge: "node.purge",
   permissionGrant: "permission.grant",
   permissionUpdate: "permission.update",
   permissionRevoke: "permission.revoke",

hub/src/database/filelib/binService.ts

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

hub/src/database/filelib/grantService.ts

@@ -274,45 +274,6 @@ export async function forceAdjustGrants(
   });
 }
 
-/** 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>();

hub/src/database/filelib/permission.ts

@@ -1,5 +1,5 @@
 /**
- * 纯权限 reducer(契约 P6 / D11 / D8)。
+ * 纯权限 reducer(契约 P6 / D8)。
  *
  * 设计约束(Metis 评审):本文件是纯函数层 —— 输入是"已解析好的" grant、祖先链
  * 与用户组集合,不碰 DB / 网络。数据获取在 treeService。这样权限代数可以脱离
@@ -23,8 +23,6 @@ export interface EffectiveRoleInput {
   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[];
@@ -37,20 +35,16 @@ export interface EffectiveRoleInput {
  * 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。
+ * 项目级 grant 恒参与计算(ADR-0030):原 D11 独立权限开关已废除,
+ * FileLibProjectSettings 不再被读取。
  */
 export function effectiveRole(input: EffectiveRoleInput): FileLibRole | null {
   const onChain = new Set<string>([input.nodeId, ...input.ancestorIds]);
   const groups = new Set(input.groupIds);
-  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;

hub/src/database/filelib/treeService.ts

@@ -94,7 +94,7 @@ async function loadVisibleChain(
   return { node, ancestors: ordered };
 }
 
-/** 数据获取层:把 chain、grants、groups、toggle 装配成纯 reducer 的输入。 */
+/** 数据获取层:把 chain、grants、groups 装配成纯 reducer 的输入。 */
 async function resolveRole(
   tx: Tx,
   deps: AccessDeps,
@@ -106,20 +106,11 @@ async function resolveRole(
     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,
@@ -278,11 +269,6 @@ export async function createNode(
         },
       });
     }
-    if (input.kind === "PROJECT") {
-      await tx.fileLibProjectSettings.create({
-        data: { nodeId: id, independentPermissionsEnabled: false },
-      });
-    }
 
     await writeFileLibAudit(tx, {
       action: nodeAction(input.kind, "Create"),
@@ -457,10 +443,12 @@ export async function getEffectiveRole(
 
 export interface BreadcrumbEntry {
   readonly depth: number;
-  /** D17:无 View 的祖先 id/name 都为 null(不泄露)。 */
+  /** D17:无 View 的祖先 id/name 置为 null(不泄露)。 */
   readonly id: string | null;
   readonly name: string | null;
   readonly kind: "FOLDER" | "PROJECT";
+  /** 该节点对调用者的 effective role;无 View 为 null。 */
+  readonly role: FileLibRole | null;
 }
 
 /** D17 面包屑:需 self VIEW;链上每个节点单独算权限,无 View 只留占位。 */
@@ -482,20 +470,12 @@ export async function breadcrumb(
       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,
@@ -506,6 +486,7 @@ export async function breadcrumb(
         id: visible ? current.id : null,
         name: visible ? current.name : null,
         kind: current.kind,
+        role,
       };
     });
   });
@@ -545,14 +526,6 @@ export async function listChildren(
       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[] = [];
@@ -561,7 +534,6 @@ export async function listChildren(
         nodeId: child.id,
         nodeKind: child.kind,
         ancestorIds: parentAncestorIds,
-        independentPermissionsEnabled: toggleByNode.get(child.id) ?? false,
         userId: actor.userId,
         groupIds,
         grants: allGrants,

hub/src/database/routes/binRoutes.ts

@@ -0,0 +1,44 @@
+/**
+ * /database/api/bin/* 回收站端点(ADR-0031)。
+ * 约定:绝对路径;actorOrNull 前置;业务全走 binService;错误统一 sendRouteError。
+ */
+
+import type { FastifyInstance } from "fastify";
+import { listBin, purgeBinEntry, restoreBinEntry } from "../filelib/binService.js";
+import { actorOrNull, sendRouteError, type FileLibRouteDeps } from "../filelib/routeShared.js";
+
+export async function registerBinRoutes(app: FastifyInstance, deps: FileLibRouteDeps): Promise<void> {
+  const svc = { prisma: deps.prisma, organizationId: deps.organizationId, groupResolver: deps.groupResolver };
+
+  app.get("/database/api/bin", async (request, reply) => {
+    const actor = await actorOrNull(request, reply, deps);
+    if (actor === null) return reply;
+    try {
+      return { entries: await listBin(svc, actor) };
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.post("/database/api/bin/:id/restore", 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 restoreBinEntry(svc, actor, id);
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+
+  app.delete("/database/api/bin/:id", 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 purgeBinEntry(svc, actor, id);
+    } catch (error) {
+      return sendRouteError(reply, error);
+    }
+  });
+}

hub/src/database/routes/databaseRoutes.ts

@@ -28,6 +28,7 @@ import { SESSION_COOKIE_NAME, signSession } from "../../admin/auth/session.js";
 import { registerFileLibRoutes } from "./filelibRoutes.js";
 import { registerFileRoutes } from "./fileRoutes.js";
 import { registerMemberGroupRoutes } from "./memberGroupRoutes.js";
+import { registerBinRoutes } from "./binRoutes.js";
 import { registerTeacherApp } from "./teacherApp.js";
 import { createInMemoryVersionStore } from "../filelib/versionStore.js";
 import { createMemberGroupResolver } from "../filelib/memberGroupResolver.js";
@@ -161,6 +162,7 @@ export async function registerDatabaseRoutes(
   await registerFileLibRoutes(app, filelibDeps);
   await registerFileRoutes(app, filelibDeps);
   await registerMemberGroupRoutes(app, filelibDeps);
+  await registerBinRoutes(app, filelibDeps);
   await registerTeacherApp(app, {
     prisma: config.prisma,
     sessionSecret: config.sessionSecret,

hub/src/database/routes/filelibRoutes.ts

@@ -21,7 +21,6 @@ import {
   listGrants,
   putGrants,
   revokeGrant,
-  setIndependentPermission,
 } from "../filelib/grantService.js";
 import { FileLibError } from "../filelib/model.js";
 import {
@@ -114,9 +113,6 @@ export async function registerFileLibRoutes(
         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,
@@ -126,7 +122,6 @@ export async function registerFileLibRoutes(
           description: node.description,
           role,
           provisionStatus: node.provisionStatus,
-          independentPermission: settings?.independentPermissionsEnabled ?? false,
           createdAt: node.createdAt,
           updatedAt: node.updatedAt,
         },
@@ -258,21 +253,6 @@ export async function registerFileLibRoutes(
     }
   });
 
-  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(C2 /groups/search)已迁至 memberGroupRoutes.ts,读 in-hub
   // MemberGroup 闭包(ADR-0028)。此处不再注册,避免重复。
 }

hub/test/integration/filelib-nav.test.ts

@@ -0,0 +1,151 @@
+/**
+ * 回收站集成测试(真实 Postgres,ADR-0031;最近打开已由 ADR-0032 移除)。
+ * 覆盖:bin 列出(祖先全活跃顶点/直连 MANAGE 可见性/管理员)、restore 对称语义
+ * 与审计、purge 仅管理员 + 整支硬删(RESTRICT 顺序)。
+ * 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,
+  softDeleteNode,
+  listChildren,
+  renameNode,
+  type FileLibActor,
+  type TreeServiceDeps,
+} from "../../src/database/filelib/treeService.js";
+import { listBin, purgeBinEntry, restoreBinEntry, type BinDeps } from "../../src/database/filelib/binService.js";
+import { createStaticGroupResolver } from "../../src/database/filelib/groupResolver.js";
+import { createInMemoryVersionStore } from "../../src/database/filelib/versionStore.js";
+import { FILE_LIB_AUDIT_ACTIONS } from "../../src/database/filelib/audit.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 treeDeps(): TreeServiceDeps {
+  return {
+    prisma,
+    groupResolver: createStaticGroupResolver({ u_bob: ["g_physics"] }),
+    versionStore: createInMemoryVersionStore(),
+    organizationId: DEFAULT_ORG_ID,
+    storageRoot: "/tmp/filelib-test",
+  };
+}
+
+function binDeps(): BinDeps {
+  return {
+    prisma,
+    organizationId: DEFAULT_ORG_ID,
+    groupResolver: createStaticGroupResolver({ u_bob: ["g_physics"] }),
+  };
+}
+
+beforeEach(async () => {
+  await resetDb();
+  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 } });
+  }
+});
+
+describe("binService · 列出与可见性", () => {
+  it("只露每支已删子树的顶;管理员全见,直连 MANAGE 可见,无关者不见", async () => {
+    const root = await createNode(treeDeps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    const child = await createNode(treeDeps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "必修一" });
+    await createNode(treeDeps(), ADMIN, { parentId: child.id, kind: "PROJECT", name: "TH-141" });
+    // alice 在 child 上直连 MANAGE。
+    const own = await createNode(treeDeps(), ADMIN, {
+      parentId: null, kind: "PROJECT", name: "alice 项目",
+      grants: [{ principalType: "USER", principalId: "u_alice", role: "MANAGE" }],
+    });
+
+    await softDeleteNode(treeDeps(), ADMIN, child.id); // 删中间层:child 是顶,孙项目不单列
+    await softDeleteNode(treeDeps(), ADMIN, own.id);
+
+    const adminBin = await listBin(binDeps(), ADMIN);
+    expect(adminBin.map((e) => e.name).sort()).toEqual(["alice 项目", "必修一"]);
+
+    const aliceBin = await listBin(binDeps(), ALICE);
+    expect(aliceBin.map((e) => e.name)).toEqual(["alice 项目"]); // 只见自己 MANAGE 的
+
+    const bobBin = await listBin(binDeps(), BOB);
+    expect(bobBin).toEqual([]);
+
+    void root;
+  });
+});
+
+describe("binService · 恢复", () => {
+  it("restore 只清本节点:整支立即可见,落 folder.restore 审计;无权者 404", async () => {
+    const root = await createNode(treeDeps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    const child = await createNode(treeDeps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "必修一" });
+    await softDeleteNode(treeDeps(), ADMIN, child.id);
+
+    await expect(restoreBinEntry(binDeps(), BOB, child.id)).rejects.toMatchObject({ statusCode: 404 });
+    await restoreBinEntry(binDeps(), ADMIN, child.id);
+
+    const visible = await listChildren(treeDeps(), ADMIN, root.id);
+    expect(visible.map((c) => c.name)).toContain("必修一");
+
+    const audits = await prisma.auditEntry.findMany({
+      where: { action: FILE_LIB_AUDIT_ACTIONS.folderRestore },
+    });
+    expect(audits).toHaveLength(1);
+  });
+
+  it("ADR-0035:撞名时恢复报 name_conflict_on_restore(不自动改名),清名后可恢复", async () => {
+    const root = await createNode(treeDeps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    const child = await createNode(treeDeps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "必修一" });
+    await softDeleteNode(treeDeps(), ADMIN, child.id);
+    // 删除后同名新建 -> 活跃兄弟占了名字
+    await createNode(treeDeps(), ADMIN, { parentId: root.id, kind: "FOLDER", name: "必修一" });
+
+    await expect(restoreBinEntry(binDeps(), ADMIN, child.id)).rejects.toMatchObject({
+      statusCode: 409,
+      code: "name_conflict_on_restore",
+    });
+
+    // 改名现有节点后恢复 -> 成功,保留原名
+    const active = (await listChildren(treeDeps(), ADMIN, root.id)).find((c) => c.name === "必修一")!;
+    await renameNode(treeDeps(), ADMIN, active.id, "必修一(新)");
+    const result = await restoreBinEntry(binDeps(), ADMIN, child.id);
+    expect(result.name).toBe("必修一");
+    expect(result.renamedFrom).toBeUndefined();
+
+    const visible = await listChildren(treeDeps(), ADMIN, root.id);
+    expect(visible.map((c) => c.name).sort()).toEqual(["必修一", "必修一(新)"]);
+  });
+});
+
+describe("binService · 彻底删除", () => {
+  it("ADR-0034:与条目可见性同权 —— 直连 MANAGE 可清空,无关者 404;整支硬删 + node.purge 审计", async () => {
+    const root = await createNode(treeDeps(), ADMIN, { parentId: null, kind: "FOLDER", name: "物理" });
+    const child = await createNode(treeDeps(), ADMIN, {
+      parentId: root.id, kind: "PROJECT", name: "TH-141",
+      grants: [{ principalType: "USER", principalId: "u_alice", role: "MANAGE" }],
+    });
+    await softDeleteNode(treeDeps(), ADMIN, root.id); // 连根删:root 是顶;alice 在 root 上无直连 MANAGE
+
+    await expect(purgeBinEntry(binDeps(), BOB, root.id)).rejects.toMatchObject({ statusCode: 404 });
+    const { removed } = await purgeBinEntry(binDeps(), ADMIN, root.id);
+    expect(removed).toBe(2);
+
+    expect(await prisma.fileLibNode.count({ where: { id: { in: [root.id, child.id] } } })).toBe(0);
+    expect(await prisma.fileLibGrant.count({ where: { nodeId: child.id } })).toBe(0);
+
+    const audits = await prisma.auditEntry.findMany({ where: { action: FILE_LIB_AUDIT_ACTIONS.nodePurge } });
+    expect(audits).toHaveLength(1);
+  });
+
+  it("ADR-0034:非管理员的直连 MANAGE 持有者也能彻底删除", async () => {
+    const own = await createNode(treeDeps(), ADMIN, {
+      parentId: null, kind: "PROJECT", name: "alice 项目",
+      grants: [{ principalType: "USER", principalId: "u_alice", role: "MANAGE" }],
+    });
+    await softDeleteNode(treeDeps(), ADMIN, own.id);
+
+    const { removed } = await purgeBinEntry(binDeps(), ALICE, own.id);
+    expect(removed).toBe(1);
+    expect(await prisma.fileLibNode.count({ where: { id: own.id } })).toBe(0);
+  });
+});

hub/test/integration/filelib-tree.test.ts

@@ -80,20 +80,15 @@ describe("treeService · 创建规则", () => {
   });
 });
 
-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 () => {
+describe("treeService · 项目级 grant 恒生效(ADR-0030)", () => {
+  it("项目级非创建者 grant 创建即生效,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
+    // 无开关、无冻结:alice 的项目级 EDIT 立即可见。
+    expect(await getEffectiveRole(deps(), ALICE, project.id)).toBe("EDIT");
     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
   });
 });
 

hub/test/unit/filelib-permission.test.ts

@@ -1,6 +1,6 @@
 /**
- * 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;
+ * 纯权限 reducer 单测(契约 P6 / 2.3)。
+ * 矩阵覆盖:个人/Group/祖先继承/max 取最高/不降权/空权限;
  * 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";
@@ -10,7 +10,6 @@ const base: EffectiveRoleInput = {
   nodeId: "N",
   nodeKind: "FOLDER",
   ancestorIds: ["A", "R"], // N ⊂ A ⊂ R
-  independentPermissionsEnabled: false,
   userId: "u1",
   groupIds: ["g1"],
   grants: [],
@@ -75,33 +74,28 @@ describe("effectiveRole · 契约 P6 矩阵", () => {
   });
 });
 
-describe("effectiveRole · D11 独立权限开关", () => {
+describe("effectiveRole · 项目级 grant 恒生效(ADR-0030)", () => {
   const project: EffectiveRoleInput = { ...base, nodeKind: "PROJECT", nodeId: "P" };
 
-  it("开关关闭:项目级非创建者 grant 冻结", () => {
+  it("项目级非创建者 grant 直接参与(无开关、无冻结)", () => {
     const grants = [grant({ nodeId: "P", role: "EDIT" })];
-    expect(effectiveRole({ ...project, grants })).toBeNull();
+    expect(effectiveRole({ ...project, grants })).toBe("EDIT");
   });
 
-  it("开关关闭:创建者 grant 仍生效", () => {
+  it("创建者 grant 照常生效", () => {
     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", () => {
+  it("项目级与祖先链 grant 同取 max", () => {
     const grants = [
-      grant({ nodeId: "P", role: "MANAGE" }), // 冻结
-      grant({ nodeId: "A", role: "VIEW" }),   // 生效
+      grant({ nodeId: "P", role: "VIEW" }),
+      grant({ nodeId: "A", role: "EDIT" }),
     ];
-    expect(effectiveRole({ ...project, grants })).toBe("VIEW");
+    expect(effectiveRole({ ...project, grants })).toBe("EDIT");
   });
 
-  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)", () => {
+  it("文件夹与项目语义一致(self grant 照常参与)", () => {
     const grants = [grant({ nodeId: "N", role: "EDIT" })];
     expect(effectiveRole({ ...base, grants })).toBe("EDIT");
   });