feat(filelib): 老师端左栏导航:回收站 + 最近打开(ADR-0031)

- 回收站:listBin(祖先全活跃的已删顶点;管理员/直连 MANAGE 可见)、
  restore(与 D15 对称只清本节点,落审计)、purge(仅管理员,pathIds 枚举
  子树按深度降序分批硬删,绕过 self-FK RESTRICT)
- 最近打开:FileLibRecentVisit 表(filePath='' 兜底 PG 唯一索引),客户端
  成功打开后上报(VIEW 门禁,upsert 刷新),列表 20 条,D8/D15 可见性过滤
- 前端:/app 左栏(文件库/最近打开/回收站);RecentView/BinView;
  GridLibraryView 埋点 + navTarget 跳转(breadcrumb 建栈,role 已捎带)
- 测试:filelib-nav 集成 4 例;全套 79 例绿

hub/src/database/routes/databaseRoutes.ts

@@ -28,6 +28,8 @@ 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 { registerRecentRoutes } from "./recentRoutes.js";
 import { registerTeacherApp } from "./teacherApp.js";
 import { createInMemoryVersionStore } from "../filelib/versionStore.js";
 import { createMemberGroupResolver } from "../filelib/memberGroupResolver.js";
@@ -161,6 +163,8 @@ export async function registerDatabaseRoutes(
   await registerFileLibRoutes(app, filelibDeps);
   await registerFileRoutes(app, filelibDeps);
   await registerMemberGroupRoutes(app, filelibDeps);
+  await registerBinRoutes(app, filelibDeps);
+  await registerRecentRoutes(app, filelibDeps);
   await registerTeacherApp(app, {
     prisma: config.prisma,
     sessionSecret: config.sessionSecret,