chore: 锁屏与通知组件删除（enabled:false的最终清理）

Phase 3 终审 M-1/M-2 摘入口后组件保留待决，本提交最终删除：
- art-screen-lock/ 与 art-notification/ 组件目录
- component.ts screen-lock 全局组件项、headerBar.ts notification 项
- types/config HeaderBarFeatureConfig.notification 字段、
  useHeaderBar shouldShowNotification
- art-header-bar 通知按钮/挂载/showNotice/visibleNotice/
  bodyCloseNotice 与 document 点击监听、.notice-button 样式
- components.d.ts 两条目；crypto-js 依赖全套（env.d.ts 声明/
  package.json/lockfile/optimizeDeps）——唯一消费方是锁屏
- en/zh 孤儿语言键（notice.* / lockScreen.* / topBar.user.lockScreen）
  与 mittBus openLockScreen 事件类型（无发射/订阅方）

grep 零残留；vitest 164 passed；build 通过（主 chunk 358.45→355.84 kB，
crypto-js 出预构建）；auto-imports.d.ts 行尾漂移已还原。
CLAUDE.md Phase 4 清理单 6/7 结项（并补记 8/9 随 Task 5E/5D 结项）。

Co-Authored-By: Claude Code <noreply@anthropic.com>

admin/pnpm-lock.yaml

@@ -26,9 +26,6 @@ importers:
       axios:
         specifier: ^1.12.2
         version: 1.12.2
-      crypto-js:
-        specifier: ^4.2.0
-        version: 4.2.0
       echarts:
         specifier: ^6.0.0
         version: 6.0.0
@@ -1375,9 +1372,6 @@ packages:
     resolution: {integrity: sha512-uV2QOWP2nWzsy2aMp8aRibhi9dlzF5Hgh5SHaB9OiTGEyDTiJJyx0uy51QXdyWbtAHNua4XJzUKca3OzKUd3vA==}
     engines: {node: '>= 8'}
 
-  crypto-js@4.2.0:
-    resolution: {integrity: sha512-KALDyEYgpY+Rlob/iriUtjV6d5Eq+Y191A5g4UqLAi8CyGP9N1+FdVbkc1SxKc2r4YAYqG8JzO2KGL+AizD70Q==}
-
   css-functions-list@3.2.3:
     resolution: {integrity: sha512-IQOkD3hbR5KrN93MtcYuad6YPuTSUhntLHDuLEbFWE+ff2/XSZNdZG+LcbbIW5AXKg/WFIfYItIzVoHngHXZzA==}
     engines: {node: '>=12 || >=16'}
@@ -4224,8 +4218,6 @@ snapshots:
       shebang-command: 2.0.0
       which: 2.0.2
 
-  crypto-js@4.2.0: {}
-
   css-functions-list@3.2.3: {}
 
   css-tree@3.1.0: