feat(admin): redesign /ai, /analyze, /markdown with decomposed blocks

- AI tasks: split monolithic surfaces into TaskListPane, TaskTimeline, TaskLogsBlock, TaskFilterChips, CollapsibleSection
- Analyze: extract page into blocks/ (metrics, content, composition, trend, paths, rank, activity, records, actions); add recharts-backed chart primitives
- Markdown: split into export/ and import/ panels with new MarkdownViewTabs
- Drop legacy /extra-features placeholder views; redirect old paths to flat routes
- i18n: add zh/en strings for AI logs, timeline, metadata, analyze time range

Author: Innei

apps/admin/package.json

@@ -76,6 +76,7 @@
     "es-toolkit": "1.45.1",
     "event-source-polyfill": "1.0.31",
     "fuse.js": "7.1.0",
+    "jotai": "2.20.0",
     "js-cookie": "3.0.5",
     "js-yaml": "4.1.1",
     "json5": "2.2.3",
@@ -92,11 +93,11 @@
     "path-browserify": "1.0.1",
     "qier-progress": "1.0.4",
     "qs": "6.15.0",
-    "jotai": "2.20.0",
     "react": "19.2.4",
     "react-dom": "19.2.4",
     "react-resizable-panels": "4.11.1",
     "react-router": "7.15.1",
+    "recharts": "3.8.1",
     "shiki": "3.21.0",
     "socket.io-client": "4.8.3",
     "sonner": "2.0.7",