feat(analysis): 添加分析查看器页面 (#122)

- 新增 AnalysisPage 页面查看 /workflow:analyze-with-file 分析结果
- 支持 Tab 分组展示：讨论记录、结论、代码探索、视角分析
- Markdown 内容富文本渲染，JSON 数据结构化卡片展示
- 添加后端 API 路由 /api/analysis
- 添加侧边栏导航入口和中英文翻译

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

ccw/frontend/src/locales/en/navigation.json

@@ -37,7 +37,8 @@
     "graph": "Graph Explorer",
     "teams": "Team Execution",
     "terminalDashboard": "Terminal Dashboard",
-    "skillHub": "Skill Hub"
+    "skillHub": "Skill Hub",
+    "analysis": "Analysis Viewer"
   },
   "sidebar": {
     "collapse": "Collapse",