feat: Add specialized context rendering for multi-cli-plan sessions

- Add MultiCliContextPackage type for multi-cli-plan context-package.json
- Create MultiCliContextContent component with sections for:
  - Selected solution (feasibility, effort, risk, CLI sources)
  - Implementation plan (approach, tasks with files, execution flow, milestones)
  - Dependencies (internal and external)
  - CLI consensus (agreements, resolved conflicts)
  - Technical concerns and constraints
- Update ExpandedMultiCliPanel to detect and use appropriate context renderer
- Add i18n translations for new context labels

ccw/frontend/src/locales/en/lite-tasks.json

@@ -36,7 +36,22 @@
     "agreements": "Agreements",
     "disagreements": "Disagreements",
     "resolution": "Resolution",
-    "clarificationQuestions": "Clarification Questions"
+    "clarificationQuestions": "Clarification Questions",
+    "context": {
+      "solution": "Selected Solution",
+      "implementationPlan": "Implementation Plan",
+      "approach": "Approach",
+      "tasks": "Tasks",
+      "milestones": "Milestones",
+      "dependencies": "Dependencies",
+      "internal": "Internal",
+      "external": "External",
+      "consensus": "CLI Consensus",
+      "resolvedConflicts": "Resolved Conflicts",
+      "technicalConcerns": "Technical Concerns",
+      "constraints": "Constraints",
+      "sessionInfo": "Session Info"
+    }
   },
   "createdAt": "Created",
   "rounds": "rounds",

ccw/frontend/src/locales/zh/lite-tasks.json

@@ -36,7 +36,22 @@
     "agreements": "共识",
     "disagreements": "分歧",
     "resolution": "解决方式",
-    "clarificationQuestions": "澄清问题"
+    "clarificationQuestions": "澄清问题",
+    "context": {
+      "solution": "选定方案",
+      "implementationPlan": "实现计划",
+      "approach": "实现路径",
+      "tasks": "任务列表",
+      "milestones": "里程碑",
+      "dependencies": "依赖项",
+      "internal": "内部依赖",
+      "external": "外部依赖",
+      "consensus": "CLI 共识",
+      "resolvedConflicts": "已解决分歧",
+      "technicalConcerns": "技术关注点",
+      "constraints": "约束条件",
+      "sessionInfo": "会话信息"
+    }
   },
   "createdAt": "创建时间",
   "rounds": "轮",