修复: 前端 TS 阻断 + G1/G2 单测 + 归档已完成项

- 修复 vue-tsc 3 阻断: i18n 重复 err key 删除 + store 补 relateIdeas
- G1: extract_pinned_goal 单测 10 条(mention剥离/截断/空输入/全角冒号)
- G2: is_empty_tool_result 单测 11 条(JSON标记/中文/英文/非空判定)
- 归档: todo.md/docs/todo.md/待决策.md/待审查.md 已完成项迁入归档

src/i18n/en/ideas.ts

@@ -139,11 +139,5 @@ export default {
     confirmDelete: 'Delete idea "{title}"? This cannot be undone.',
     promoteFailed: 'Promotion failed',
     evalFailed: 'Evaluation failed',
-    // Error fallbacks (user-visible via state.error)
-    err: {
-      loadFailed: 'Failed to load ideas',
-      createFailed: 'Failed to create idea',
-      deleteFailed: 'Failed to delete idea',
-    },
   },
 }

src/i18n/zh-CN/ideas.ts

@@ -139,11 +139,5 @@ export default {
     confirmDelete: '确定删除灵感「{title}」?此操作不可撤销。',
     promoteFailed: '立项失败',
     evalFailed: '评估失败',
-    // 错误回退(state.error 用户可见)
-    err: {
-      loadFailed: '加载灵感失败',
-      createFailed: '创建灵感失败',
-      deleteFailed: '删除灵感失败',
-    },
   },
 }

src/stores/project.ts

@@ -131,6 +131,7 @@ function createStore() {
     deleteIdea: ideasStore.deleteIdea,
     evaluateIdea: ideasStore.evaluateIdea,
     promoteIdea: ideasStore.promoteIdea,
+    relateIdeas: ideasStore.relateIdeas,
     // workflow actions
     runWorkflow: workflowStore.runWorkflow,
     loadWorkflowExecutions: workflowStore.loadWorkflowExecutions,