优化: UI/UX遗留批(审计/AI命令层/前端组件,会话前基线收尾)

- AuditLog +298(筛选/详情/i18n)+ audit 后端 record/mod

- AI 命令层:generate_image +81 / fetch_url / fetch_search / skills / tool_registry / tools/file / provider / conversation

- 前端组件:AiChat/TopBar/ConversationSidebar/GitChanges/ApprovalPopup/Dashboard/ProjectDetail 等 30+ + composables + i18n

- 诊断文档: aichat历史会话实证诊断-2026-08-04 + project_soft_delete 测试

src/i18n/en/auditLog.ts

@@ -50,5 +50,14 @@ export default {
       human: 'Human',
       auto: 'Auto',
     },
+    // Tab navigation
+    tabAudit: 'Approval History',
+    tabConversations: 'Conversations',
+    // Conversation history
+    convEmpty: 'No conversations yet',
+    convLoading: 'Loading conversations…',
+    convTruncated: 'Content truncated (expand to view full conversation)',
+    convSelectHint: '← Select a conversation to view full interaction log',
+    convReasoning: 'Reasoning (thinking)',
   },
 }

src/i18n/en/ideas.ts

@@ -89,6 +89,7 @@ export default {
     relatedManage: 'Manage relations',
     relatedConfirm: 'Confirm',
     relatedCancel: 'Cancel',
+    relatedSearchPlaceholder: 'Search idea title or description...',
 
     // Idea stats panel (used by IdeasPanel)
     statsPending: 'Pending',
@@ -97,7 +98,8 @@ export default {
 
     // Tags
     tagsTitle: '🏷️ Tags',
-    noTags: 'No tags yet',
+    noTags: 'No tags',
+    editTags: 'Edit tags',
 
     // Status management
     statusTitle: '📋 Status',
@@ -139,5 +141,10 @@ export default {
     confirmStatus: 'Change idea "{title}" status from {from} to {to}?',
     promoteFailed: 'Promotion failed',
     evalFailed: 'Evaluation failed',
+    // Batch operations
+    batchDelete: 'Batch delete',
+    confirmBatchDelete: 'Delete {n} selected ideas? This cannot be undone.',
+    batchDeleteSuccess: 'Deleted {n} idea(s)',
+    selectedCount: '{n} selected',
   },
 }

src/i18n/en/nav.ts

@@ -5,7 +5,7 @@ export default {
     projects: 'Projects',
     tasks: 'Tasks',
     knowledge: 'Knowledge',
-    audit: 'Audit Log',
+    audit: 'History',
     settings: 'Settings',
     workspace: 'Workspace',
     traceability: 'Traceability',