优化: i18n硬编码清扫(8文件20+处中文字符串替为i18n)

- ToolCard: 已等待 → aiTool.waitTime

- ErrorBoundary: 堆栈详情 → error.stackDetails

- TopBar: 10处硬编码(tooltip+section标签+单位) → aiChat.* keys

- FileExplorer: 4处工程操作title → fileExplorer.*

- Tasks: 快捷菜单4处 → tasks.*

- EnrichmentPanel: 取消关联 → aiChat.enrichmentDismiss

- PlanProgress: 复用已有 aiChat.conflictsPending

- WorkflowDagDisplay: 删除中文fallback(已有i18n key)

- vue-tsc + vite build 通过

src/i18n/en/fileExplorer.ts

@@ -20,6 +20,11 @@ export default {
     // Diff
     showDiff: 'Show Diff',
     showContent: 'Show Content',
+    // Toolbar (current module actions)
+    editCurrentModule: 'Edit current module',
+    deleteCurrentModule: 'Delete current module',
+    addModuleTitle: 'Add module',
+    detachToWindow: 'Detach to separate window',
     // Module management
     addModule: 'Add Module',
     adding: 'Adding…',