优化: AI Chat全栈多批审查修复与架构清理(risk_level清理/路由解耦/工具渲染/测试补测/死代码)

src/i18n/en/aiChat.ts

@@ -20,6 +20,7 @@ export default {
     today: 'Today',
     yesterday: 'Yesterday',
     earlier: 'Earlier',
+    groupEmpty: 'None',
 
     // ── Header buttons ──
     conversationList: 'Chat list',
@@ -155,7 +156,10 @@ export default {
     clearContext: 'Clear context',
     compressContext: 'Compress context',
     // Confirm dialog (clear is semantically irreversible; history archived, not deleted)
-    clearContextConfirm: 'Clear the current chat context? History is archived and preserved; new chats are not affected.',
+    // Title "Clear context" folded into the lead sentence; stress irreversible + archived segment + AI no longer sees history
+    clearContextConfirm: 'Clear context? This action is irreversible. The current chat context will be archived as a segment (the AI will no longer see these history messages). New chats are not affected.',
+    // Danger button label for the confirm dialog (ConfirmDialog dangerLabel); falls back to common.confirm if omitted
+    clearContextDangerLabel: 'Clear',
     // Collapsed separator (consecutive same-status merged into one bar; {n}=merged message count)
     contextArchived: 'Archived {n} messages',
     compressed: 'Context compressed',