优化: 界面交互完善与设置体验

- 审批卡尊重滚动意图,等长切换回底,排队超时按钮修活
- 带图编辑提示不静默丢,删除目标回写,切换文案消歧
- 会话键盘可达+搜索态重命名,筛选计数口径对齐
- 子任务提示正名,看板加载态
- 主题跟随系统,表单脏态拦截,密钥显隐留空提示

src/i18n/en/aiChat.ts

@@ -16,6 +16,8 @@ export default {
     unarchive: 'Unarchive',
     pinConversation: 'Pin',
     unpinConversation: 'Unpin',
+    // UX走查 P3-1/P2-6: rename entry in the "..." menu (search-mode parity + keyboard reach)
+    renameConversation: 'Rename',
     moreActions: 'More actions',
     archived: 'Archived',
     archivedCount: 'Archived ({n})',
@@ -36,6 +38,8 @@ export default {
     maximize: 'Maximize',
     pendingApprovalCount: '{n} pending',
     pendingApprovalHint: 'Click to jump to the first pending approval',
+    // UX walkthrough B1: approval card arrived while user scrolled up; no forced scroll, hint only (5s dedup in ToolCardList)
+    newApprovalPending: 'New approval pending',
     restoreSidebar: 'Restore sidebar',
     sidebarResizeHint: 'Drag to resize sidebar',
     detachWindow: 'Detach window',
@@ -60,6 +64,8 @@ export default {
 
     // ── Provider status ──
     clickToSwitchProvider: 'Click to switch provider',
+    // UX walkthrough B5: topbar switching shares the same IPC as Settings "set as default" (ai_set_provider rewrites is_default), label it honestly
+    providerSwitchSetsDefault: 'Click to switch provider (also sets it as the global default)',
     providerNotConfigured: 'No AI provider configured. Please add one in settings.',
     notConfigured: 'Not configured',
 
@@ -164,6 +170,8 @@ export default {
     editMessage: 'Edit',
     editMessageFailed: 'Edit failed: {msg}',
     editNotLastUser: 'Only the last user message can be edited',
+    // UX walkthrough B3: editMessage IPC takes no parts; editing would silently drop images, block at entry
+    editImageBlocked: 'This message contains images and cannot be edited (regenerating would lose them)',
     placeholderEditing: 'Edit message then Enter to regenerate (Esc to cancel)',
 
     // ── Error bubble actions (UX-03 / ) ──