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/ai.ts

@@ -43,6 +43,8 @@ export default {
     queueTimedOut: 'Queue timed out',
     approvalNotDelivered: 'Approval operation failed to reach the backend: {error}',
     queuedSendFailed: 'Failed to send queued message: {error}',
+    // UX-P2-A2: toast when queued messages get dropped by error/regenerate/edit (was silent)
+    queueCleared: 'Cleared {n} queued message(s)',
     approvalTimeout: '⚰ Approval timed out, automatically rejected: {toolName}',
     // conversation load/switch failure feedback (network jitter/IPC down → empty list/blank, was silent)
     loadConvFail: 'Failed to load conversations. Please check your network or backend connection.',

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 / ) ──

src/i18n/en/settings.ts

@@ -54,6 +54,10 @@ export default {
     phProviderName: 'e.g. DeepSeek, GLM-4',
     phBaseUrl: 'https://api.deepseek.com',
     phApiKey: 'sk-...',
+    // UX-P2 walkthrough: API key show/hide toggle + "leave empty = keep" note
+    apiKeyShow: 'Show',
+    apiKeyHide: 'Hide',
+    apiKeyKeepHint: 'Leave empty while editing to keep the saved API key unchanged',
     phDefaultModel: 'deepseek-chat',
     // Direction A (lightweight): defaultModel is only a "suggested starting point";
     // guide users to hit "Test connection" to pull the vendor's real model list and overwrite,

src/i18n/en/taskDetail.ts

@@ -76,6 +76,8 @@ export default {
     addSubtask: '+ Add Subtask',
     progressTitle: 'Progress',
     addSubtaskFailed: 'Failed to create subtask: {msg}',
+    // Subtask created (UX review P2-3): previously reused the batch-advance wording "Advanced N tasks"
+    subtaskCreated: 'Subtask created',
     // P2-9 subtask hint
     subtaskHint: 'This is a subtask of: {title}',
     // P2-7 subtask creation validation

src/i18n/en/tasks.ts

@@ -85,6 +85,8 @@ export default {
       emptyColumn: 'No tasks',
       dragHandle: 'Drag to move',
       parentNoDrag: 'Parent status is aggregated from subtasks and cannot be dragged',
+      // Illegal transition rejected on drag (UX review P2-5): toast the reason when the card bounces back
+      illegalMove: 'Cannot move: transition from "{from}" to "{to}" is not allowed',
     },
 
     // New task modal