新增: 无人值守P0任务边界全链

- 任务级授权边界判定与审批旁路单点插桩
- boundary_json 随会话落库(V45 可逆迁移)
- 六路非正常终局统一安全停靠与托盘通知
- 每五轮进度事件与会话头部进度条
- 前端边界配置卡侧栏徽标及 UX 校验补齐

src/i18n/en/aiChat.ts

@@ -110,6 +110,7 @@ export default {
 
     // ── Skill ──
     clearSkill: 'Clear skill',
+    skillBadgeTip: 'Injected full skill playbook: {name}',
     placeholderWithSkill: 'Skill selected. Type arguments and press Enter',
     placeholderDefault: "Type a message... (/ for skills, {'@'} to mention)",
     skillNoMatch: 'No matching skill',
@@ -141,6 +142,8 @@ export default {
     imageTooLarge: 'Image too large (max 10MB), skipped',
     imageLimit: 'Up to {n} images, extras ignored',
     imageReadFailed: 'Failed to read image',
+    imageIgnoredWarn: 'Current model does not support images; they will be ignored on send',
+    imageOnlyBlocked: 'Current model does not support images; switch to a vision model or add some text',
 
     // ── Confirm dialog ──
     confirmDeleteConversation: 'Delete chat "{title}"? This cannot be undone.',