feat(chat): ChatTimeline 双栏化(左会话列表)+ 路由可选参 + badge 账号级入口

Co-Authored-By: Claude <noreply@anthropic.com>

yunkes/src/router/index.ts

@@ -2,8 +2,8 @@ import { createRouter, createWebHistory, type RouteRecordRaw } from 'vue-router'
 
 // `/` redirects to `/customers`. Chat timeline params are path segments so the
 // URL is shareable + survives refresh:
-//   /chat/:channel/:ownerId/:talkerId   (1:1 DM)
-//   /group/:channel/:ownerId/:roomId    (group chat — same component, room_id)
+//   /chat/:channel/:ownerId/:talkerId?   (1:1 DM; talkerId optional → account-level)
+//   /group/:channel/:ownerId/:roomId?    (group chat — same component, room_id)
 const routes: RouteRecordRaw[] = [
   {
     path: '/',
@@ -58,7 +58,7 @@ const routes: RouteRecordRaw[] = [
     meta: { title: '搜索' },
   },
   {
-    path: '/chat/:channel/:ownerId/:talkerId',
+    path: '/chat/:channel/:ownerId/:talkerId?',
     name: 'chat',
     component: () => import('@/views/ChatTimeline.vue'),
     props: true,
@@ -67,7 +67,7 @@ const routes: RouteRecordRaw[] = [
   {
     // Group chat timeline — same component, but with a `roomId` prop so it
     // issues a room_id query instead of a talker_id query.
-    path: '/group/:channel/:ownerId/:roomId',
+    path: '/group/:channel/:ownerId/:roomId?',
     name: 'group-chat',
     component: () => import('@/views/ChatTimeline.vue'),
     props: true,