refactor(composables): migrate stores →

composables, align with updated API

  - Replace deleted Pinia stores with
  module-level singleton composables
    (useAuth, useChat, useFeed, useUi) — all
  return reactive({...}) so
    Refs auto-unwrap in both templates and
  script code

  - Align entire codebase with new
  swagger-generated api.ts types:
    · TagDto.value  (was .name) — FeedCard,
  FeedFilters, ProfileEditor,
      ProfileSetupView, MyProfileView,
  ProfileDetailView, useUi
    · MediaItemDto[] / .path  (was mediaUrls[],
  avatarUrl) — FeedCard,
      FeedView, MyProfileView,
  ProfileDetailView
    · ChatDto.status 'active'|'closed'  (was
  isActive: boolean) —
      ChatRoomView, ChatsListView
    · MessageDto.profileId  (was senderId) —
  ChatRoomView, ChatBubble
    · MeResponseDto → fetchMe now calls /me +
  /profiles/my in parallel
    · Token refresh: res.data.data.accessToken
  (nested wrapper) —
      router/index.ts aligned with client.ts
  interceptor

  - Fix FeedCard, ChatBubble imports pointing
  to deleted store files
  - Fix ProfileSetupView form type to avoid
  string|undefined on v-model
  - Fix history.back() → window.history.back()
  via goBack() helper
  - Fix chat.unreadCount possibly-undefined
  guard in ChatsListView
  - Fix MapPicker Leaflet icon cast (as unknown
  as Record<string, unknown>)

src/components/layout/AppShell.vue

@@ -4,10 +4,10 @@ import { useRoute } from 'vue-router';
 import TauriTitlebar from './TauriTitlebar.vue';
 import SideNav from './SideNav.vue';
 import BottomNav from './BottomNav.vue';
-import { useAuthStore } from '@/stores/auth.store';
+import { useAuth } from '@/composables/useAuth';
 
 const route = useRoute();
-const authStore = useAuthStore();
+const authStore = useAuth();
 
 const isTauri = typeof window !== 'undefined' && !!window.__TAURI__;