fix(web): sidebar collapsed by default on all devices

.claude/settings.local.json

@@ -16,7 +16,9 @@
       "Bash(ping:*)",
       "Bash(curl:*)",
       "Bash(echo \"No health endpoint\" curl -s https://iconsulting.szaiai.com/api/v1/users/profile -H \"x-user-id: test\")",
-      "Bash(scp:*)"
+      "Bash(scp:*)",
+      "Bash(timeout 20 cat:*)",
+      "Bash(npm run build:*)"
     ]
   }
 }

packages/web-client/src/features/chat/presentation/stores/chatStore.ts

@@ -58,8 +58,8 @@ export const useChatStore = create<ChatState>((set, get) => ({
   userId: null,
   setUserId: (id) => set({ userId: id }),
 
-  // Sidebar - default open on desktop
-  sidebarOpen: window.innerWidth >= 768,
+  // Sidebar - always collapsed by default
+  sidebarOpen: false,
   setSidebarOpen: (open) => set({ sidebarOpen: open }),
   toggleSidebar: () => set((state) => ({ sidebarOpen: !state.sidebarOpen })),