fix: multiple bug fixes

isolated users, db backup, weird disconnect issues for long voice sessions,

server/src/websocket/handler-status.spec.ts

@@ -67,6 +67,14 @@ describe('server websocket handler - status_update', () => {
     connectedUsers.clear();
   });
 
+  it('treats signaling keepalive messages as connection liveness', async () => {
+    createConnectedUser('conn-1', 'user-1', { lastPong: 1 });
+
+    await handleWebSocketMessage('conn-1', { type: 'keepalive' });
+
+    expect(connectedUsers.get('conn-1')?.lastPong).toBeGreaterThan(1);
+  });
+
   it('updates user status on valid status_update message', async () => {
     const user = createConnectedUser('conn-1', 'user-1');
 

server/src/websocket/handler.ts

@@ -293,7 +293,13 @@ export async function handleWebSocketMessage(connectionId: string, message: WsMe
   if (!user)
     return;
 
+  user.lastPong = Date.now();
+  connectedUsers.set(connectionId, user);
+
   switch (message.type) {
+    case 'keepalive':
+      break;
+
     case 'identify':
       handleIdentify(user, message, connectionId);
       break;

server/src/websocket/types.ts

@@ -17,6 +17,6 @@ export interface ConnectedUser {
   connectionScope?: string;
   /** User availability status (online, away, busy, offline). */
   status?: 'online' | 'away' | 'busy' | 'offline';
-  /** Timestamp of the last pong received (used to detect dead connections). */
+  /** Timestamp of the last pong or client message received (used to detect dead connections). */
   lastPong: number;
 }