Harden dashboard realtime state and controls

tests/dashboard/realtime-client.test.ts

@@ -57,6 +57,24 @@ describe('dashboard realtime client', () => {
     expect(client.getSnapshot()).toMatchObject({ status: 'closed', isStale: true });
   });
 
+  it('requests an authoritative repair on initial connection and every reconnect', () => {
+    const source = new FakeEventSource();
+    const connected = vi.fn();
+    const client = createDashboardRealtimeClient({
+      sourceFactory: () => source,
+      onEvent: vi.fn(),
+      onConnected: connected,
+    });
+
+    client.start();
+    source.emit('open');
+    source.emit('error');
+    source.emit('open');
+
+    expect(connected).toHaveBeenNthCalledWith(1, { isReconnect: false });
+    expect(connected).toHaveBeenNthCalledWith(2, { isReconnect: true });
+  });
+
   it('maps events to the queries whose authoritative snapshots need refresh', () => {
     expect(
       queryKeysForDashboardEvent({