Add player control-plane and dashboard updates

test/dashboard-state.test.js

@@ -71,4 +71,56 @@ test('dashboard state counts active players from the registry heartbeat', async
     player_identifier: 'player-alpha',
     player_url: 'http://player.local'
   });
+});
+
+test('dashboard state keeps other screens when one subscription fails', async () => {
+  const service = createDashboardStateService({
+    pool: {
+      async query(sql) {
+        if (String(sql || '').includes('COUNT(*) AS connected_count')) {
+          return [[{ connected_count: 0 }]];
+        }
+        if (String(sql || '').includes('SELECT s.slug, pod.device_id, pod.client_name')) {
+          return [[]];
+        }
+        return [[]];
+      }
+    },
+    common: {
+      async fetchAdminData() {
+        return {
+          screens: [
+            { slug: 'alpha', name: 'Alpha' },
+            { slug: 'beta', name: 'Beta' }
+          ],
+          playlists: [],
+          slides: []
+        };
+      },
+      async fetchScreenPlayerUrls() {
+        return {};
+      },
+      async fetchPlayerRegistrations() {
+        return [];
+      }
+    },
+    playerSnapshotCache: new Map([
+      ['beta', { count: 1, connections: [{ id: 'beta-conn', clientId: 'beta-conn' }] }]
+    ]),
+    playerSnapshotSockets: new Map(),
+    ensurePlayerSnapshotSubscription(slug) {
+      if (slug === 'alpha') {
+        throw new Error('subscription failed');
+      }
+    },
+    formatDashboardDate(value) {
+      return String(value || '');
+    }
+  });
+
+  const state = await service.buildDashboardState();
+
+  assert.equal(state.screens.length, 2);
+  assert.equal(state.clients.length, 1);
+  assert.equal(state.clients[0].screen_slug, 'beta');
 });