test(companion): cover platform connected lifecycle integration

docs/plans/state.json

@@ -749,6 +749,17 @@
       ],
       "test_status": "pnpm test:run src/companion/platformClients.test.ts src/companion/runtimeClient.test.ts src/companion/heartbeatLoop.test.ts src/companion/platformClients.integration.test.ts + pnpm typecheck passing"
     },
+    "companion-platform-connected-integration-coverage": {
+      "status": "completed",
+      "date": "2026-02-17",
+      "updated": "2026-02-17",
+      "summary": "Added live gateway integration coverage to verify platform `connected` passthrough tracks runtime WebSocket connect/disconnect lifecycle.",
+      "files_modified": [
+        "src/companion/platformClients.integration.test.ts",
+        "docs/plans/state.json"
+      ],
+      "test_status": "pnpm test:run src/companion/platformClients.integration.test.ts src/companion/platformClients.test.ts src/companion/runtimeClient.test.ts src/companion/heartbeatLoop.test.ts + pnpm typecheck passing"
+    },
     "browser-tools-activation-clarity": {
       "status": "completed",
       "date": "2026-02-17",

src/companion/platformClients.integration.test.ts

@@ -108,6 +108,21 @@ function createRuntime(): CompanionRuntimeClient {
 }
 
 describe('platform clients integration', () => {
+  it('platform connected reflects runtime connection lifecycle', async () => {
+    if (!LISTEN_ALLOWED) {
+      return;
+    }
+
+    const runtime = createRuntime();
+    const client = new IOSCompanionClient({ runtime, nodeId: 'ios-connected-e2e' });
+
+    expect(client.connected).toBe(false);
+    await client.connect();
+    expect(client.connected).toBe(true);
+    client.disconnect();
+    expect(client.connected).toBe(false);
+  });
+
   it('macOS companion wrapper registers and writes status with platform pinning', async () => {
     if (!LISTEN_ALLOWED) {
       return;