fix(companion): clear disconnect metadata after reconnect

src/companion/runtimeClient.test.ts

@@ -886,6 +886,44 @@ describe('CompanionRuntimeClient', () => {
     });
   });
 
+  it('connect clears stale disconnect metadata from prior sessions', async () => {
+    class FakeWebSocket extends EventEmitter {
+      readyState: number = WebSocket.CONNECTING;
+
+      constructor() {
+        super();
+        queueMicrotask(() => {
+          this.readyState = WebSocket.OPEN;
+          this.emit('open');
+        });
+      }
+
+      send(_payload: string, callback?: (error?: Error) => void): void {
+        callback?.();
+      }
+
+      close(code?: number, reason?: string): void {
+        this.readyState = WebSocket.CLOSED;
+        this.emit('close', code ?? 1000, Buffer.from(reason ?? ''));
+      }
+    }
+
+    const client = new CompanionRuntimeClient({
+      url: 'ws://127.0.0.1:1',
+      websocketFactory: () => new FakeWebSocket() as unknown as WebSocket,
+    });
+    await client.connect();
+    client.disconnect(4100, 'manual stop');
+
+    expect(client.lastDisconnectCode).toBe(4100);
+    expect(client.lastDisconnectReason).toBe('manual stop');
+
+    await client.connect();
+
+    expect(client.lastDisconnectCode).toBeUndefined();
+    expect(client.lastDisconnectReason).toBeUndefined();
+  });
+
   it('waitForIdle resolves immediately when no work is pending', async () => {
     const client = new CompanionRuntimeClient({
       url: 'ws://127.0.0.1:1',

src/companion/runtimeClient.ts

@@ -418,6 +418,8 @@ export class CompanionRuntimeClient {
         cleanup();
         settled = true;
         this.ws = ws;
+        this._lastDisconnectCode = undefined;
+        this._lastDisconnectReason = undefined;
         this.ws.on('message', (raw) => this.handleMessage(raw.toString()));
         this.ws.on('close', (code, reason) => {
           if (this.ws === ws) {