fix(gateway-client): increase chat completion timeout from 30s to 120s, add retry on timeout

- Add configurable chatRunTimeoutMs option (default 120s) to GatewayClientOptions
- Bump RPC request timeout from 15s to 30s
- Mark 'Timed out waiting for chat completion' as recoverable for auto-retry
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

apps/desktop/src/main/chat-gateway-recovery.ts

@@ -47,6 +47,7 @@ export function isRecoverableGatewayChatError(message?: string): boolean {
 
   const normalized = message.toLowerCase();
   return normalized.includes("gateway websocket is not open")
+    || normalized.includes("timed out waiting for chat completion")
     || isTransientLocalGatewayError(message);
 }
 

packages/gateway-client/src/index.ts

@@ -60,6 +60,8 @@ interface GatewayClientOptions {
   deviceToken?: string;
   deviceIdentity?: GatewayDeviceIdentityProvider;
   onDeviceToken?: (deviceToken: string) => Promise<void> | void;
+  /** Maximum idle time (ms) between stream events before chat run times out. Default: 120_000 (2 min). */
+  chatRunTimeoutMs?: number;
 }
 
 interface GatewayErrorShape {
@@ -216,6 +218,7 @@ export class GatewayClient {
   private deviceToken?: string;
   private readonly deviceIdentity?: GatewayDeviceIdentityProvider;
   private readonly onDeviceToken?: (deviceToken: string) => Promise<void> | void;
+  private readonly chatRunTimeoutMs: number;
   private websocket?: WebSocket;
   private statusSnapshot: GatewayStatus;
   private readonly logs: LogEntry[] = [];
@@ -231,6 +234,7 @@ export class GatewayClient {
     this.deviceToken = options.deviceToken;
     this.deviceIdentity = options.deviceIdentity;
     this.onDeviceToken = options.onDeviceToken;
+    this.chatRunTimeoutMs = options.chatRunTimeoutMs ?? 120_000;
     this.statusSnapshot = this.createStatus("unknown", "Gateway client initialized.");
     this.appendLog("info", `Gateway client initialized for ${this.url}.`);
   }
@@ -717,7 +721,7 @@ export class GatewayClient {
       const timer = setTimeout(() => {
         this.pendingRequests.delete(id);
         reject(new Error(`Gateway request timed out: ${method}`));
-      }, 15000);
+      }, 30000);
 
       this.pendingRequests.set(id, {
         resolve,
@@ -770,7 +774,7 @@ export class GatewayClient {
       const error = new Error("Timed out waiting for chat completion.");
       pending.onError?.({ sessionId: sessionKey, runId, error });
       pending.reject(error);
-    }, 30000);
+    }, this.chatRunTimeoutMs);
   }
 
   private refreshChatRunTimer(runId: string): void {