chore: stabilize Zhinian pilot delivery

electron/main/ipc-handlers.ts

@@ -1370,7 +1370,7 @@ function registerGatewayHandlers(
       logger.info(`[chat:sendWithMedia] Sending: message="${message.substring(0, 100)}", attachments=${imageAttachments.length}, fileRefs=${fileReferences.length}`);
 
       // Longer timeout for chat sends to tolerate complex agent tasks and high-latency model responses.
-      const timeoutMs = 330000;
+      const timeoutMs = 30 * 60_000;
       const result = await gatewayManager.rpc('chat.send', rpcParams, timeoutMs);
       logger.info(`[chat:sendWithMedia] RPC result: ${JSON.stringify(result)}`);
       return { success: true, result };