fix: 审查阻断 — BOM+信号时序+unused import+exit前等待

packages/server/src/connection.ts

@@ -7,7 +7,7 @@
  * - Connectivity check before registration
  */
 
-import { type DeviceConfig, type DeviceIdentity } from "@yuzu-gca/shared";
+import { type DeviceConfig } from "@yuzu-gca/shared";
 
 export interface ConnectionState {
   status: "disconnected" | "connecting" | "connected" | "reconnecting";

packages/server/src/main.ts

@@ -58,18 +58,20 @@ console.log(`  Gateway: ${config.gateway.url}`);
 console.log(`  Tools: ${toolHandlers.size} implemented`);
 console.log(`  Port: ${port}`);
 
-bootstrap(opts, port).then(() => {
+bootstrap(opts, port).then(async () => {
   console.log(`[Yuzu-GCA] Ready.`);
 
   // Start Gateway connection lifecycle
   const connMgr = new ConnectionManager(config, (state) => {
     console.log(`[Gateway] ${state.status} (attempt ${state.reconnectAttempt})`);
   });
-  connMgr.start();
 
-  // Graceful shutdown
-  process.on("SIGINT", () => { connMgr.stop(); process.exit(0); });
-  process.on("SIGTERM", () => { connMgr.stop(); process.exit(0); });
+  // Register signal handlers BEFORE connection start
+  const shutdown = async () => { connMgr.stop(); setTimeout(() => process.exit(0), 300); };
+  process.on("SIGINT", shutdown);
+  process.on("SIGTERM", shutdown);
+
+  await connMgr.start();
 }).catch(err => {
   console.error(`[Yuzu-GCA] Fatal:`, err);
   process.exit(1);