fix(gateway): handle Windows OpenClaw process exit error during in-process restarts (#794)

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Haze <hazeone@users.noreply.github.com>

electron/gateway/startup-orchestrator.ts

@@ -12,6 +12,8 @@ type StartupHooks = {
   ownedPid?: never; // Removed: pid is now read dynamically in findExistingGateway to avoid stale-snapshot bug
   shouldWaitForPortFree: boolean;
   maxStartAttempts?: number;
+  /** Returns true when the manager still owns a living Gateway process (e.g. after a code-1012 in-process restart). */
+  hasOwnedProcess: () => boolean;
   resetStartupStderrLines: () => void;
   getStartupStderrLines: () => string[];
   assertLifecycle: (phase: string) => void;
@@ -49,6 +51,22 @@ export async function runGatewayStartupSequence(hooks: StartupHooks): Promise<vo
         return;
       }
 
+      // When the Gateway did an in-process restart (WS close 1012), the
+      // UtilityProcess is still alive but its WS server may be mid-rebuild,
+      // so findExistingGateway's quick probe returns null.  Rather than
+      // waiting for the port to free (it never will — the process holds it)
+      // and then spawning a duplicate, wait for the existing process to
+      // become ready and reconnect to it.
+      if (hooks.hasOwnedProcess()) {
+        logger.info('Owned Gateway process still alive (likely in-process restart); waiting for it to become ready');
+        await hooks.waitForReady(hooks.port);
+        hooks.assertLifecycle('start/wait-ready-owned');
+        await hooks.connect(hooks.port);
+        hooks.assertLifecycle('start/connect-owned');
+        hooks.onConnectedToExistingGateway();
+        return;
+      }
+
       logger.debug('No existing Gateway found, starting new process...');
 
       if (hooks.shouldWaitForPortFree) {