Fix: Linux tray quit and zombie icons (#24)

* Fix: Linux tray quit and zombie icons (#23)

- Add before-quit handler to set isQuitting flag
- Change pgrep -x to pgrep -xi for case-insensitive matching on Linux
- Add antigravity-manager to self-kill exclusion filter
- Destroy existing tray before creating new one in initTray()
- Destroy tray in will-quit handler
- Export destroyTray function for cleanup

Fixes #23

Co-Authored-By: Claude Opus 4.5 <[email protected]>

* Fix: Address code review feedback

- Add icon validation before creating tray (isEmpty check)
- Add try/catch around tray.destroy() calls for error handling
- Add try/catch around destroyTray() in will-quit handler
- Add explicit !manager check in Linux process filter for defensive coding

Co-Authored-By: Claude Opus 4.5 <[email protected]>

---------

Co-authored-by: Jirka <[email protected]>
Co-authored-by: Claude Opus 4.5 <[email protected]>

src/main.ts

@@ -14,7 +14,7 @@ import { CloudMonitorService } from './services/CloudMonitorService';
 // Static Imports to fix Bundle Resolution Errors
 import { AuthServer } from './ipc/cloud/authServer';
 import { bootstrapNestServer, stopNestServer } from './server/main';
-import { initTray, setTrayLanguage } from './ipc/tray/handler';
+import { initTray, setTrayLanguage, destroyTray } from './ipc/tray/handler';
 import { rpcHandler } from './ipc/handler';
 import { ConfigManager } from './ipc/config/manager';
 
@@ -149,8 +149,18 @@ app.on('child-process-gone', (event, details) => {
   logger.error('Child process gone:', details);
 });
 
+app.on('before-quit', () => {
+  isQuitting = true;
+  logger.info('App before-quit event triggered - isQuitting set to true');
+});
+
 app.on('will-quit', (event) => {
   logger.info('App will quit event triggered');
+  try {
+    destroyTray();
+  } catch (err) {
+    logger.error('Failed to destroy tray during will-quit', err);
+  }
 });
 
 app.on('quit', (event, exitCode) => {