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/ipc/process/handler.ts

@@ -25,7 +25,7 @@ export async function isProcessRunning(): Promise<boolean> {
       command = `${cmd} /FI "IMAGENAME eq Antigravity.exe" /NH`;
     } else {
       // macOS and Linux (native)
-      command = 'pgrep -x Antigravity';
+      command = 'pgrep -xi Antigravity';
     }
 
     logger.debug(`Checking process with command: ${command}`);
@@ -189,18 +189,22 @@ export async function closeAntigravity(): Promise<void> {
       if (p.pid === currentPid) {
         return false;
       }
-      // Exclude this electron app (if named Antigravity Manager)
-      if (p.cmd.includes('Antigravity Manager')) {
+      // Exclude this electron app (if named Antigravity Manager or antigravity-manager)
+      if (p.cmd.includes('Antigravity Manager') || p.cmd.includes('antigravity-manager')) {
         return false;
       }
-      // Match Antigravity
+      // Match Antigravity (but not manager)
       if (platform === 'win32') {
         return (
           p.cmd.includes('Antigravity.exe') ||
           (p.cmd.includes('antigravity') && !p.cmd.includes('manager'))
         );
       } else {
-        return p.cmd.includes('Antigravity') || p.cmd.includes('antigravity');
+        // Explicit !manager check for Linux/macOS to be defensive
+        return (
+          (p.cmd.includes('Antigravity') || p.cmd.includes('antigravity')) &&
+          !p.cmd.includes('manager')
+        );
       }
     });