@mytec: iter2.4 ready for testing

desktop/main.js

@@ -270,11 +270,11 @@ function createMainWindow() {
 
   // Save window state on close and trigger shutdown
   mainWindow.on('close', () => {
+    log('[CLOSE] Window close event fired, isQuitting=' + isQuitting);
     try {
       const bounds = mainWindow.getBounds();
       store.set('windowState', bounds);
     } catch (_e) {}
-    log('Main window closing — killing backend');
     isQuitting = true;
     killBackend();
   });
@@ -321,34 +321,43 @@ function createMainWindow() {
 
 function killBackend() {
   const pid = backendPid || backendProcess?.pid;
-  if (!pid) return;
+  if (!pid) {
+    log('[KILL] killBackend() called — no backend PID to kill');
+    return;
+  }
 
-  log(`Killing backend (PID ${pid})...`);
+  log(`[KILL] killBackend() called, platform=${process.platform}, PID=${pid}`);
 
   try {
     if (process.platform === 'win32') {
       // Windows: taskkill with /F (force) /T (tree — kills child processes too)
+      log(`[KILL] Running: taskkill /F /T /PID ${pid}`);
       execSync(`taskkill /F /T /PID ${pid}`, { stdio: 'ignore' });
+      log('[KILL] taskkill completed successfully');
     } else {
       // Unix: kill process group
       try {
+        log(`[KILL] Sending SIGTERM to process group -${pid}`);
         process.kill(-pid, 'SIGTERM');
       } catch (_e) {
+        log(`[KILL] Process group kill failed, sending SIGTERM to PID ${pid}`);
         process.kill(pid, 'SIGTERM');
       }
     }
   } catch (e) {
+    log(`[KILL] Primary kill failed: ${e.message}, trying SIGKILL fallback`);
     // Fallback: try normal kill via process handle
     try {
       backendProcess?.kill('SIGKILL');
+      log('[KILL] Fallback SIGKILL sent via process handle');
     } catch (_e2) {
-      // Already dead — that's fine
+      log('[KILL] Fallback also failed — process likely already dead');
     }
   }
 
   backendPid = null;
   backendProcess = null;
-  log('Backend killed');
+  log(`[KILL] Backend cleanup complete (PID was ${pid})`);
 }
 
 // ── App lifecycle ──────────────────────────────────────────────────
@@ -381,7 +390,7 @@ app.whenReady().then(async () => {
 });
 
 app.on('window-all-closed', () => {
-  log('Event: window-all-closed');
+  log('[CLOSE] window-all-closed fired');
   isQuitting = true;
   killBackend();
 
@@ -397,13 +406,13 @@ app.on('activate', () => {
 });
 
 app.on('before-quit', () => {
-  log('Event: before-quit');
+  log('[CLOSE] before-quit fired');
   isQuitting = true;
   killBackend();
 });
 
 app.on('will-quit', () => {
-  log('Event: will-quit');
+  log('[CLOSE] will-quit fired');
   killBackend();
 
   if (backendLogStream) {
@@ -414,6 +423,10 @@ app.on('will-quit', () => {
 
 // Last resort: ensure backend is killed when Node process exits
 process.on('exit', () => {
+  try {
+    console.log(`[KILL] process.exit handler, backendPid=${backendPid}`);
+  } catch (_e) { /* log stream may be closed */ }
+
   if (backendPid) {
     try {
       if (process.platform === 'win32') {