@mytec: iter2.4.2 start

desktop/main.js

@@ -276,7 +276,10 @@ function createMainWindow() {
       store.set('windowState', bounds);
     } catch (_e) {}
     isQuitting = true;
+    // Graceful shutdown is async but we also do sync kill as safety net
+    gracefulShutdown().catch(() => {});
     killBackend();
+    killAllBackendProcesses();
   });
 
   // Load frontend
@@ -360,6 +363,67 @@ function killBackend() {
   log(`[KILL] Backend cleanup complete (PID was ${pid})`);
 }
 
+/**
+ * Nuclear option: kill ALL rfcp-server processes by name.
+ * This catches orphaned workers that PID-based kill misses.
+ */
+function killAllBackendProcesses() {
+  log('[KILL] killAllBackendProcesses() — killing by process name...');
+
+  if (process.platform === 'win32') {
+    try {
+      execSync('taskkill /F /IM rfcp-server.exe /T', {
+        stdio: 'ignore',
+        timeout: 5000
+      });
+      log('[KILL] taskkill /IM rfcp-server.exe completed');
+    } catch (_e) {
+      // Error means no processes found — OK
+      log('[KILL] No rfcp-server.exe processes found (or already killed)');
+    }
+  } else {
+    try {
+      execSync('pkill -9 -f rfcp-server', {
+        stdio: 'ignore',
+        timeout: 5000
+      });
+      log('[KILL] pkill rfcp-server completed');
+    } catch (_e) {
+      log('[KILL] No rfcp-server processes found');
+    }
+  }
+}
+
+/**
+ * Graceful shutdown: ask backend to clean up, then force kill everything.
+ */
+async function gracefulShutdown() {
+  log('[SHUTDOWN] Requesting graceful shutdown...');
+
+  // Step 1: Ask backend to clean up workers and exit
+  try {
+    const controller = new AbortController();
+    const timeout = setTimeout(() => controller.abort(), 2000);
+    await fetch('http://127.0.0.1:8888/api/system/shutdown', {
+      method: 'POST',
+      signal: controller.signal
+    });
+    clearTimeout(timeout);
+    log('[SHUTDOWN] Backend acknowledged shutdown');
+  } catch (_e) {
+    log('[SHUTDOWN] Backend did not respond — force killing');
+  }
+
+  // Step 2: Wait briefly for graceful exit
+  await new Promise(r => setTimeout(r, 500));
+
+  // Step 3: PID-based kill (catches the main process)
+  killBackend();
+
+  // Step 4: Name-based kill (catches orphaned workers)
+  killAllBackendProcesses();
+}
+
 // ── App lifecycle ──────────────────────────────────────────────────
 
 app.whenReady().then(async () => {
@@ -393,6 +457,7 @@ app.on('window-all-closed', () => {
   log('[CLOSE] window-all-closed fired');
   isQuitting = true;
   killBackend();
+  killAllBackendProcesses();
 
   if (process.platform !== 'darwin') {
     app.quit();
@@ -409,11 +474,13 @@ app.on('before-quit', () => {
   log('[CLOSE] before-quit fired');
   isQuitting = true;
   killBackend();
+  killAllBackendProcesses();
 });
 
 app.on('will-quit', () => {
   log('[CLOSE] will-quit fired');
   killBackend();
+  killAllBackendProcesses();
 
   if (backendLogStream) {
     try { backendLogStream.end(); } catch (_e) {}
@@ -427,6 +494,7 @@ process.on('exit', () => {
     console.log(`[KILL] process.exit handler, backendPid=${backendPid}`);
   } catch (_e) { /* log stream may be closed */ }
 
+  // PID-based kill
   if (backendPid) {
     try {
       if (process.platform === 'win32') {
@@ -438,6 +506,24 @@ process.on('exit', () => {
       // Best effort
     }
   }
+
+  // Name-based kill — catches orphaned workers
+  killAllBackendProcesses();
+});
+
+// Handle SIGINT/SIGTERM (Ctrl+C, system shutdown)
+process.on('SIGINT', () => {
+  try { log('[SIGNAL] SIGINT received'); } catch (_e) {}
+  killBackend();
+  killAllBackendProcesses();
+  process.exit(0);
+});
+
+process.on('SIGTERM', () => {
+  try { log('[SIGNAL] SIGTERM received'); } catch (_e) {}
+  killBackend();
+  killAllBackendProcesses();
+  process.exit(0);
 });
 
 // ── IPC Handlers ───────────────────────────────────────────────────