chore: spawn error handling

Author: abose

src-electron/main-app-ipc.js

@@ -83,7 +83,11 @@ function registerAppIpcHandlers() {
         });
 
         childProcess.on('error', (err) => {
+            instance.terminated = true;
             console.error(`Failed to start process (instance ${instanceId}):`, err);
+            if (!sender.isDestroyed()) {
+                sender.send('process-error', instanceId, { message: err.message, code: err.code });
+            }
         });
 
         return instanceId;

src-electron/preload.js

@@ -11,6 +11,7 @@ contextBridge.exposeInMainWorld('electronAppAPI', {
     onProcessStdout: (callback) => ipcRenderer.on('process-stdout', (_event, instanceId, line) => callback(instanceId, line)),
     onProcessStderr: (callback) => ipcRenderer.on('process-stderr', (_event, instanceId, line) => callback(instanceId, line)),
     onProcessClose: (callback) => ipcRenderer.on('process-close', (_event, instanceId, data) => callback(instanceId, data)),
+    onProcessError: (callback) => ipcRenderer.on('process-error', (_event, instanceId, err) => callback(instanceId, err)),
 
     // Quit the app with an exit code (for CI)
     quitApp: (exitCode) => ipcRenderer.invoke('quit-app', exitCode),