feat: implement launch at startup functionality in zn-ai

- Added a new setting for "launch at startup" in the GeneralSettingsPanel.
- Integrated the setting with the existing settings store and IPC mechanisms.
- Implemented platform-specific logic for enabling/disabling startup behavior in the main process.
- Created a new service for managing launch at startup settings, including Linux desktop entry creation.
- Added unit tests for the new functionality and ensured existing tests are updated accordingly.
- Updated i18n messages for the new setting in English, Chinese, and Japanese.

electron/main.ts

@@ -14,6 +14,7 @@ import { onProviderChange } from '@electron/service/provider-api-service';
 import { gatewayManager } from '@electron/gateway/manager';
 import { dispatchLocalHostApi } from '@electron/api/router';
 import { syncProviderRuntimeSnapshot } from '@electron/service/provider-runtime-sync';
+import { applyLaunchAtStartupSetting, syncLaunchAtStartupSettingFromConfig } from '@electron/service/launch-at-startup';
 import { ensureBuiltinSkillsInstalled, ensurePreinstalledSkillsInstalled } from '@electron/utils/skill-config';
 
 // 初始化 updater，确保在 app ready 之前或者之中注册好 IPC
@@ -113,8 +114,24 @@ if (started) {
 
 app.whenReady().then(async () => {
   await configManager.init();
+  await syncLaunchAtStartupSettingFromConfig();
   await themeManager.init();
 
+  let launchAtStartup = Boolean(configManager.get(CONFIG_KEYS.LAUNCH_AT_STARTUP));
+  const stopLaunchAtStartupSync = configManager.onConfigChange((config) => {
+    const nextLaunchAtStartup = Boolean(config[CONFIG_KEYS.LAUNCH_AT_STARTUP]);
+    if (nextLaunchAtStartup === launchAtStartup) {
+      return;
+    }
+
+    launchAtStartup = nextLaunchAtStartup;
+    void applyLaunchAtStartupSetting(nextLaunchAtStartup);
+  });
+
+  app.once('will-quit', () => {
+    stopLaunchAtStartupSync();
+  });
+
   void ensureBuiltinSkillsInstalled().catch((error) => {
     log.warn('Failed to install built-in skills:', error);
   });