Sync latest TrueGrowth updates

apps/electron/preload.cjs

@@ -35,6 +35,23 @@ const themeBridge = {
   },
 };
 
+const updatesBridge = {
+  getState: () => ipcRenderer.invoke('truegrowth-update:get-state'),
+  check: () => ipcRenderer.invoke('truegrowth-update:check'),
+  download: () => ipcRenderer.invoke('truegrowth-update:download'),
+  install: () => ipcRenderer.invoke('truegrowth-update:install'),
+  openChannel: () => ipcRenderer.invoke('truegrowth-update:open-channel'),
+  onStateChange: (callback) => {
+    if (typeof callback !== 'function') {
+      return () => undefined;
+    }
+    const listener = (_event, state) => callback(state);
+    ipcRenderer.on('truegrowth-update:state', listener);
+    return () =>
+      ipcRenderer.removeListener('truegrowth-update:state', listener);
+  },
+};
+
 contextBridge.exposeInMainWorld('trueGrowthRuntime', {
   app: 'TrueGrowth',
   platform: process.platform,
@@ -42,6 +59,7 @@ contextBridge.exposeInMainWorld('trueGrowthRuntime', {
   localApiBaseUrl: 'http://127.0.0.1:48177/local-api',
   windowControls,
   theme: themeBridge,
+  updates: updatesBridge,
 });
 
 contextBridge.exposeInMainWorld('__OPENTU_DESKTOP__', true);