Initial TrueGrowth source import

apps/electron/preload.cjs

@@ -0,0 +1,49 @@
+const { contextBridge, ipcRenderer } = require('electron');
+
+const localCdnPreference = {
+  cdn: 'local',
+  latency: 0,
+  timestamp: Date.now(),
+};
+
+const windowControls = {
+  minimize: () => ipcRenderer.invoke('truegrowth-window:minimize'),
+  toggleMaximize: () => ipcRenderer.invoke('truegrowth-window:toggle-maximize'),
+  close: () => ipcRenderer.invoke('truegrowth-window:close'),
+  getState: () => ipcRenderer.invoke('truegrowth-window:is-maximized'),
+  onStateChange: (callback) => {
+    if (typeof callback !== 'function') {
+      return () => undefined;
+    }
+    const listener = (_event, state) => callback(state);
+    ipcRenderer.on('truegrowth-window:state', listener);
+    return () =>
+      ipcRenderer.removeListener('truegrowth-window:state', listener);
+  },
+};
+
+const themeBridge = {
+  getSystemTheme: () => ipcRenderer.invoke('truegrowth-theme:get-system'),
+  onSystemThemeChange: (callback) => {
+    if (typeof callback !== 'function') {
+      return () => undefined;
+    }
+    const listener = (_event, state) => callback(state);
+    ipcRenderer.on('truegrowth-theme:system', listener);
+    return () =>
+      ipcRenderer.removeListener('truegrowth-theme:system', listener);
+  },
+};
+
+contextBridge.exposeInMainWorld('trueGrowthRuntime', {
+  app: 'TrueGrowth',
+  platform: process.platform,
+  assetMode: 'local',
+  localApiBaseUrl: 'http://127.0.0.1:48177/local-api',
+  windowControls,
+  theme: themeBridge,
+});
+
+contextBridge.exposeInMainWorld('__OPENTU_DESKTOP__', true);
+contextBridge.exposeInMainWorld('__OPENTU_CDN__', localCdnPreference);
+contextBridge.exposeInMainWorld('__AITU_CDN__', localCdnPreference);