feat: add settings dialog with render mode selection

- Add SettingDialogManager with radio-style render mode picker (simple/balance/advanced)
- Add getRenderMode/setRenderMode API to Engine and EngineManager layers
- Wire setting toolbar button to toggle the settings dialog
- Add i18n keys for settings dialog (zh-CN/en-US)
- Add version display at bottom-right of engine wrapper
- Bump version to 1.1.7, rebuild and sync demo libs

vite.config.ts

@@ -2,6 +2,7 @@ import { defineConfig } from 'vite';
 import dts from 'vite-plugin-dts';
 import { resolve } from 'path';
 import cssInjectedByJs from 'vite-plugin-css-injected-by-js';
+import pkg from './package.json';
 
 export default defineConfig(() => {
   return {
@@ -25,6 +26,9 @@ export default defineConfig(() => {
       open: '/demo/index.html',
       allowedHosts: true,
     },
+    define: {
+      __APP_VERSION__: JSON.stringify(pkg.version),
+    },
     build: {
       lib: {
         entry: resolve(__dirname, 'src/index.ts'),