feat: 配置 WebView 数据目录，优化 WebView 性能；更新 homeUrl 方法以支持更好的 URL 生成逻辑

android/app/src/main/kotlin/io/openim/flutter/openim/MainActivity.kt

@@ -13,6 +13,7 @@ import android.util.Base64
 import android.util.Log
 import android.webkit.ServiceWorkerController
 import android.webkit.WebSettings
+import android.webkit.WebView
 import androidx.core.content.FileProvider
 import io.flutter.embedding.android.FlutterActivity
 import org.conscrypt.Conscrypt
@@ -29,8 +30,10 @@ class MainActivity : FlutterActivity() {
     private val WEBVIEW_CACHE_CHANNEL = "io.openim.flutter.im_webview_app/webview_cache"
     private val TAG = "MainActivity"
     private val MAX_BRANDING_ICON_SIZE = 192
+    private val WEBVIEW_DATA_DIRECTORY_SUFFIX = "h5_shell_fresh_profile_v2"
 
     override fun onCreate(savedInstanceState: android.os.Bundle?) {
+        configureWebViewDataDirectory()
         // 华为/荣耀/OPPO 等国产设备：在任意网络请求之前同步安装 Conscrypt，修复 SSL 握手失败（无 GMS 时系统 SSL 实现不完整）
         try {
             Security.insertProviderAt(Conscrypt.newProvider(), 1)
@@ -133,6 +136,20 @@ class MainActivity : FlutterActivity() {
         }
     }
 
+    private fun configureWebViewDataDirectory() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.P) {
+            return
+        }
+
+        try {
+            WebView.setDataDirectorySuffix(WEBVIEW_DATA_DIRECTORY_SUFFIX)
+        } catch (e: IllegalStateException) {
+            Log.w(TAG, "WebView data directory already initialized: ${e.message}")
+        } catch (e: Exception) {
+            Log.w(TAG, "WebView data directory configure failed: ${e.message}")
+        }
+    }
+
     private fun readLongArgument(value: Any?): Long? {
         return when (value) {
             is Int -> value.toLong()

lib/config/app_config.dart

@@ -38,10 +38,13 @@ class AppConfig {
 
   static String _normalizeHomeUrl(String host) {
     final value = host.trim();
-    if (value.startsWith('http://') || value.startsWith('https://')) {
-      return value.endsWith('/') ? value : '$value/';
-    }
-    return 'https://$value/';
+    final normalized =
+        value.startsWith('http://') || value.startsWith('https://')
+            ? value
+            : 'https://$value';
+    final uri = Uri.parse(normalized);
+    final path = uri.path.isEmpty ? '/' : uri.path;
+    return uri.replace(path: path).toString();
   }
 
   static String _withShellBranding(

test/widget_test.dart

@@ -11,16 +11,20 @@ void main() {
     );
   });
 
-  test('passes shell branding name and logo to the H5 URL', () {
+  test('loads the configured H5 root URL with shell branding', () {
     const logo = 'data:image/png;base64,abc+/=';
 
     final uri = Uri.parse(
       AppConfig.homeUrl(appName: 'Shell Test', appLogo: logo),
     );
 
+    expect(uri.scheme, 'https');
+    expect(uri.host, 'h5-im.imharry.work');
+    expect(uri.path, '/');
     expect(uri.queryParameters['flutter_shell'], '1');
     expect(uri.queryParameters['shell_app_name'], 'Shell Test');
     expect(uri.queryParameters.containsKey('shell_app_logo'), isFalse);
+    expect(uri.queryParameters['shell_cache_bust'], isNotEmpty);
     expect(uri.toString(), isNot(contains('%25')));
     expect(Uri.splitQueryString(uri.fragment)['shell_app_logo'], logo);
   });