feat: 更新 H5 线路配置逻辑，添加默认线路处理和相关单元测试

lib/config/app_config.dart

@@ -42,8 +42,7 @@ class AppConfig {
 
   static List<H5Line> get h5Lines {
     final configuredUrls = _dartDefinedH5LineUrls.trim().isEmpty
-        ? _normalizedUniqueUrls(_environmentHosts[currentEnvironment] ??
-            const [_bootstrapH5LineUrl])
+        ? _normalizedUniqueUrls(defaultH5LineUrlsForBaseUri(Uri.base))
         : _normalizedUniqueUrls(_dartDefinedH5LineUrls.split(','));
     final urls = configuredUrls.isEmpty
         ? _normalizedUniqueUrls(const [_bootstrapH5LineUrl])
@@ -71,18 +70,26 @@ class AppConfig {
       return const [];
     }
 
-    final homeUri = lines.first.uri;
+    return clientConfigQueryUrisForHomeUri(lines.first.uri);
+  }
+
+  static List<String> defaultH5LineUrlsForBaseUri(Uri baseUri) {
+    final runtimeHomeUrl = _runtimeHomeUrlFromBaseUri(baseUri);
+    if (runtimeHomeUrl != null) {
+      return [runtimeHomeUrl];
+    }
+
+    final environmentHosts = _environmentHosts[currentEnvironment];
+    if (environmentHosts == null || environmentHosts.isEmpty) {
+      return const [_bootstrapH5LineUrl];
+    }
+    return environmentHosts;
+  }
+
+  static List<Uri> clientConfigQueryUrisForHomeUri(Uri homeUri) {
     return [
-      homeUri.replace(
-        path: '/client_config/query',
-        queryParameters: const {},
-        fragment: '',
-      ),
-      homeUri.replace(
-        path: '/api/user/client_config/query',
-        queryParameters: const {},
-        fragment: '',
-      ),
+      _originUriWithPath(homeUri, '/client_config/query'),
+      _originUriWithPath(homeUri, '/api/user/client_config/query'),
     ];
   }
 
@@ -191,6 +198,69 @@ class AppConfig {
     return uri.replace(path: path).toString();
   }
 
+  static String? _runtimeHomeUrlFromBaseUri(Uri baseUri) {
+    if (_isLocalRuntimeUri(baseUri)) {
+      return null;
+    }
+
+    return _originUriWithPath(baseUri, '/').toString();
+  }
+
+  static Uri _originUriWithPath(Uri uri, String path) {
+    final normalizedPath = path.startsWith('/') ? path : '/$path';
+    return Uri.parse('${uri.scheme}://${uri.authority}$normalizedPath');
+  }
+
+  static bool _isLocalRuntimeUri(Uri uri) {
+    if (uri.scheme != 'http' && uri.scheme != 'https') {
+      return true;
+    }
+
+    final host = _normalizeHostForCompare(uri.host);
+    if (host.isEmpty) {
+      return true;
+    }
+
+    if (host == 'localhost' || host.endsWith('.localhost') || host == '::1') {
+      return true;
+    }
+
+    final ipv4Parts = _tryParseIpv4Address(host);
+    if (ipv4Parts == null) {
+      return false;
+    }
+
+    return ipv4Parts[0] == 127 || ipv4Parts.every((part) => part == 0);
+  }
+
+  static String _normalizeHostForCompare(String host) {
+    final normalized = host.trim().toLowerCase();
+    if (normalized.endsWith('.')) {
+      return normalized.substring(0, normalized.length - 1);
+    }
+    return normalized;
+  }
+
+  static List<int>? _tryParseIpv4Address(String host) {
+    final parts = host.split('.');
+    if (parts.length != 4) {
+      return null;
+    }
+
+    final octets = <int>[];
+    for (final part in parts) {
+      if (part.isEmpty || !RegExp(r'^\d+$').hasMatch(part)) {
+        return null;
+      }
+      final value = int.tryParse(part);
+      if (value == null || value < 0 || value > 255) {
+        return null;
+      }
+      octets.add(value);
+    }
+    return octets;
+  }
+
   static String _replaceWildcardHost(
     String value, {
     String Function()? wildcardFactory,