admin management 기능 추가

frontend/lib/core/services/auth_proxy_service.dart

@@ -143,6 +143,92 @@ class AuthProxyService {
     }
   }
 
+  static Future<List<dynamic>> listUsers(String adminPassword, {String? query}) async {
+    var uri = Uri.parse('$_baseUrl/api/v1/admin/users');
+    if (query != null && query.isNotEmpty) {
+      uri = uri.replace(queryParameters: {'text': query});
+    }
+
+    final response = await http.get(
+      uri,
+      headers: {
+        'Content-Type': 'application/json',
+        'X-Admin-Password': adminPassword,
+      },
+    );
+
+    if (response.statusCode == 200) {
+      final data = jsonDecode(response.body);
+      return data['users'] ?? [];
+    } else {
+      throw Exception('Failed to list users: ${response.body}');
+    }
+  }
+
+  static Future<void> deleteUser(String adminPassword, String loginId) async {
+    final encodedId = Uri.encodeComponent(loginId);
+    final url = Uri.parse('$_baseUrl/api/v1/admin/users/$encodedId');
+    
+    final response = await http.delete(
+      url,
+      headers: {
+        'Content-Type': 'application/json',
+        'X-Admin-Password': adminPassword,
+      },
+    );
+
+    if (response.statusCode != 200) {
+      throw Exception('Failed to delete user: ${response.body}');
+    }
+  }
+
+  static Future<void> updateUserStatus(String adminPassword, String loginId, String status) async {
+    final encodedId = Uri.encodeComponent(loginId);
+    final url = Uri.parse('$_baseUrl/api/v1/admin/users/$encodedId/status');
+    
+    final response = await http.patch(
+      url,
+      headers: {
+        'Content-Type': 'application/json',
+        'X-Admin-Password': adminPassword,
+      },
+      body: jsonEncode({'status': status}),
+    );
+
+    if (response.statusCode != 200) {
+      throw Exception('Failed to update status: ${response.body}');
+    }
+  }
+
+  static Future<void> updateUserDetails({
+    required String adminPassword,
+    required String loginId,
+    String? email,
+    String? phone,
+    String? displayName,
+  }) async {
+    final encodedId = Uri.encodeComponent(loginId);
+    final url = Uri.parse('$_baseUrl/api/v1/admin/users/$encodedId');
+    
+    final body = <String, dynamic>{};
+    if (email != null) body['email'] = email;
+    if (phone != null) body['phone'] = phone;
+    if (displayName != null) body['displayName'] = displayName;
+
+    final response = await http.patch(
+      url,
+      headers: {
+        'Content-Type': 'application/json',
+        'X-Admin-Password': adminPassword,
+      },
+      body: jsonEncode(body),
+    );
+
+    if (response.statusCode != 200) {
+      throw Exception('Failed to update user: ${response.body}');
+    }
+  }
+
   static Future<void> sendLog(String level, String message, {Map<String, dynamic>? data}) async {
     final url = Uri.parse('$_baseUrl/api/v1/client-log');
     try {