build: 修复iOS/macOS构建配置，适配macOS Keychain问题

1. 添加Pods依赖配置到Xcode工作区
2. 调整macOS权限配置，临时替换Keychain为shared_preferences
3. 重构secure_storage适配macOS兼容性问题
4. 整理iOS权限配置，移除重复声明
5. 更新插件依赖和Podfile配置

lib/core/storage/secure_storage.dart

@@ -1,12 +1,14 @@
 /// ============================================================
 /// 闲言APP — 安全存储
 /// 创建时间: 2026-04-20
-/// 更新时间: 2026-04-20
+/// 更新时间: 2026-05-22
 /// 作用: flutter_secure_storage 封装，用于敏感数据存储
-/// 上次更新: 初始创建
+/// 上次更新: macOS Keychain 兼容性修复，临时使用 shared_preferences 替代
 /// ============================================================
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 /// 安全存储键名常量
 class SecureKeys {
@@ -26,6 +28,7 @@ class SecureKeys {
 ///
 /// 用于存储敏感数据如 Token、密码等，
 /// 底层使用 Keychain (iOS) / EncryptedSharedPreferences (Android)。
+/// macOS 临时使用 shared_preferences 避免 Keychain 配置问题
 class SecureStorage {
   SecureStorage._();
 
@@ -33,29 +36,84 @@ class SecureStorage {
     accessibility: KeychainAccessibility.first_unlock_this_device,
   );
 
+  static const _macosOptions = MacOsOptions(
+    usesDataProtectionKeychain: false,
+    accessibility: KeychainAccessibility.first_unlock_this_device,
+    groupId: null,
+  );
+
   static const FlutterSecureStorage _storage = FlutterSecureStorage(
     iOptions: _iosOptions,
+    mOptions: _macosOptions,
   );
 
+  // macOS 临时使用 shared_preferences 替代
+  static SharedPreferences? _prefs;
+
+  static Future<void> _ensurePrefs() async {
+    _prefs ??= await SharedPreferences.getInstance();
+  }
+
+  static bool get _isMacOS => defaultTargetPlatform == TargetPlatform.macOS;
+
   // ============================================================
   // 通用读写
   // ============================================================
 
   /// 读取
-  static Future<String?> read(String key) => _storage.read(key: key);
+  static Future<String?> read(String key) async {
+    if (_isMacOS) {
+      await _ensurePrefs();
+      return _prefs!.getString(key);
+    } else {
+      return _storage.read(key: key);
+    }
+  }
 
   /// 写入
-  static Future<void> write(String key, String value) =>
-      _storage.write(key: key, value: value);
+  static Future<void> write(String key, String value) async {
+    if (_isMacOS) {
+      await _ensurePrefs();
+      await _prefs!.setString(key, value);
+    } else {
+      await _storage.write(key: key, value: value);
+    }
+  }
 
   /// 删除
-  static Future<void> delete(String key) => _storage.delete(key: key);
+  static Future<void> delete(String key) async {
+    if (_isMacOS) {
+      await _ensurePrefs();
+      await _prefs!.remove(key);
+    } else {
+      await _storage.delete(key: key);
+    }
+  }
 
   /// 是否包含
-  static Future<bool> containsKey(String key) => _storage.containsKey(key: key);
+  static Future<bool> containsKey(String key) async {
+    if (_isMacOS) {
+      await _ensurePrefs();
+      return _prefs!.containsKey(key);
+    } else {
+      return _storage.containsKey(key: key);
+    }
+  }
 
   /// 清空所有
-  static Future<void> deleteAll() => _storage.deleteAll();
+  static Future<void> deleteAll() async {
+    if (_isMacOS) {
+      await _ensurePrefs();
+      final keys = _prefs!.getKeys();
+      for (final key in keys) {
+        if (key.startsWith('auth_') || key == 'userId') {
+          await _prefs!.remove(key);
+        }
+      }
+    } else {
+      await _storage.deleteAll();
+    }
+  }
 
   // ============================================================
   // 便捷方法