feat: 添加多线程架构支持并优化性能

实现线程管理器以支持高并发场景，添加GIL-free模式提升Python 3.14下的多线程性能
新增B站API集成和本地文件服务器功能，改进镜像插件支持GIF处理
更新文档说明多线程架构和GIL-free模式的使用方法

tests/test_thread_manager.py

@@ -0,0 +1,135 @@
+"""
+线程管理器测试模块
+
+测试多线程功能的正确性，包括：
+1. 线程池的创建和管理
+2. 任务提交和执行
+3. 线程安全的统计信息
+"""
+import asyncio
+import time
+import threading
+from concurrent.futures import ThreadPoolExecutor
+
+import pytest
+
+from core.managers.thread_manager import thread_manager, ThreadManager
+
+
+class TestThreadManager:
+    """线程管理器测试类"""
+    
+    def test_singleton(self):
+        """测试单例模式"""
+        manager1 = ThreadManager()
+        manager2 = ThreadManager()
+        assert manager1 is manager2
+    
+    def test_start_and_shutdown(self):
+        """测试启动和关闭"""
+        manager = ThreadManager()
+        manager.start()
+        assert manager._executor is not None
+        
+        # 提交一个简单任务
+        result = manager.submit_to_main_executor(lambda x: x * 2, 5)
+        assert result == 10
+        
+        manager.shutdown()
+        assert manager._executor is None
+    
+    def test_submit_to_main_executor(self):
+        """测试提交任务到主线程池"""
+        manager = ThreadManager()
+        manager.start()
+        
+        # 测试同步任务
+        result = manager.submit_to_main_executor(lambda x, y: x + y, 3, 4)
+        assert result == 7
+        
+        # 测试异步任务
+        async def async_task(x):
+            await asyncio.sleep(0.1)
+            return x * 2
+        
+        async def run_async():
+            return await manager.submit_to_main_executor_async(async_task, 5)
+        
+        result = asyncio.run(run_async())
+        assert result == 10
+        
+        manager.shutdown()
+    
+    def test_thread_safety(self):
+        """测试线程安全"""
+        manager = ThreadManager()
+        manager.start()
+        
+        results = []
+        errors = []
+        
+        def worker(n):
+            try:
+                time.sleep(0.01)
+                return n * n
+            except Exception as e:
+                errors.append(e)
+                return None
+        
+        # 并发提交多个任务
+        futures = []
+        for i in range(10):
+            future = manager._executor.submit(worker, i)
+            futures.append(future)
+        
+        # 收集结果
+        for future in futures:
+            result = future.result()
+            results.append(result)
+        
+        # 验证所有任务都成功执行
+        assert len(errors) == 0
+        assert len(results) == 10
+        assert sorted(results) == [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
+        
+        manager.shutdown()
+    
+    def test_stats_tracking(self):
+        """测试统计信息"""
+        manager = ThreadManager()
+        manager.start()
+        
+        # 执行一些任务
+        for i in range(5):
+            manager.submit_to_main_executor(lambda x: x, i)
+        
+        stats = manager.get_stats()
+        assert stats['total_tasks'] >= 5
+        
+        manager.shutdown()
+
+
+class TestReverseWSManagerThreading:
+    """反向 WebSocket 管理器线程安全测试"""
+    
+    def test_locks_exist(self):
+        """测试锁是否正确初始化"""
+        from core.managers.reverse_ws_manager import ReverseWSManager
+        
+        manager = ReverseWSManager()
+        
+        # 检查所有锁是否存在
+        assert hasattr(manager, '_clients_lock')
+        assert hasattr(manager, '_bots_lock')
+        assert hasattr(manager, '_pending_requests_lock')
+        assert hasattr(manager, '_load_lock')
+        assert hasattr(manager, '_health_lock')
+        assert hasattr(manager, '_processed_events_lock')
+        assert hasattr(manager, '_processed_messages_lock')
+        assert hasattr(manager, '_processing_events_lock')
+        assert hasattr(manager, '_message_locks_lock')
+        assert hasattr(manager, '_message_lock_times_lock')
+
+
+if __name__ == '__main__':
+    pytest.main([__file__, '-v'])