refactor(test): 重构测试套件结构并优化测试配置

feat(test-suite): 新增测试套件模块，包含API测试客户端和测试配置
fix(api): 修复数据库实体和仓库的删除操作返回值
style(api): 统一数据库表名和字段命名
perf(api): 添加缓存注解提升配置查询性能
test(api): 添加H2测试数据库配置支持
chore: 清理旧的测试文件和脚本

test-suite/api/config_api.py

@@ -0,0 +1,45 @@
+"""
+系统配置 API 客户端
+"""
+
+from httpx import AsyncClient
+
+
+class ConfigAPI:
+    """系统配置 API 客户端"""
+    
+    def __init__(self, client: AsyncClient):
+        self.client = client
+    
+    async def get_config_list(self):
+        """获取配置列表"""
+        return await self.client.get('/api/config')
+    
+    async def get_config_by_id(self, config_id):
+        """根据ID获取配置"""
+        return await self.client.get(f'/api/config/{config_id}')
+    
+    async def get_config_by_key(self, config_key):
+        """根据key获取配置"""
+        return await self.client.get(f'/api/config/key/{config_key}')
+    
+    async def create(self, config_data):
+        """创建配置"""
+        return await self.client.post('/api/config', json=config_data)
+    
+    async def update(self, config_id, config_data):
+        """更新配置"""
+        return await self.client.put(f'/api/config/{config_id}', json=config_data)
+    
+    async def delete(self, config_id):
+        """删除配置"""
+        return await self.client.delete(f'/api/config/{config_id}')
+    
+    async def get_all(self):
+        """获取所有配置"""
+        return await self.client.get('/api/config')
+
+
+class SysConfigAPI(ConfigAPI):
+    """系统配置 API (别名)"""
+    pass