Initial commit: SenSu Alpha 0.2.0

- 13-service async plugin framework
- Textual TUI with CLI fallback
- Plugin hot-reload + permission system
- Web management panel (aiohttp)
- Bridge-based inter-module communication
- 10 regression tests

Fixes applied:
- PBKDF2-SHA256 auth (was plain SHA256)
- Auth bypass removed (was allow-all on fail)
- Bare excepts replaced with logged errors
- CatFramework/DreamSu -> SenSu naming unified
- ServiceManager: health checks + startup_order
- Env var credentials (SENSU_ADMIN_PASSWORD etc)

services/__init__.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import logging
+
+logger = logging.getLogger(__name__)
+
+class ServiceManager:
+    """服务管理器"""
+    
+    def __init__(self):
+        self.services = {}
+        # 记录框架启动时间
+        self.start_time = time.time()
+        logger.debug("ServiceManager初始化完成")
+    
+    def register_service(self, name: str, service_instance):
+        """注册服务"""
+        try:
+            if name in self.services:
+                logger.warning(f"服务 {name} 已存在，将被覆盖")
+            self.services[name] = service_instance
+            logger.debug(f"服务 {name} 注册成功")
+        except Exception as e:
+            logger.error(f"注册服务 {name} 时出错: {str(e)}", exc_info=True)
+            raise
+    
+    def get_service(self, name: str):
+        """获取服务"""
+        try:
+            service = self.services.get(name)
+            if not service:
+                logger.error(f"服务 {name} 不存在")
+                raise ValueError(f"服务 {name} 未找到")
+            logger.debug(f"成功获取服务 {name}")
+            return service
+        except Exception as e:
+            logger.error(f"获取服务 {name} 时出错: {str(e)}", exc_info=True)
+            raise
+    
+    def shutdown_all(self):
+        """关闭所有服务"""
+        logger.info("开始关闭所有服务")
+        for name, service in self.services.items():
+            try:
+                if hasattr(service, 'shutdown'):
+                    service.shutdown()
+                    logger.debug(f"服务 {name} 关闭成功")
+            except Exception as e:
+                logger.error(f"关闭服务 {name} 时出错: {str(e)}", exc_info=True)
+        logger.info("所有服务关闭完成")