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)

plugins/example_plugin/permissions.yaml

@@ -0,0 +1,16 @@
+# 示例插件权限申请
+plugin_name: "example_plugin"
+permissions:
+  - "plugin.example.read"
+  - "plugin.example.write"
+  - "plugin.example.execute"
+  - "framework.event.subscribe"
+  - "framework.command.execute"
+
+# 权限说明
+permission_descriptions:
+  plugin.example.read: "读取示例插件数据"
+  plugin.example.write: "写入示例插件数据" 
+  plugin.example.execute: "执行示例插件操作"
+  framework.event.subscribe: "订阅框架事件"
+  framework.command.execute: "执行框架命令"