Rename core -> sdk (plugin SDK, self-documenting)

sdk/plugin_error.py

@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""插件异常层级 — 结构化错误处理"""
+import logging
+logger = logging.getLogger(__name__)
+
+class PluginError(Exception):
+    """插件基础异常"""
+    def __init__(self, message: str, plugin_name: str = None, *args):
+        self.plugin_name = plugin_name
+        super().__init__(f"[{plugin_name or 'unknown'}] {message}", *args)
+
+class PluginLoadError(PluginError):
+    """插件加载失败"""
+    pass
+
+class PluginPermissionError(PluginError):
+    """插件权限不足"""
+    pass
+
+class PluginCommandError(PluginError):
+    """插件命令执行错误"""
+    pass
+
+class PluginNetworkError(PluginError):
+    """插件网络操作错误"""
+    pass
+
+class PluginConfigError(PluginError):
+    """插件配置错误"""
+    pass