Add HeXi bot codebase: custom plugins, web frontends, tests

- hexi core: message handling, rate limiting, cooldown, plugin manager
- Custom plugins: BF stats, daily check-in, quotes, persona cards, etc.
- Community plugins vendored under hexi/plugins with local fixes
- Web admin frontends (learning-chat, persona-admin), unified hexi/web
- Tests for rate_limit/cooldown/memes/persona; poetry.lock

Co-Authored-By: Claude <noreply@anthropic.com>

hexi/plugins/nonebot_plugin_group_daily_analysis/bot_manager.py

@@ -0,0 +1,36 @@
+"""NoneBot 版 BotManager：管理 OneBot 适配器实例。"""
+
+from __future__ import annotations
+
+from typing import Any
+
+
+class BotManager:
+    def __init__(self):
+        self._adapters: dict[str, Any] = {}
+
+    def register_adapter(self, adapter: Any, platform_id: str | None = None) -> None:
+        pid = platform_id or getattr(adapter, "platform_id", "onebot") or "onebot"
+        self._adapters[str(pid)] = adapter
+
+    def set_bot_instance(self, bot_instance: Any, platform_id: str | None = None) -> None:
+        """兼容接口：按平台登记一个适配器。"""
+        pid = platform_id or "onebot"
+        from .adapter import OneBotAdapter
+        self.register_adapter(OneBotAdapter(bot_instance, {"platform_id": pid}), pid)
+
+    def get_adapter(self, platform_id: str | None = None) -> Any | None:
+        if not self._adapters:
+            return None
+        if platform_id and str(platform_id) in self._adapters:
+            return self._adapters[str(platform_id)]
+        return next(iter(self._adapters.values()))
+
+    def get_adapter_platform_id(self, adapter: Any) -> str:
+        return str(getattr(adapter, "platform_id", "onebot"))
+
+    def get_platform_ids(self) -> list[str]:
+        return list(self._adapters.keys())
+
+    def get_platform_count(self) -> int:
+        return len(self._adapters)