feat: 添加测试用例并优化代码结构

refactor(permission_manager): 调整初始化顺序和逻辑
fix(admin_manager): 修复初始化逻辑和目录创建问题
feat(ws): 优化Bot实例初始化条件
feat(message): 增强MessageSegment功能并添加测试
feat(events): 支持字符串格式的消息解析
test: 添加核心功能测试用例
refactor(plugin_manager): 改进插件路径处理
style: 清理无用导入和代码
chore: 更新依赖项

tests/test_models.py

@@ -0,0 +1,75 @@
+import pytest
+from models.message import MessageSegment
+from models.objects import GroupInfo, StrangerInfo
+
+class TestMessageSegment:
+    def test_text_segment(self):
+        seg = MessageSegment.text("Hello")
+        assert seg.type == "text"
+        assert seg.data["text"] == "Hello"
+        assert str(seg) == "Hello"
+
+    def test_at_segment(self):
+        seg = MessageSegment.at(123456)
+        assert seg.type == "at"
+        assert seg.data["qq"] == "123456"
+        assert str(seg) == "[CQ:at,qq=123456]"
+
+    def test_image_segment(self):
+        seg = MessageSegment.image("http://example.com/img.jpg", cache=False, proxy=False)
+        assert seg.type == "image"
+        assert seg.data["file"] == "http://example.com/img.jpg"
+        assert str(seg) == "[CQ:image,file=http://example.com/img.jpg,cache=0,proxy=0]"
+
+    def test_face_segment(self):
+        seg = MessageSegment.face(123)
+        assert seg.type == "face"
+        assert seg.data["id"] == "123"
+        assert str(seg) == "[CQ:face,id=123]"
+
+    def test_reply_segment(self):
+        seg = MessageSegment.reply(1001)
+        assert seg.type == "reply"
+        assert seg.data["id"] == "1001"
+        assert str(seg) == "[CQ:reply,id=1001]"
+
+    def test_add_segments(self):
+        seg1 = MessageSegment.text("Hello ")
+        seg2 = MessageSegment.at(123)
+        combined = seg1 + seg2
+        assert isinstance(combined, list)
+        assert len(combined) == 2
+        assert combined[0] == seg1
+        assert combined[1] == seg2
+
+    def test_add_segment_and_string(self):
+        seg = MessageSegment.at(123)
+        combined = seg + " Hello"
+        assert isinstance(combined, list)
+        assert len(combined) == 2
+        assert combined[0] == seg
+        assert combined[1].type == "text"
+        assert combined[1].data["text"] == " Hello"
+
+class TestObjects:
+    def test_group_info(self):
+        data = {
+            "group_id": 123456,
+            "group_name": "Test Group",
+            "member_count": 10,
+            "max_member_count": 100
+        }
+        group = GroupInfo(**data)
+        assert group.group_id == 123456
+        assert group.group_name == "Test Group"
+
+    def test_stranger_info(self):
+        data = {
+            "user_id": 111111,
+            "nickname": "Stranger",
+            "sex": "male",
+            "age": 18
+        }
+        user = StrangerInfo(**data)
+        assert user.user_id == 111111
+        assert user.nickname == "Stranger"