Initial commit: 知识库管理器应用

- 实现基于 PySide6 的 GUI 界面
- 集成 FastAPI 知识库服务器 API
- 支持查看、编辑、提交 Markdown 文件
- 包含完整的 pytest-qt 测试套件
- 添加功能列表文档

api_client.py

@@ -0,0 +1,43 @@
+import requests
+from typing import List, Optional
+
+
+class KnowledgeBaseAPI:
+    def __init__(self, base_url: str):
+        self.base_url = base_url.rstrip('/')
+    
+    def get_file_list(self) -> List[str]:
+        """获取服务器上的文件列表"""
+        try:
+            response = requests.get(f"{self.base_url}/list", timeout=10)
+            response.raise_for_status()
+            return response.json()
+        except requests.RequestException as e:
+            raise Exception(f"获取文件列表失败: {str(e)}")
+    
+    def get_file(self, filename: str) -> str:
+        """获取文件内容"""
+        try:
+            response = requests.get(f"{self.base_url}/{filename}/get", timeout=10)
+            response.raise_for_status()
+            return response.text
+        except requests.RequestException as e:
+            raise Exception(f"获取文件 {filename} 失败: {str(e)}")
+    
+    def post_file(self, filename: str, content: str) -> bool:
+        """上传文件内容"""
+        try:
+            files = {'file': (filename, content, 'text/markdown')}
+            response = requests.post(f"{self.base_url}/{filename}/post", files=files, timeout=10)
+            response.raise_for_status()
+            return True
+        except requests.RequestException as e:
+            raise Exception(f"上传文件 {filename} 失败: {str(e)}")
+    
+    def test_connection(self) -> bool:
+        """测试服务器连接"""
+        try:
+            response = requests.get(f"{self.base_url}/list", timeout=5)
+            return response.status_code == 200
+        except requests.RequestException:
+            return False