refactor(config): 简化EULA验证并统一环境变量配置管理

- 重构EULA验证机制，从复杂的文件哈希验证改为简单的环境变量验证
- 统一host和port配置，优先从环境变量读取而非配置文件
- 移除ServerConfig配置类，简化配置结构
- 添加.env文件自动创建和管理功能
- 更新相关模板和文档注释

src/common/server.py

@@ -4,6 +4,7 @@ from typing import Optional
 from uvicorn import Config, Server as UvicornServer
 from src.config.config import global_config
 from rich.traceback import install
+import os
 
 install(extra_lines=3)
 
@@ -98,5 +99,14 @@ def get_global_server() -> Server:
     """获取全局服务器实例"""
     global global_server
     if global_server is None:
-        global_server = Server(host=global_config.server.host,port=int(global_config.server.port),)
+        
+        host = os.getenv("HOST", "127.0.0.1")
+        port_str = os.getenv("PORT", "8000")
+        
+        try:
+            port = int(port_str)
+        except ValueError:
+            port = 8000
+            
+        global_server = Server(host=host, port=port)
     return global_server