feat: 添加配置读取工具，支持从环境变量和 .env 文件加载 WEREAD_API_KEY

fix: 修复启动脚本中的 Python 解释器路径识别
style: 更新样式以支持按钮最小宽度和灵活布局
docs: 添加项目最终文档，整合各类信息与说明

fetch_data.py

@@ -26,9 +26,10 @@ import time
 import urllib.request
 from datetime import datetime, timezone, timedelta
 
+from config_utils import get_env_value
+
 # ===== 配置 =====
 API_URL = "https://i.weread.qq.com/api/agent/gateway"
-API_KEY = os.environ.get("WEREAD_API_KEY", "")
 SKILL_VERSION = "1.0.4"
 DB_PATH = os.path.join(os.path.dirname(os.path.abspath(__file__)), "weread.db")
 PROJECT_DIR = os.path.dirname(os.path.abspath(__file__))
@@ -54,13 +55,17 @@ def now_str():
 
 def api_call(api_name, **kwargs):
     """调用微信读书 API"""
+    api_key = get_env_value("WEREAD_API_KEY", "")
+    if not api_key:
+        raise RuntimeError("WEREAD_API_KEY 未设置，请检查当前终端环境、项目 .env 或 ~/.zshrc")
+
     body = {"api_name": api_name, "skill_version": SKILL_VERSION}
     body.update(kwargs)
     req = urllib.request.Request(
         API_URL,
         data=json.dumps(body).encode("utf-8"),
         headers={
-            "Authorization": f"Bearer {API_KEY}",
+            "Authorization": f"Bearer {api_key}",
             "Content-Type": "application/json",
         },
         method="POST",
@@ -1020,9 +1025,9 @@ def fetch_notebooks(conn):
 # ===== 主函数 =====
 
 def main():
-    if not API_KEY:
+    if not get_env_value("WEREAD_API_KEY", ""):
         print("错误: 请先设置 WEREAD_API_KEY 环境变量")
-        print("  export WEREAD_API_KEY=wrk-xxxxxxxx")
+        print("  可配置在当前终端、项目 .env，或 ~/.zshrc")
         return
 
     print("=" * 60)