fix: index.html强制no-cache(浏览器缓存致前端改动不生效,子Tab看不到根因)

server.py

@@ -230,7 +230,12 @@ def _save_watchlist(data):
 
 @app.route("/")
 def index():
-    return send_from_directory(app.static_folder, "index.html")
+    # 2026-08-18 强制不缓存 index.html（浏览器缓存导致前端改动不生效，老莫反馈子Tab看不到）
+    resp = send_from_directory(app.static_folder, "index.html")
+    resp.headers["Cache-Control"] = "no-cache, no-store, must-revalidate"
+    resp.headers["Pragma"] = "no-cache"
+    resp.headers["Expires"] = "0"
+    return resp
 
 
 @app.route("/api/watch")