fix: remove wechatagent-specific references, make fully generic

bridge/ask_novelist.py

@@ -30,7 +30,6 @@ def ensure_novel_in_workspace(novel_path: str = None) -> str | None:
     if not novel_path or not os.path.isfile(novel_path):
         # Try common default paths
         candidates = [
-            "/home/program/wechat-workspace/穿越未来之男人不好当.txt",
             "./novel.txt",
             os.path.expanduser("~/novel.txt"),
         ]