fix: 关闭新闻放宽凑数并剥离放宽窗口文案

Co-authored-by: Cursor <cursoragent@cursor.com>

daily/news/sanitize.py

@@ -0,0 +1,18 @@
+"""新闻文案清洗：剥离「放宽窗口」类凑数前缀。"""
+
+from __future__ import annotations
+
+import re
+
+_RELAX_PREFIX = re.compile(
+    r"^(?:放宽窗口|放宽至[^：:]*)\s*[:：]\s*",
+    re.UNICODE,
+)
+
+
+def strip_relax_window_prefix(text: str) -> str:
+    """去掉开头的「放宽窗口：」/「放宽至…：」前缀。"""
+    raw = (text or "").strip()
+    if not raw:
+        return ""
+    return _RELAX_PREFIX.sub("", raw, count=1).strip()