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>

tests/test_news_relax.py

@@ -0,0 +1,62 @@
+# tests/test_news_relax.py
+from __future__ import annotations
+
+import os
+import unittest
+from unittest.mock import patch
+
+
+class NewsRelaxTests(unittest.TestCase):
+    def test_strip_relax_prefix(self):
+        from daily.news.sanitize import strip_relax_window_prefix
+
+        self.assertEqual(
+            strip_relax_window_prefix("放宽窗口：苹果起诉 OpenAI"),
+            "苹果起诉 OpenAI",
+        )
+        self.assertEqual(
+            strip_relax_window_prefix("放宽至48小时：某新闻"),
+            "某新闻",
+        )
+        self.assertEqual(
+            strip_relax_window_prefix("正常摘要无前缀"),
+            "正常摘要无前缀",
+        )
+
+    def test_backfill_disabled_does_not_reinsert_pushed(self):
+        from daily.news.fetch import _apply_pushed_dedup_with_backfill
+
+        fresh_only = [
+            {
+                "link": "https://example.com/fresh",
+                "title": "fresh",
+                "source_name": "S",
+                "published_fmt": "07-14",
+                "desc_short": "新",
+                "summary_plain": "新",
+            }
+        ]
+        picked = [
+            {
+                "link": "https://example.com/old",
+                "title": "old",
+                "source_name": "S",
+                "published": "2026-07-13T10:00:00+00:00",
+                "summary": "旧闻",
+            }
+        ]
+        with patch("daily.news.pushed_links.filter_unpushed_items", return_value=list(fresh_only)):
+            with patch.dict(os.environ, {"DAILY_NEWS_BACKFILL": "0"}, clear=False):
+                out = _apply_pushed_dedup_with_backfill(
+                    fresh_only + [{"link": "https://example.com/old", "title": "old"}],
+                    picked,
+                    date_str="2026-07-14",
+                    limit=5,
+                )
+        links = [x.get("link") for x in out]
+        self.assertIn("https://example.com/fresh", links)
+        self.assertNotIn("https://example.com/old", links)
+
+
+if __name__ == "__main__":
+    unittest.main()