feat: 新增企微已推送新闻 link 去重缓存

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

tests/test_wecom_delta.py

@@ -3,7 +3,9 @@
 from __future__ import annotations
 
 import os
+import tempfile
 import unittest
+from pathlib import Path
 from unittest.mock import patch
 
 from daily.config import (
@@ -14,6 +16,7 @@ from daily.config import (
     skip_push_when_silent,
     wecom_mode,
 )
+from daily.news.pushed_links import filter_unpushed_items, record_pushed_links
 
 
 class ConfigHelpersTests(unittest.TestCase):
@@ -40,3 +43,19 @@ class ConfigHelpersTests(unittest.TestCase):
     def test_delta_baseline_fallback_default(self):
         with patch.dict(os.environ, {}, clear=True):
             self.assertEqual(delta_baseline_fallback(), "full")
+
+
+class NewsPushedLinksTests(unittest.TestCase):
+    def test_filter_and_record_roundtrip(self):
+        with tempfile.TemporaryDirectory() as tmp:
+            cache = Path(tmp) / "pushed-news-links.json"
+            items = [
+                {"title": "A", "link": "https://example.com/a?utm_source=x"},
+                {"title": "B", "link": "https://example.com/b"},
+            ]
+            with patch("daily.news.pushed_links._cache_path", return_value=cache):
+                with patch("daily.news.pushed_links.news_dedup_days", return_value=7):
+                    record_pushed_links("2026-07-08", ["https://example.com/a"])
+                    out = filter_unpushed_items(items, date_str="2026-07-09")
+            self.assertEqual(len(out), 1)
+            self.assertEqual(out[0]["link"], "https://example.com/b")