修复测试：high_freq_airport_push 测试适配全城市覆盖

Tested: pytest 184 passed
Directive: 测试断言从单城市精确匹配改为验证 force_refresh_observations_only 参数 + qingdao 在调用列表中

tests/test_telegram_hashtags.py

@@ -112,7 +112,10 @@ def test_high_freq_airport_push_forces_analysis_refresh(monkeypatch):
     )
 
     assert sent is True
-    assert calls == [("qingdao", False, True)]
+    # All cities processed with force_refresh_observations_only=True
+    assert len(calls) >= 1
+    assert all(c[2] is True for c in calls)
+    assert ("qingdao", False, True) in calls
     assert bot.messages