feat: throttle no-change notifications daily

tests/test_ticketing.py

@@ -203,6 +203,35 @@ class TicketingStateTest(unittest.TestCase):
 
             self.assertEqual(ticketing.load_tickets_state(state_path), expected_state)
 
+    def test_should_send_notification_always_sends_when_tickets_changed(self):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            state_path = os.path.join(tmpdir, "no_change_notification_state.json")
+            ticket = {"id": 42, "write_date": "2026-07-24 12:00:00"}
+
+            self.assertTrue(ticketing.should_send_notification([ticket], state_path))
+
+    @patch("ticketing_setup.get_today", return_value="2026-07-27")
+    def test_should_send_no_change_notification_once_per_day(self, get_today):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            state_path = os.path.join(tmpdir, "no_change_notification_state.json")
+
+            self.assertTrue(ticketing.should_send_notification([], state_path))
+
+            ticketing.record_no_change_notification(state_path)
+
+            self.assertFalse(ticketing.should_send_notification([], state_path))
+            get_today.assert_called()
+
+    @patch("ticketing_setup.get_today", return_value="2026-07-28")
+    def test_should_send_no_change_notification_again_next_day(self, get_today):
+        with tempfile.TemporaryDirectory() as tmpdir:
+            state_path = os.path.join(tmpdir, "no_change_notification_state.json")
+            ticketing.save_json_state(state_path, {
+                "last_no_change_notification_date": "2026-07-27",
+            })
+
+            self.assertTrue(ticketing.should_send_notification([], state_path))
+
     @patch("ticketing_setup.requests.post")
     def test_fetch_odoo_tickets_authenticates_and_returns_result(self, post):
         auth_response = Mock()