Avoid Telegram forum fallback to general

src/utils/telegram_push.py

@@ -1768,23 +1768,12 @@ def _process_airport_city(
         except Exception as exc:
             if thread_id and "message thread not found" in str(exc).lower():
                 logger.warning(
-                    "airport push thread missing; retrying main chat city={} chat_id={} thread_id={}",
+                    "airport push skipped missing forum thread city={} chat_id={} thread_id={}",
                     city,
                     chat_id,
                     thread_id,
                 )
-                try:
-                    _rate_limited_send(bot, chat_id, message)
-                    sent = True
-                    continue
-                except Exception as fallback_exc:
-                    logger.warning(
-                        "airport push main chat fallback failed city={} chat_id={}: {}",
-                        city,
-                        chat_id,
-                        fallback_exc,
-                    )
-                    continue
+                continue
             logger.warning("airport push failed city={} chat_id={}: {}", city, chat_id, exc)
 
     if sent:

tests/test_telegram_hashtags.py

@@ -403,7 +403,7 @@ def test_airport_push_rejects_observation_older_than_last_push(monkeypatch):
     assert result is None
 
 
-def test_airport_push_retries_main_chat_when_forum_thread_is_missing(monkeypatch):
+def test_airport_push_does_not_retry_general_when_forum_thread_is_missing(monkeypatch):
     import src.utils.telegram_push as telegram_push
 
     calls = []
@@ -438,11 +438,8 @@ def test_airport_push_retries_main_chat_when_forum_thread_is_missing(monkeypatch
         bot=object(),
     )
 
-    assert result is not None
-    assert calls == [
-        ("chat-1", {"message_thread_id": 99}),
-        ("chat-1", {}),
-    ]
+    assert result is None
+    assert calls == [("chat-1", {"message_thread_id": 99})]
 
 
 def test_airport_push_does_not_fall_back_to_general_when_forum_mapping_is_missing(monkeypatch):