- Add _COMMAND_VERBS guard to _is_likely_location_reply() so messages
starting with imperative verbs (find, search, show, get, ...) are not
mistakenly treated as user location replies. This prevented 'Find
good places' from being used as a retry location, which was causing
the clarification path to never fire and the tool loop to exhaust
MAX_ALL_FAILURE_ROUNDS instead.
- Extract city from comma-delimited fallback address strings when
city/country FKs are absent, e.g. 'Little Turnstile 6, London'
→ 'London', so context-based location retry works for manually-
entered itinerary stops without geocoded FK data.
- Add attempted_location_retry flag: if retry was attempted but all
retry attempts failed, convert result to an execution failure rather
than emitting a clarification prompt (user already provided context
via their itinerary).
- Fix test assertion ordering in test_collection_context_retry_extracts_
city_from_fallback_address: streaming_content must be consumed before
checking mock call counts since StreamingHttpResponse is lazy.
