- engine.py: drop UnboundLocalError-prone isinstance(response, ...) checks in
except blocks of _handle_responses_request and _handle_messages_request;
emit SSE-shaped error frames mid-stream instead of raw dicts; add missing
blank line between handlers.
- engine_args.py: restructure LMCache HMA guard so the warning branch is
actually reachable when user explicitly sets disable_hybrid_kv_cache_manager=False,
and correct the inverted message (HMA must be disabled = True).
- requirements.txt: drop stray whitespace in transformers version specifier.
Tim Pietrusky
3403889528