Thinking models served via llama.cpp without --reasoning-format none
(e.g. Qwen3, DeepSeek-R1) route all tokens into reasoning_content and
return content="". Two call paths were silently broken:
- llm_call / llm_call_async (non-streaming): hard-keyed
data["choices"][0]["message"]["content"] raises KeyError or returns
empty string, discarding the entire response.
- stream_agent_loop end-of-round fallback: when full_response is empty
but round_reasoning has content, the existing code replaced the
response with the generic empty-response error message, discarding
all reasoning tokens that were correctly accumulated during streaming.
Fix: in both non-streaming paths use msg.get("content") or
msg.get("reasoning_content") or "". In the streaming fallback, surface
round_reasoning as the answer before falling through to the error path.
* fix(mcp): invalidate tool prompt cache on connect/disconnect/error
get_tool_descriptions_for_prompt cached its result keyed only on
(disabled_map, len(_tools)). If a server reconnects with the same
tool count (or transitions to error state), the cache was never
busted — the agent received stale tool descriptions for the new
connection state.
Add a _generation counter incremented on every structural change
(successful connect, disconnect, connection error) and include it in
the cache key.
* test(mcp): regression test for _generation cache invalidation
Shreyas S Joshi