c0992374af
call_model now emits writer({"__start": True}) before LLM inference.
stream_response() converts it to {"__status": label} — distinct from
__meta so the UI shows it immediately without accumulating in the log.
Removes the 10-second silent wait before the first progress message.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>