Quoted YAML numerics ("60") reached the SDK as strings; read stt.openai.timeout /
max_retries through _config_number like every other numeric stt key. The QQ
adapter's OpenAI-compatible STT call carried the same fixed 30s and now honours
platforms.qqbot.extra.stt.timeout (default 60) so a cold-starting self-hosted
model is not cut off there either. Document the keys and the trade-off.
Co-authored-by: Paolo Antinori <pantinor@redhat.com>