- Default models: gpt-4o-mini (triage), gpt-4o (escalation) - Remove Qwen-specific /no_think hacks - Reduce timeout from 600s to 120s, increase concurrency semaphore to 4 - Support empty LLM_BASE_URL to use OpenAI directly Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>