- Increase default context from 3 to 10 lines (git -U flag + config)
  - Add --context N CLI flag and GitHub Action input to override per run
  - Number all diff lines sent to LLM (context before/after, removed lines)
    to eliminate hallucinated file:line references
  - Show context_after in LLM-formatted diff (was parsed but never sent)
  - Add .yml/.yaml to reviewed file types (GitHub Actions, docker-compose, k8s)
  - Increase default max_tokens_per_request from 4096 to 8192
  - Strengthen prompt: tell LLM how many context lines are included and
    instruct it not to flag constructs outside the visible area
  - Validate action input 'context' as integer in shell to prevent injection

  Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>