Exclude dev files from protected-files + add max-patch-files + recreate-ref

Autoloop can't create PRs because go.mod, go.sum, and other dev files
are on the default protected list. Every iteration silently falls back
to creating an issue instead of a PR.

- Exclude go.mod, go.sum, package.json, requirements.txt, etc.
- Add max-patch-files: 500
- Add recreate-ref: true

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mrjf