Tested locally and seems to work well.

What does this PR do?

Added Gemma 4 to reasoning allowlist.

Related Issue

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• [v] ✨ New feature (non-breaking change that adds functionality)
• 🔒 Security fix
• 📝 Documentation update
• ✅ Tests (adding or improving test coverage)
• ♻️ Refactor (no behavior change)
• 🎯 New skill (bundled or hub)

Changes Made

run_agent.py

Added "google/gemma-4" prefix to reasoning_model_prefixes.

How to Test

1. Set "/reasoning show"
2. Sent a message
3. Got a reply with a Reasoning block.

Checklist

Code

• [v] I've read the Contributing Guide
• [v] My commit messages follow Conventional Commits (fix(scope):, feat(scope):, etc.)
• [v] I searched for existing PRs to make sure this isn't a duplicate
• [v] My PR contains only changes related to this fix/feature (no unrelated commits)
• I've run pytest tests/ -q and all tests pass
• I've added tests for my changes (required for bug fixes, strongly encouraged for features)
• [v] I've tested on my platform:

Documentation & Housekeeping

• [N/A] I've updated relevant documentation (README, docs/, docstrings) — or N/A
• [N/A] I've updated cli-config.yaml.example if I added/changed config keys — or N/A
• [N/A] I've updated CONTRIBUTING.md or AGENTS.md if I changed architecture or workflows — or N/A
• [v] I've considered cross-platform impact (Windows, macOS) per the compatibility guide — or N/A
• [N/A] I've updated tool descriptions/schemas if I changed tool behavior — or N/A

Screenshots / Logs