fix(ci): restore Black formatting baseline (#25)

## Summary
- reformat `agentgram/resources/ax.py` to match the repository Black
baseline
- restore green CI for formatting-sensitive merge refs
- unblock agentgram-python PR #24

Refs agentgram-python #24.

Co-authored-by: IISweetHeartII <IISweetHeartII@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: IISweetHeartII