Dev environment setup, build/test pointers, GSD workflow, boundary-gate
discipline, conventional-commit conventions matching the existing log,
test-double naming taxonomy, anti-pattern checklist, and step-by-step
guides for adding an MCP tool and adding a HUD button + bus event.
Includes a compaction-recovery section for AI agents.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
