Vibe Coding BUILD Phase

Implement features step-by-step following IMPLEMENTATION_PLAN.md.

Prerequisites Check

Before anything else:

• progress.txt exists? NO → check for IMPLEMENTATION_PLAN.md: Found → create minimal progress.txt, assume DOCUMENT complete, proceed Not found → activate vibe-coding-document
• ./docs/IMPLEMENTATION_PLAN.md exists? NO → activate vibe-coding-doc-implplan
• progress.txt shows DOCUMENT complete? NO → stop, message "Complete DOCUMENT phase first"
• Returning from DEBUG? YES → READ: ## Resume from Debug

Startup Sequence

Run once per project (check progress.txt flags — skip if already done):