Generate the two governing docs from handoff.md:
- rules.md: STRICT RULES R1-R10, each with rationale + correct/forbidden example
- CLAUDE.md: product, stack, folder map, commands, conventions, before-you-code checklist
Add a $HOME-rooted .gitignore that blocks all secrets and home-dir dotfiles
(explicit-add-only workflow). Track handoff.md + kickoff-prompt.md as context.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>