New file laying out the ground rules for outside contributions ahead
of opening the repo up: dev setup, the test/lint gates a PR needs to
pass, and where the style guide lives (CLAUDE.md is that guide, not
just an AI aid).
The licensing section goes one step past what Apache-2.0's inbound
license clause alone gives — a PR also grants the right to relicense
the contribution later, so the project doesn't end up needing every
past contributor's sign-off if the license ever changes. Framed as
automatic (opening the PR is the agreement), no signature bot.
README's Development section now points to it.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Jean-Pierre MartineauandClaude Sonnet 5