Starting point for openletter.pub (the pub.openletter.* lexicon namespace for an ATProto-native petition system) and openletter.vote (the AppView and web frontend). Petitions live on the originator's PDS, endorsements on each endorser's. Just scaffolding for now: a README sketching the design, an MIT license, a .gitignore, and the two domain directories with placeholder READMEs. No implementation language or framework chosen yet. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>