- Fix OAuth login: state param, correct scope, JSON token exchange
- Reorganize into 6 packages (brain, skill, soul, memory, auth, cmd)
- 107 tests across 4 packages
- Remove x/net dependency (htmlToText rewritten)
- Add Groq soul file for cloud-hosted Llama
- Rename examples/ → souls/
- Hint `localkin -login` when Claude API key missing

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>