Rebrand project from sunstone to solstone
Complete project rename with all references updated to lowercase "solstone":
- Package name and entry point in pyproject.toml
- GitHub URLs updated to solpbc/solstone
- File rename: think/sunstone.py → think/solstone.py
- Function rename: convert_revai_to_sunstone → convert_revai_to_solstone
- Environment variables: SUNSTONE_MCP_* → SOLSTONE_MCP_*
- State directory: ~/.local/state/sunstone → ~/.local/state/solstone
- LocalStorage key: sunstone:notification_history → solstone:notification_history
- All documentation and agent persona files updated
- Fixed entry point filter to include observe.* and muse.* packages
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>