- Boolean operations (union, intersection, difference, xor) via i_overlay
with Path shape rendering using earcutr triangulation
- Visual undo tree with branching history, checkout, and fork (Cmd+H)
using Arc-based snapshots for structural sharing
- Consistent Augmented Canvas branding across app title, MCP server,
CLI help text, and error messages
- macOS .app bundle script and Info.plist for Finder integration
- New MCP tool: boolean_op for agent-driven shape composition
- 26 tests passing (5 boolean, 6 history, 15 existing)
