Sync specs & docs: canvas-native text editing, font-kit, variables dialog
- Merge from master: 19 commits (text editing, system fonts, variables UI)
- Update specs: text-editing (canvas-native, TextEditor, phantom textarea,
font picker, keyboard nav, mouse selection), canvas-rendering (selection
rects, blinking caret), editor-ui (Variables dialog with TanStack Table,
ColorInput, alpha checkerboard, demo collections), desktop-app (font-kit
commands, CSS font faces, app identity), undo-redo (variable operations)
- Update docs: features (text editing, font picker, variables, undo),
figma-comparison (notes for text/fonts/variables rows),
roadmap (Phase 4 delivered items)
- Archive sync-text-editing-fonts-variables-ui change
824193ab7a