docs: update GTK3→GTK4 across wiki docs - _Sidebar: add GTK-Migrations link under Tech design - lenzu-desktop-issues: 'GTK4 rejected' → 'GTK4 migration completed' - planning: update status, UI toolkit section, system deps refs - release-procedure: clarify GTK4 dep migration note - technical-design: stack, arch diagram, dep evaluation updated
docs: add pnpm-workspace.yaml and release.yml GTK4 dep pitfalls
docs: migrate all documentation from lenzu/docs/ to wiki Consolidate all documentation into the GitHub Wiki for centralized discoverability: - Move 19 .md + 1 .puml + 3 images into lenzu/ directory - Move prototypes-desktop-issues.md into prototypes/ directory - Create _Sidebar.md with categorized navigation - Create prototypes-reference.md from lenzu-prototypes README - Rewrite internal cross-doc links to wiki-style (strip .md) - Update scores.md image paths to raw GitHub URLs