feat: complete production-grade monorepo — CLI, docs, playground, tok…

[yaakovcarioca]

…ens, CI

Delivers the full Keter UI system as specified in CLAUDE.md:

Packages:

• packages/tokens: expanded color scale (200–400 shades, warning), CSS custom properties file (css/tokens.css) with light/dark themes, generateCSSVariables()
• packages/react: ThemeProvider (system/light/dark + localStorage), enhanced DashboardLayout with MetricCard, ActivityFeed, NavItem exports
• packages/cli: real init command (detects Next.js/Vite, installs deps, injects tokens, creates tailwind.config.ts and layout file) and add command (scaffolds button, input, modal, card, table, dashboard component files)

Apps:

• apps/docs: full Nextra documentation site — mdx-components.tsx, _meta.json navigation, 11 MDX pages (index, getting-started, installation, components/{button,input,modal,table,card}, dashboard, rtl, cli)
• apps/playground: standalone Vite component showcase with dark mode toggle, RTL toggle, interactive buttons/inputs/modal/cards/table/color palette

Infrastructure:

• turbo.json: migrated pipeline→tasks (Turbo v2), added type-check task
• configs/tailwind/base.js: full color scale with semantic CSS vars
• configs/prettier/index.js: prettier config with tailwindcss plugin
• scripts/generate-docs.ts: auto-doc generator (scans components, extracts TypeScript props/variants, writes MDX pages)
• scripts/build-all.ts: ordered package build script
• .github/workflows/ci.yml: 4-job CI (build, lint, docs, release dry-run)
• .github/templates/bug_report.md: issue template
• ai/install.json: expanded with 5 code examples and full prompt library