Phase 1.1 -- React Project Scaffold

Parent: #762

Context

Replace the Vue 3 + PrimeVue web dashboard with a fresh React + shadcn/ui project. This sets up the build tooling and dependency tree.

Scope

• Initialize web/ with React 19 + Vite 8 + TypeScript (strict) + Tailwind v4
• Install and configure shadcn/ui + Radix UI primitives
• Install core dependencies:
  • cmdk (command palette)
  • framer-motion (animations)
  • @xyflow/react (React Flow, org chart)
  • recharts or echarts-for-react (charts -- decide based on Phase 0.1 mockup experience)
  • zustand (state management)
  • react-router (routing)
  • axios (HTTP client)
  • @tanstack/react-query (server state, optional -- evaluate)
• Remove ALL Vue/PrimeVue/Pinia files from web/
• Configure tsconfig.json (strict, path aliases)
• Configure Tailwind with placeholder design tokens (finalized in Phase 2.1)
• Verify npm run dev, npm run build, npm run type-check all work

Deliverables

• Clean React project in web/ that builds and serves
• All dependencies installed and importable
• Old Vue code removed
• package.json scripts: dev, build, lint, type-check, test

Notes

• This does NOT wait for design decisions -- it's pure tooling setup
• Design tokens are placeholders; Phase 2.1 will finalize them
• No components or pages yet -- just the empty shell