[arnaud-zg]

Stacked on #2.

Summary

• Bump Vite to 8, Vitest to 4, jsdom to 30, @vitejs/plugin-react to 6, TanStack Store to
  0.11, everything else to its latest within existing ranges
• Rename framer-motion to motion (12 to 13), imports move to motion/react
• Bump lucide-react to 1.x, it dropped brand icons: Github and Linkedin now come from
  @radix-ui/react-icons instead, already a dependency
• TanStack Store 0.11's subscribe() now returns a Subscription object instead of a
  bare unsubscribe function, adjusted the one repository that calls it
• Remove @shadcn/ui, a stub package that was never imported
• Hold TypeScript at 5.9, a jump to 7 is out of scope for a demo repo

flowchart LR
  A[Vite 6 / Vitest 3] --> B[Vite 8 / Vitest 4]
  C[framer-motion 12] --> D[motion 13]
  E[lucide-react brand icons] --> F[radix-ui react-icons]

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Test plan

• pnpm typecheck
• pnpm check
• pnpm build
• pnpm test, same 4 pre-existing failures as chore(tooling): move to pnpm, adopt shared configs, drop eslint #2, unrelated, fixed later in the stack

🤖 Generated with Claude Code

https://claude.ai/code/session_014BcGPRc3sgUJYKihGRXh5g

[arnaud-zg]

Folded into #17 (combined toolchain + bugfix PR).

[arnaud-zg]

Closing as stale/superseded — this branch stack's work already landed on main via a reorganized set of PRs (see #17, #7, #18, #10, #12, #13, #19, #16, #14, #20). Re-merging this branch now would conflict with / partially revert that work.