chore(deps): update all dev dependencies

[AliceR]

Brings all dev dependencies up to their latest versions, except where blocked upstream (see below). One commit per upgrade so each is easy to review or revert.

Majors

• vite 7 → 8 — vite.config.ts now uses import.meta.dirname (__dirname is unsupported by Vite's native config loader)
• vite-plugin-dts 4 → 5 — outDir option renamed to outDirs. Emitted .d.ts file set is unchanged; verified a consumer typechecks against dist/ with both node10 and bundler resolution
• typescript 5.9 → 6.0
• @testing-library/jest-dom 6 → 7, jest-fetch-mock 3 → 4
• globals 16 → 17, eslint-plugin-react-refresh 0.4 → 0.5

Plus all minor/patch updates (react 19.3, @tanstack/react-query 5.104, jest 30.5, typescript-eslint 8.71, prettier 3.9, …).

Other changes

• Removed @vitejs/plugin-react — it was never registered in vite.config.ts
• Declared @eslint/js — eslint.config.js imports it, but it was only present transitively via eslint 9 (eslint 10 drops it)
• ESLint ignores **/build — the example app's local CRA build output was being linted

Held back

Package	Reason
typescript 7	typescript-eslint requires <6.1, ts-jest requires <7
eslint 10	eslint-plugin-react 7.37.5 (latest) crashes on it (context.getFilename removed) — tried and reverted
@types/node 26	CI runs Node 22 (.nvmrc); kept on latest 24.x
vite 8.3.2, globals 17.13.0	Published <24h before this update; held at 8.3.1 / 17.12.0 (and rolldown 1.2.11), in line with pnpm's default minimumReleaseAge (see #69)

Notes

• vite-plugin-dts 5 doesn't forward its typescript peer to unplugin-dts (yarn peer warning). Harmless with the node-modules linker.
• example/ (CRA / react-scripts 5) is not touched here.

Verification

Clean yarn install --immutable, then yarn lint, yarn test (94/94) and yarn build all pass with no warnings.

🤖 Generated with Claude Code