[RyPope]

Stacked on #23 (React 19). This replaces Dependabot's grouped bump in #10, which failed npm ci with ERESOLVE.

Package	From	To
vite	6.0.5	8.3.5
@vitejs/plugin-react	4.3.4	6.1.2
vitest	2.1.8	5.0.5
eslint / @eslint/js	9.17	10.14 / 10.0
eslint-plugin-react-hooks	5.1	7.1
eslint-plugin-react-refresh	0.4	0.5
typescript-eslint	8.18	8.72
typescript	5.7.2	5.9.3 (not 7)
prettier	3.4	3.9
playwright	1.49	1.64
openapi-typescript	7.4	7.13
globals / @types/katex	15 / 0.16.7	17 / 0.16.8

Why TypeScript 5.9, not 7

typescript-eslint 8.72 accepts TypeScript <6.1 and openapi-typescript 7.13 accepts ^5.x, so 5.9.3 is the newest version every tool supports. This is what broke #10. Revisit TypeScript 7 when both tools widen their ranges.

Breaking changes handled

• react-hooks 7 (React Compiler rules) flagged six reads of a ref during render in Workspace: useSplit returned its container ref in the same object as the pane size. useSplit now stores the container element in state through a callback ref, and Workspace destructures the hook results. No lint rules are disabled.
• The old lint and test packages were removed before installing the new ones, so the lockfile resolves cleanly. Runtime dependency versions are unchanged (I compared them in the lockfile).

Node

Vitest 5 needs Node ^22.12, and ESLint 10 needs ^22.13. CI (node-version: "22") and the web build stage in backend/Dockerfile (node 22.23) already satisfy both, so neither changes.

Verification

• npm run typecheck, npm test (17 passed), npm run lint (0 warnings), npm run format:check, npm run build. npm run api-types leaves the generated types unchanged.
• In the browser on the Vite 8 dev server against a running stack: the workspace loads, dragging the split pane resizes it and saves the size, Run returns results, and the console shows no errors.