fix(frontend): resolve TypeScript 5.x peer dep ERESOLVE on npm ci

[github-actions]

Root cause

The MFE commit (befd956) added vite, @originjs/vite-plugin-federation, and @vitejs/plugin-react to frontend/package.json devDependencies but did not regenerate package-lock.json. This caused npm ci in CI to detect the lock file was out of sync and attempt a fresh dependency resolution.

During that fresh resolution, npm hit an ERESOLVE error:

npm error ERESOLVE could not resolve
npm error While resolving: react-scripts@5.0.1
npm error Found: typescript@5.8.3
npm error peerOptional typescript@"^3.2.1 || ^4" from react-scripts@5.0.1

react-scripts@5.0.1 only supports TypeScript ≤ 4.x as a peer dep, but the project uses typescript@^5.2.2. npm v7+ enforces peer deps strictly, so this fails without an explicit override.

Fix

Two changes to frontend/:

1. package.json — added "overrides": { "typescript": "^5.2.2" }. npm's overrides field explicitly resolves the conflict, telling npm "use TypeScript 5.x regardless of peer dep constraints" and suppressing the ERESOLVE.

2. package-lock.json — regenerated with npm install (strict mode, with overrides active) so all peer dependencies (including @testing-library/dom etc.) are present and npm ci --dry-run passes cleanly.

No TypeScript 5-specific syntax is used in the source code, so this is a safe change. Vite, @originjs/vite-plugin-federation, and @vitejs/plugin-react all work fine with the TypeScript 5 compiler.

Test plan

• npm ci --dry-run passes in frontend/
• CI lint-and-test job passes on the merged PR

Fixes #42