fix: generate solution artifacts during workshop setup

[kentcdodds]

Summary

• make the durable repository-level artifact generator target solution apps only
• generate React Router route types and migrate/generate TypedSQL Prisma clients for every solution app
• scope root typecheck to that generator and root lint to deploy tooling, avoiding intentionally incomplete problem apps and stale test fixtures
• leave validate.yml untouched so Update Workshops cannot remove the fix

Verification

• npm run typecheck
• npm run lint
• generated route types and Prisma clients for all 12 solution apps only
• Setup passed on Ubuntu, Windows, and macOS
• Test and Cursor Bugbot passed

CI: https://github.com/epicweb-dev/react-e2e-testing-with-playwright/actions/runs/30446826649