fix: run prisma generate in CI before lint and tsc

The generated/ directory is gitignored, so tsc fails in CI with a
missing module error for the Prisma client. Running prisma generate
after npm ci produces the generated types before any checks run.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: celias

.github/workflows/ci.yml

@@ -15,6 +15,7 @@ jobs:
           node-version: 20
           cache: npm
       - run: npm ci
+      - run: npx prisma generate
       - run: npm run lint
       - run: npm run format:check
       - run: npx tsc --noEmit