Align OpenAPI with OWASP Spectral rules

[kennethaasan]

Summary

• add OWASP Spectral + OWASP API Governance rulesets for linting
• tighten OpenAPI with standard error responses, rate-limit/CORS headers, and schema limits
• update tests + generated OpenAPI types; exclude build output from tsconfig

Testing

• npm run spectral
• npx spectral lint openapi.yaml --fail-severity=warn
• npm run lint (warns about baseline-browser-mapping age)
• npm run tsc
• npm run test

[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	87.74% (🎯 75%)	4491 / 5118
🔵	Statements	87.74% (🎯 75%)	4491 / 5118
🔵	Functions	82.47% (🎯 85%)	160 / 194
🔵	Branches	81.23% (🎯 75%)	632 / 778

File Coverage

File	Stmts	Branches	Functions	Lines	Uncovered Lines
Changed Files
src/app/page.tsx	100%	100%	100%	100%
src/app/api/fettmattis/route.ts	48.97%	60%	50%	48.97%	19-70, 81-87, 95-101, 108, 161-172
src/app/api/fettmattis/[fettmattisId]/route.ts	52.08%	40%	100%	52.08%	17-22, 28-31, 44-56
src/app/api/leaderboard/fettmattis/route.ts	0%	0%	0%	0%	1-49
src/app/rounds/rounds-client.tsx	85.62%	65.71%	25%	85.62%	133-141, 160-162, 176-178, 192-199, 201-203, 209-213, 215-217, 221-222, 225-226, 230, 235, 282-284, 323, 353-355, 385-387
src/components/Leaderboard.tsx	97.89%	86.53%	88.88%	97.89%	89, 180-181, 190, 281-283
src/components/fettmattis-table.tsx	93.9%	76%	80%	93.9%	59, 68-75, 174
src/lib/db-client.ts	91.98%	74.65%	96.87%	91.98%	89, 111, 120-121, 126-127, 134-135, 174-175, 198, 200-208, 224-225, 253-254, 263-264, 348-349, 376-377, 402-403, 408-409, 502-503, 532-533, 552-553, 592-593, 618-619, 777-778, 782-783, 880-881, 885-886
src/lib/api/fettmattis-client.ts	100%	100%	100%	100%
src/lib/api/generated.ts	100%	100%	100%	100%
src/lib/api/response-helpers.ts	100%	100%	100%	100%
src/lib/api/schemas.ts	99.28%	75%	100%	99.28%	114
src/lib/db/schema.ts	100%	100%	100%	100%

Generated in workflow #250 for commit 30a9ad3 by the Vitest Coverage Report Action