feat: replace historical sync with Kaggle seed for complete 1930-2022 goal data

- scripts/seed.ts: one-time import of Kaggle FIFA dataset (matches_1930_2022.csv,
  world_cup.csv) covering all 964 matches and 2720 goals from 1930-2022 with full
  scorer names, minutes, penalties, and own goals for every tournament
- scripts/sync.ts: stripped to 2026 only (openfootball live data); historical years
  removed since Kaggle is now authoritative for 1930-2022
- Dockerfile: copy app/data into runner image; CMD runs seed.ts before server.js so
  a fresh deployment auto-seeds on first start (skips if already seeded)
- package.json: add 'seed' script; use --force to re-import from updated CSV files
- app/data/kaggle/: bundle Kaggle CSV files in repo

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

Dockerfile

@@ -22,7 +22,8 @@ COPY --from=builder /app/scripts ./scripts
 COPY --from=builder /app/lib ./lib
 COPY --from=builder /app/package.json ./package.json
 COPY --from=builder /app/tsconfig.json ./tsconfig.json
+COPY --from=builder /app/app/data ./app/data
 USER nextjs
 EXPOSE 3000
 ENV PORT=3000 HOSTNAME="0.0.0.0"
-CMD ["node", "server.js"]
+CMD ["sh", "-c", "node_modules/.bin/tsx scripts/seed.ts && node server.js"]