feat: Implement tournament schedule tab and fix E2E tests (#27)

## Summary

This PR implements the tournament schedule tab functionality and fixes all remaining E2E test failures.

### Changes Included

1. **Tournament Schedule Feature**
   - Added tournament schedule page at `/admin/tournaments/[id]/schedule`
   - Implemented "Generate Schedule" button functionality
   - Added schedule generation logic for round-robin tournaments

2. **E2E Test Fixes**
   - Fixed database connection issues in production builds
   - Improved test reliability with better error handling and debugging
   - Updated test infrastructure to use environment variables instead of hardcoded values

3. **CI/CD Updates**
   - Added E2E test job to PR workflow
   - Configured tests to run against development database
   - Moved database password to Gitea secrets

4. **Code Quality**
   - Removed hardcoded passwords from codebase
   - Improved Prisma client configuration
   - Enhanced authentication and navigation components

### Test Results
All 16 E2E test scenarios are now passing:
- Authentication tests: ✅
- Registration tests: ✅
- Tournament schedule tests: ✅
- Player schedule tests: ✅
- Admin navigation tests: ✅

### Database Configuration
- Tests run against `euchre_camp_dev` database
- Production builds use environment variables for database configuration
- Database password stored in Gitea secrets as `DB_PASSWORD`

### CI Pipeline
The PR workflow now includes:
1. Unit tests
2. E2E tests (using production build)
3. Version bump analysis

E2E tests must pass before PR can be merged.

Reviewed-on: #27
Co-authored-by: David Gwilliam <dhgwilliam@gmail.com>
Co-committed-by: David Gwilliam <dhgwilliam@gmail.com>

package.json

@@ -15,9 +15,10 @@
     "test:unit:sequential": "bun test src/__tests__/unit/ --max-concurrency=1",
     "test:acceptance": "bun x playwright test e2e/",
     "test:acceptance:headed": "bun x playwright test e2e/ --headed",
-    "test:acceptance:cucumber": "bun cucumber-js --config e2e/cucumber/cucumber.config.ts",
-    "test:acceptance:cucumber:pretty": "bun cucumber-js --config e2e/cucumber/cucumber.config.ts --format pretty:cucumber-pretty",
-    "cucumber": "bun cucumber-js --config e2e/cucumber/cucumber.config.ts",
+    "test:acceptance:cucumber": "DATABASE_URL=$(grep DATABASE_URL .env.development | cut -d'=' -f2 | tr -d '\"') DATABASE_PROVIDER=postgresql bun cucumber-js --config e2e/cucumber/cucumber.config.ts",
+    "test:acceptance:cucumber:pretty": "DATABASE_URL=$(grep DATABASE_URL .env.development | cut -d'=' -f2 | tr -d '\"') DATABASE_PROVIDER=postgresql bun cucumber-js --config e2e/cucumber/cucumber.config.ts --format pretty:cucumber-pretty",
+    "test:acceptance:cucumber:prod": "bun run build && (trap 'kill $(jobs -p) 2>/dev/null || true' EXIT; DATABASE_URL=${DATABASE_URL:-$(grep DATABASE_URL .env.development | cut -d'=' -f2 | tr -d '\"')} DATABASE_PROVIDER=${DATABASE_PROVIDER:-postgresql} bun run start & echo 'Waiting for server to start...'; for i in {1..30}; do if curl -s http://localhost:3000 > /dev/null 2>&1; then echo 'Server ready!'; break; fi; sleep 1; done; npm run test:acceptance:cucumber)",
+    "cucumber": "DATABASE_URL=$(grep DATABASE_URL .env.development | cut -d'=' -f2 | tr -d '\"') DATABASE_PROVIDER=postgresql bun cucumber-js --config e2e/cucumber/cucumber.config.ts",
     "db:switch": "bun run scripts/switch-database.js",
     "db:setup-postgres": "bun run scripts/setup-postgres.js",
     "db:setup-dev": "bun run scripts/setup-postgres.js",