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>

FUTURE_WORK.md

@@ -0,0 +1,22 @@
+# Future Work
+
+## Navigation Header Enhancement
+
+### Current Behavior
+- Admin users see an "Admin" link in the navigation header
+- Clicking "EuchreCamp" brand link goes to the home page
+
+### Proposed Change
+- Remove the "Admin" link from the navigation header
+- For **admin users**: clicking "EuchreCamp" brand link should take them to `/admin`
+- For **non-admin authenticated users**: clicking "EuchreCamp" brand link should take them to their player homepage (`/players/[id]/profile`)
+
+### Implementation Notes
+- This requires updating the Navigation component
+- Need to check user role/permissions in the Navigation component
+- May need to pass user info from server components to client Navigation
+
+### Related Files
+- `src/components/Navigation.tsx` - Main navigation component
+- `src/lib/auth-simple.ts` - Authentication utilities
+- `src/lib/permissions.ts` - Role checking utilities