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>

src/app/page.tsx

@@ -1,5 +1,6 @@
 import { prisma } from "@/lib/prisma"
 import Link from "next/link"
+import Navigation from "@/components/Navigation"
 
 export const dynamic = "force-dynamic"
 
@@ -24,10 +25,10 @@ export default async function Home() {
     include: {
       matches: {
         include: {
-          team1P1: true,
-          team1P2: true,
-          team2P1: true,
-          team2P2: true,
+          player1P1: true,
+          player1P2: true,
+          player2P1: true,
+          player2P2: true,
         },
         orderBy: { playedAt: "desc" },
       },
@@ -50,6 +51,7 @@ export default async function Home() {
 
   return (
     <div className="min-h-screen bg-gradient-to-br from-green-50 to-blue-50">
+      <Navigation />
       <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-12">
         {/* Header Section */}
         <div className="text-center mb-12">
@@ -178,7 +180,7 @@ export default async function Home() {
                     <div className="flex justify-between items-center">
                       <div className="flex-1 text-center">
                         <div className="text-sm font-medium text-gray-900">
-                          {match.team1P1.name} & {match.team1P2.name}
+                          {match.player1P1?.name} & {match.player1P2?.name}
                         </div>
                         <div className="text-lg font-bold text-gray-800">
                           {match.team1Score}
@@ -187,7 +189,7 @@ export default async function Home() {
                       <div className="px-3 text-gray-500">vs</div>
                       <div className="flex-1 text-center">
                         <div className="text-sm font-medium text-gray-900">
-                          {match.team2P1.name} & {match.team2P2.name}
+                          {match.player2P1?.name} & {match.player2P2?.name}
                         </div>
                         <div className="text-lg font-bold text-gray-800">
                           {match.team2Score}