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/api/players/route.ts

@@ -1,4 +1,4 @@
-import { NextResponse } from "next/server";
+import { NextRequest, NextResponse } from "next/server";
 import { prisma } from "@/lib/prisma";
 
 /**
@@ -6,10 +6,22 @@ import { prisma } from "@/lib/prisma";
  * 
  * Get all players with their user associations
  * This is a public endpoint (no authentication required)
+ * Supports search query parameter
  */
-export async function GET() {
+export async function GET(request: NextRequest) {
   try {
+    const { searchParams } = new URL(request.url)
+    const search = searchParams.get('search') || ''
+    const limit = parseInt(searchParams.get('limit') || '50')
+    const offset = parseInt(searchParams.get('offset') || '0')
+
+    const where: any = {}
+    if (search) {
+      where.name = { contains: search, mode: 'insensitive' }
+    }
+
     const players = await prisma.player.findMany({
+      where,
       include: {
         user: {
           select: {
@@ -17,7 +29,9 @@ export async function GET() {
           },
         },
       },
-      orderBy: { name: "asc" },
+      orderBy: { currentElo: 'desc' },
+      take: limit,
+      skip: offset,
     });
 
     return NextResponse.json(players);
@@ -30,3 +44,64 @@ export async function GET() {
     );
   }
 }
+
+/**
+ * POST /api/players
+ * 
+ * Create a new player
+ * This is a public endpoint (no authentication required)
+ * Returns 409 if player with same name already exists
+ */
+export async function POST(request: Request) {
+  try {
+    const body = await request.json();
+    const { name } = body;
+
+    // Validate name
+    if (!name || typeof name !== 'string' || name.trim().length === 0) {
+      return NextResponse.json(
+        { error: "Player name is required" },
+        { status: 400 }
+      );
+    }
+
+    const trimmedName = name.trim();
+    const normalizedName = trimmedName.toLowerCase();
+
+    // Check if player with same name already exists
+    const existingPlayer = await prisma.player.findUnique({
+      where: { normalizedName },
+    });
+
+    if (existingPlayer) {
+      return NextResponse.json(
+        { error: `Player "${trimmedName}" already exists` },
+        { status: 409 }
+      );
+    }
+
+    // Create new player
+    const newPlayer = await prisma.player.create({
+      data: {
+        name: trimmedName,
+        normalizedName,
+        currentElo: 1000,
+        gamesPlayed: 0,
+        wins: 0,
+        losses: 0,
+      },
+    });
+
+    return NextResponse.json(
+      { success: true, player: newPlayer },
+      { status: 201 }
+    );
+  } catch (error: unknown) {
+    console.error("Error creating player:", error);
+    const message = error instanceof Error ? error.message : "Failed to create player";
+    return NextResponse.json(
+      { error: message },
+      { status: 500 }
+    );
+  }
+}