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/tournaments/[id]/schedule/route.ts

@@ -0,0 +1,378 @@
+import { NextResponse } from "next/server";
+import { prisma } from "@/lib/prisma";
+import { canManageTournament } from "@/lib/permissions";
+import { generateRoundRobin, validateScheduleInput, generateVariableRoundRobin, expectedRounds } from "@/lib/schedule-generator";
+import { generateTeams, generateTeamsWithRotation, generateRandomTeams, type Player, type Team as TeamPairing } from "@/lib/team-generator";
+
+interface RouteParams {
+  params: Promise<{
+    id: string;
+  }>;
+}
+
+/**
+ * GET /api/tournaments/[id]/schedule
+ *
+ * Fetch the tournament schedule (rounds with matchups).
+ */
+export async function GET(_request: Request, { params }: RouteParams) {
+  try {
+    const { id } = await params;
+    const tournamentId = parseInt(id);
+
+    if (isNaN(tournamentId)) {
+      return NextResponse.json(
+        { error: "Invalid tournament ID" },
+        { status: 400 }
+      );
+    }
+
+    const permission = await canManageTournament(tournamentId);
+    if (!permission.allowed) {
+      return NextResponse.json(
+        { error: permission.reason || "Not authorized to view this tournament" },
+        { status: 403 }
+      );
+    }
+
+    const tournament = await prisma.event.findUnique({
+      where: { id: tournamentId },
+      include: {
+        rounds: {
+          orderBy: { roundNumber: "asc" },
+          include: {
+            bracketMatchups: {
+              include: {
+                player1P1: true,
+                player1P2: true,
+                player2P1: true,
+                player2P2: true,
+                match: true,
+              },
+            },
+          },
+        },
+      },
+    });
+
+    if (!tournament) {
+      return NextResponse.json(
+        { error: "Tournament not found" },
+        { status: 404 }
+      );
+    }
+
+    return NextResponse.json({ rounds: tournament.rounds });
+  } catch (error: unknown) {
+    console.error("Error fetching schedule:", error);
+    const message =
+      error instanceof Error ? error.message : "Failed to fetch schedule";
+    return NextResponse.json({ error: message }, { status: 500 });
+  }
+}
+
+/**
+ * POST /api/tournaments/[id]/schedule
+ *
+ * Generate a round-robin schedule for the tournament.
+ * Creates TournamentRound and BracketMatchup records.
+ */
+export async function POST(_request: Request, { params }: RouteParams) {
+  try {
+    const { id } = await params;
+    const tournamentId = parseInt(id);
+
+    if (isNaN(tournamentId)) {
+      return NextResponse.json(
+        { error: "Invalid tournament ID" },
+        { status: 400 }
+      );
+    }
+
+    const permission = await canManageTournament(tournamentId);
+    if (!permission.allowed) {
+      return NextResponse.json(
+        { error: permission.reason || "Not authorized to manage this tournament" },
+        { status: 403 }
+      );
+    }
+
+    // Check tournament exists
+    const tournament = await prisma.event.findUnique({
+      where: { id: tournamentId },
+      include: {
+        participants: {
+          include: {
+            player: true,
+          },
+        },
+        rounds: true,
+      },
+    });
+
+    if (!tournament) {
+      return NextResponse.json(
+        { error: "Tournament not found" },
+        { status: 404 }
+      );
+    }
+
+    // Check if schedule already exists and delete it
+    if (tournament.rounds.length > 0) {
+      // Delete existing rounds and matchups before regenerating
+      await prisma.bracketMatchup.deleteMany({
+        where: { eventId: tournamentId },
+      });
+      await prisma.tournamentRound.deleteMany({
+        where: { eventId: tournamentId },
+      });
+    }
+
+    // Get participants as players
+    const participants: Player[] = tournament.participants.map((p) => ({
+      id: p.player.id,
+      name: p.player.name,
+      currentElo: p.player.currentElo,
+    }));
+
+    // Check minimum participants
+    if (participants.length < 2) {
+      return NextResponse.json(
+        { error: "At least 2 participants are required to generate a schedule" },
+        { status: 400 }
+      );
+    }
+
+    // Generate teams based on configuration
+    const teamDurability = tournament.teamDurability || "permanent";
+    const partnerRotation = (tournament.partnerRotation || "none") as 'none' | 'minimize_repeat' | 'maximize_even' | 'elo_based';
+    const allowByes = tournament.allowByes ?? true;
+
+    // Determine number of teams from participants
+    const tempResult = generateTeams(participants, partnerRotation, allowByes);
+    const teamCount = tempResult.teams.length;
+    
+    if (teamCount < 2) {
+      return NextResponse.json(
+        { error: "At least 2 teams (4 players) are required to generate a schedule" },
+        { status: 400 }
+      );
+    }
+
+    // Calculate number of rounds needed
+    const numRounds = expectedRounds(teamCount);
+
+    if (teamDurability === "permanent") {
+      // ============================================
+      // OPTION 1: FIXED TEAMS
+      // Teams are formed once and stay the same throughout
+      // ============================================
+      
+      // Generate teams once for permanent team tournaments
+      const result = generateTeams(participants, partnerRotation, allowByes);
+      const teamPairings = result.teams.map((t) => ({
+        player1Id: t.player1Id,
+        player2Id: t.player2Id,
+      }));
+
+      // Validate schedule input
+      const validation = validateScheduleInput(teamPairings);
+      if (!validation.valid) {
+        return NextResponse.json(
+          { error: validation.error },
+          { status: 400 }
+        );
+      }
+
+      // Generate schedule using fixed teams
+      const schedule = generateRoundRobin(teamPairings);
+
+      // Create rounds and matchups in a transaction
+      const created = await prisma.$transaction(
+        schedule.map((round) =>
+          prisma.tournamentRound.create({
+            data: {
+              eventId: tournamentId,
+              roundNumber: round.roundNumber,
+              status: "pending",
+              bracketMatchups: {
+                create: round.matchups.map((matchup, idx) => ({
+                  eventId: tournamentId,
+                  player1P1Id: matchup.player1P1Id,
+                  player1P2Id: matchup.player1P2Id,
+                  player2P1Id: matchup.player2P1Id,
+                  player2P2Id: matchup.player2P2Id,
+                  bracketPosition: idx + 1,
+                  status: "pending",
+                })),
+              },
+            },
+            include: {
+              bracketMatchups: {
+                include: {
+                  player1P1: true,
+                  player1P2: true,
+                  player2P1: true,
+                  player2P2: true,
+                },
+              },
+            },
+          })
+        )
+      );
+
+      return NextResponse.json({
+        success: true,
+        roundsCreated: created.length,
+        matchupsCreated: created.reduce(
+          (sum, r) => sum + r.bracketMatchups.length,
+          0
+        ),
+        rounds: created,
+      });
+
+    } else if (teamDurability === "variable") {
+      // ============================================
+      // OPTION 2: PRE-PLANNED VARIABLE
+      // Fresh teams each round, generated before tournament starts
+      // Partners rotate based on selected strategy
+      // ============================================
+      
+      // Track partnerships across all rounds to minimize repeats
+      const allPreviousTeams: TeamPairing[][] = [];
+      
+      // Create a function that generates teams with rotation
+      const generateTeamWithRotation = (players: Player[]): TeamPairing[] => {
+        // For pre-planned variable, we generate fresh teams each round
+        // using the partner rotation strategy and tracking previous partnerships
+        const result = generateTeamsWithRotation(players, allPreviousTeams, partnerRotation, allowByes);
+        
+        // Store the generated teams for future rounds
+        allPreviousTeams.push(result.teams);
+        
+        return result.teams;
+      };
+
+      // Generate the schedule with fresh teams each round
+      const schedule = generateVariableRoundRobin(
+        participants,
+        teamCount,
+        numRounds,
+        generateTeamWithRotation
+      );
+
+      // Create rounds and matchups in a transaction
+      const created = await prisma.$transaction(
+        schedule.map((round) =>
+          prisma.tournamentRound.create({
+            data: {
+              eventId: tournamentId,
+              roundNumber: round.roundNumber,
+              status: "pending",
+              bracketMatchups: {
+                create: round.matchups.map((matchup, idx) => ({
+                  eventId: tournamentId,
+                  player1P1Id: matchup.player1P1Id,
+                  player1P2Id: matchup.player1P2Id,
+                  player2P1Id: matchup.player2P1Id,
+                  player2P2Id: matchup.player2P2Id,
+                  bracketPosition: idx + 1,
+                  status: "pending",
+                })),
+              },
+            },
+            include: {
+              bracketMatchups: {
+                include: {
+                  player1P1: true,
+                  player1P2: true,
+                  player2P1: true,
+                  player2P2: true,
+                },
+              },
+            },
+          })
+        )
+      );
+
+      return NextResponse.json({
+        success: true,
+        roundsCreated: created.length,
+        matchupsCreated: created.reduce(
+          (sum, r) => sum + r.bracketMatchups.length,
+          0
+        ),
+        rounds: created,
+      });
+
+    } else {
+      // ============================================
+      // OPTION 3: DYNAMIC/PROGRESSIVE
+      // Teams formed based on results (bracket-style)
+      // Cannot pre-generate full schedule
+      // ============================================
+      
+      return NextResponse.json({
+        success: true,
+        message: "Dynamic tournaments require completing rounds before scheduling the next one",
+        roundsCreated: 0,
+        matchupsCreated: 0,
+        rounds: [],
+        requiresDynamicScheduling: true,
+      });
+    }
+  } catch (error: unknown) {
+    console.error("Error generating schedule:", error);
+    const message =
+      error instanceof Error ? error.message : "Failed to generate schedule";
+    return NextResponse.json({ error: message }, { status: 500 });
+  }
+}
+
+/**
+ * DELETE /api/tournaments/[id]/schedule
+ *
+ * Delete all rounds and matchups for a tournament.
+ */
+export async function DELETE(_request: Request, { params }: RouteParams) {
+  try {
+    const { id } = await params;
+    const tournamentId = parseInt(id);
+
+    if (isNaN(tournamentId)) {
+      return NextResponse.json(
+        { error: "Invalid tournament ID" },
+        { status: 400 }
+      );
+    }
+
+    const permission = await canManageTournament(tournamentId);
+    if (!permission.allowed) {
+      return NextResponse.json(
+        { error: permission.reason || "Not authorized to manage this tournament" },
+        { status: 403 }
+      );
+    }
+
+    // Delete bracket matchups first (FK constraint)
+    const deletedMatchups = await prisma.bracketMatchup.deleteMany({
+      where: { eventId: tournamentId },
+    });
+
+    // Delete rounds
+    const deletedRounds = await prisma.tournamentRound.deleteMany({
+      where: { eventId: tournamentId },
+    });
+
+    return NextResponse.json({
+      success: true,
+      deletedRounds: deletedRounds.count,
+      deletedMatchups: deletedMatchups.count,
+    });
+  } catch (error: unknown) {
+    console.error("Error deleting schedule:", error);
+    const message =
+      error instanceof Error ? error.message : "Failed to delete schedule";
+    return NextResponse.json({ error: message }, { status: 500 });
+  }
+}