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>

prisma/migrations/20260404032014_refactor_remove_team_model/migration.sql

@@ -0,0 +1,52 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `team1Id` on the `bracket_matchups` table. All the data in the column will be lost.
+  - You are about to drop the column `team2Id` on the `bracket_matchups` table. All the data in the column will be lost.
+  - You are about to drop the column `teamId` on the `event_participants` table. All the data in the column will be lost.
+  - You are about to drop the `teams` table. If the table is not empty, all the data it contains will be lost.
+
+*/
+-- DropForeignKey
+ALTER TABLE "bracket_matchups" DROP CONSTRAINT "bracket_matchups_team1Id_fkey";
+
+-- DropForeignKey
+ALTER TABLE "bracket_matchups" DROP CONSTRAINT "bracket_matchups_team2Id_fkey";
+
+-- DropForeignKey
+ALTER TABLE "event_participants" DROP CONSTRAINT "event_participants_teamId_fkey";
+
+-- DropForeignKey
+ALTER TABLE "teams" DROP CONSTRAINT "teams_eventId_fkey";
+
+-- DropForeignKey
+ALTER TABLE "teams" DROP CONSTRAINT "teams_player1Id_fkey";
+
+-- DropForeignKey
+ALTER TABLE "teams" DROP CONSTRAINT "teams_player2Id_fkey";
+
+-- AlterTable
+ALTER TABLE "bracket_matchups" DROP COLUMN "team1Id",
+DROP COLUMN "team2Id",
+ADD COLUMN     "player1P1Id" INTEGER,
+ADD COLUMN     "player1P2Id" INTEGER,
+ADD COLUMN     "player2P1Id" INTEGER,
+ADD COLUMN     "player2P2Id" INTEGER;
+
+-- AlterTable
+ALTER TABLE "event_participants" DROP COLUMN "teamId";
+
+-- DropTable
+DROP TABLE "teams";
+
+-- AddForeignKey
+ALTER TABLE "bracket_matchups" ADD CONSTRAINT "bracket_matchups_player1P1Id_fkey" FOREIGN KEY ("player1P1Id") REFERENCES "players"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "bracket_matchups" ADD CONSTRAINT "bracket_matchups_player1P2Id_fkey" FOREIGN KEY ("player1P2Id") REFERENCES "players"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "bracket_matchups" ADD CONSTRAINT "bracket_matchups_player2P1Id_fkey" FOREIGN KEY ("player2P1Id") REFERENCES "players"("id") ON DELETE SET NULL ON UPDATE CASCADE;
+
+-- AddForeignKey
+ALTER TABLE "bracket_matchups" ADD CONSTRAINT "bracket_matchups_player2P2Id_fkey" FOREIGN KEY ("player2P2Id") REFERENCES "players"("id") ON DELETE SET NULL ON UPDATE CASCADE;