feat: migrate from npm to Bun

- Install Bun via mise
- Update package.json scripts to use Bun
- Migrate unit tests from Vitest to Bun test runner
- Migrate component tests from Vitest to Bun test runner
- Configure Bun with DOM environment for React Testing Library
- Keep Playwright for E2E tests (as planned)
- 93/100 tests passing (7 flaky tests when running all together, pass individually)

src/__tests__/unit/tournament-permissions.test.ts

@@ -5,25 +5,25 @@
  * Regression tests for the issue where tournament_admin users were redirected to login
  */
 
-import { describe, test, expect, vi, beforeEach } from 'vitest';
+import { describe, test, expect, mock, beforeEach } from 'bun:test';
 import { canManageTournament, ownsTournament, getManageableTournaments } from '@/lib/permissions';
 import { getSession } from '@/lib/auth-simple';
 import { prisma } from '@/lib/prisma';
 import type { User, Event } from '@prisma/client';
 
 // Mock the getSession and prisma functions
-vi.mock('@/lib/auth-simple', () => ({
-  getSession: vi.fn(),
+mock.module('@/lib/auth-simple', () => ({
+  getSession: mock(() => {}),
 }));
 
-vi.mock('@/lib/prisma', () => ({
+mock.module('@/lib/prisma', () => ({
   prisma: {
     user: {
-      findUnique: vi.fn(),
+      findUnique: mock(() => {}),
     },
     event: {
-      findUnique: vi.fn(),
-      findMany: vi.fn(),
+      findUnique: mock(() => {}),
+      findMany: mock(() => {}),
     },
   },
 }));
@@ -61,16 +61,16 @@ const createMockTournament = (id: number, ownerId: string | null): Event => ({
 
 describe('Tournament Permissions', () => {
   beforeEach(() => {
-    vi.clearAllMocks();
+    mock.clearAllMocks();
   });
 
   describe('canManageTournament', () => {
     test('should allow club_admin to manage any tournament', async () => {
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'admin-1', email: 'admin@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+      }));
+      prisma.user.findUnique.mockImplementation(async () => 
         createMockUser('admin-1', 'admin@example.com', 'club_admin')
       );
 
@@ -79,14 +79,14 @@ describe('Tournament Permissions', () => {
     });
 
     test('should allow tournament_admin to manage their own tournament', async () => {
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'tour-admin-1', email: 'tour@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+      }));
+      prisma.user.findUnique.mockImplementation(async () => 
         createMockUser('tour-admin-1', 'tour@example.com', 'tournament_admin')
       );
-      vi.mocked(prisma.event.findUnique).mockResolvedValue(
+      prisma.event.findUnique.mockImplementation(async () => 
         createMockTournament(1, 'tour-admin-1')
       );
 
@@ -95,14 +95,14 @@ describe('Tournament Permissions', () => {
     });
 
     test('should deny tournament_admin from managing other users tournaments', async () => {
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'tour-admin-1', email: 'tour@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+      }));
+      prisma.user.findUnique.mockImplementation(async () => 
         createMockUser('tour-admin-1', 'tour@example.com', 'tournament_admin')
       );
-      vi.mocked(prisma.event.findUnique).mockResolvedValue(
+      prisma.event.findUnique.mockImplementation(async () => 
         createMockTournament(1, 'other-user-1')
       );
 
@@ -112,11 +112,11 @@ describe('Tournament Permissions', () => {
     });
 
     test('should deny player from managing tournaments', async () => {
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'player-1', email: 'player@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+      }));
+      prisma.user.findUnique.mockImplementation(async () => 
         createMockUser('player-1', 'player@example.com', 'player')
       );
 
@@ -126,7 +126,7 @@ describe('Tournament Permissions', () => {
     });
 
     test('should deny unauthenticated user', async () => {
-      vi.mocked(getSession).mockResolvedValue(null);
+      getSession.mockImplementation(async () => null);
 
       const result = await canManageTournament(999);
       expect(result.allowed).toBe(false);
@@ -136,11 +136,11 @@ describe('Tournament Permissions', () => {
 
   describe('ownsTournament', () => {
     test('should return true if user owns tournament', async () => {
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'owner-1', email: 'owner@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.event.findUnique).mockResolvedValue(
+      }));
+      prisma.event.findUnique.mockImplementation(async () => 
         createMockTournament(1, 'owner-1')
       );
 
@@ -149,11 +149,11 @@ describe('Tournament Permissions', () => {
     });
 
     test('should return false if user does not own tournament', async () => {
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'non-owner-1', email: 'nonowner@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.event.findUnique).mockResolvedValue(
+      }));
+      prisma.event.findUnique.mockImplementation(async () => 
         createMockTournament(1, 'owner-1')
       );
 
@@ -165,11 +165,11 @@ describe('Tournament Permissions', () => {
 
   describe('getManageableTournaments', () => {
     test('should return all tournaments for club_admin', async () => {
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'admin-1', email: 'admin@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+      }));
+      prisma.user.findUnique.mockImplementation(async () => 
         createMockUser('admin-1', 'admin@example.com', 'club_admin')
       );
       
@@ -178,7 +178,7 @@ describe('Tournament Permissions', () => {
         createMockTournament(2, 'user-2'),
         createMockTournament(3, 'user-3'),
       ];
-      vi.mocked(prisma.event.findMany).mockResolvedValue(mockTournaments);
+      prisma.event.findMany.mockImplementation(async () => mockTournaments);
 
       const result = await getManageableTournaments();
       expect(result).toEqual(mockTournaments);
@@ -190,11 +190,11 @@ describe('Tournament Permissions', () => {
     });
 
     test('should return only owned tournaments for tournament_admin', async () => {
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'tour-admin-1', email: 'tour@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+      }));
+      prisma.user.findUnique.mockImplementation(async () => 
         createMockUser('tour-admin-1', 'tour@example.com', 'tournament_admin')
       );
       
@@ -202,7 +202,7 @@ describe('Tournament Permissions', () => {
         createMockTournament(1, 'tour-admin-1'),
         createMockTournament(2, 'tour-admin-1'),
       ];
-      vi.mocked(prisma.event.findMany).mockResolvedValue(mockTournaments);
+      prisma.event.findMany.mockImplementation(async () => mockTournaments);
 
       const result = await getManageableTournaments();
       expect(result).toEqual(mockTournaments);
@@ -217,11 +217,11 @@ describe('Tournament Permissions', () => {
     });
 
     test('should return only non-draft tournaments for players', async () => {
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'player-1', email: 'player@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+      }));
+      prisma.user.findUnique.mockImplementation(async () => 
         createMockUser('player-1', 'player@example.com', 'player')
       );
       
@@ -229,7 +229,7 @@ describe('Tournament Permissions', () => {
         createMockTournament(1, 'user-1'),
         createMockTournament(2, 'user-2'),
       ];
-      vi.mocked(prisma.event.findMany).mockResolvedValue(mockTournaments);
+      prisma.event.findMany.mockImplementation(async () => mockTournaments);
 
       const result = await getManageableTournaments();
       expect(result).toEqual(mockTournaments);
@@ -249,14 +249,14 @@ describe('Tournament Permissions', () => {
       // This simulates the scenario where a tournament_admin user
       // clicks "Edit" on a tournament they own
       
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'tour-admin-1', email: 'tour@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+      }));
+      prisma.user.findUnique.mockImplementation(async () => 
         createMockUser('tour-admin-1', 'tour@example.com', 'tournament_admin')
       );
-      vi.mocked(prisma.event.findUnique).mockResolvedValue(
+      prisma.event.findUnique.mockImplementation(async () => 
         createMockTournament(1, 'tour-admin-1')
       );
 
@@ -271,11 +271,11 @@ describe('Tournament Permissions', () => {
     test('club_admin should still be able to manage any tournament', async () => {
       // This ensures we didn't break the existing club_admin functionality
       
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'club-admin-1', email: 'club@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+      }));
+      prisma.user.findUnique.mockImplementation(async () => 
         createMockUser('club-admin-1', 'club@example.com', 'club_admin')
       );
 
@@ -286,11 +286,11 @@ describe('Tournament Permissions', () => {
     test('players should still be denied from managing tournaments', async () => {
       // This ensures we didn't accidentally grant players access
       
-      vi.mocked(getSession).mockResolvedValue({
+      getSession.mockImplementation(async () => ({
         user: { id: 'player-1', email: 'player@example.com' },
         session: { token: 'test', expiresAt: new Date() }
-      });
-      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+      }));
+      prisma.user.findUnique.mockImplementation(async () => 
         createMockUser('player-1', 'player@example.com', 'player')
       );