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/player-profile.test.ts

@@ -7,24 +7,24 @@
  * - Partnership performance
  */
 
-import { describe, test, expect, vi, beforeEach } from 'vitest';
+import { describe, test, expect, mock, beforeEach } from 'bun:test';
 import { prisma } from '@/lib/prisma';
 import type { Player, Event, Match, PartnershipStat } from '@prisma/client';
 
 // Mock the prisma module
-vi.mock('@/lib/prisma', () => ({
+mock.module('@/lib/prisma', () => ({
   prisma: {
     player: {
-      findUnique: vi.fn(),
+      findUnique: mock(() => {}),
     },
     event: {
-      findMany: vi.fn(),
+      findMany: mock(() => {}),
     },
     match: {
-      findMany: vi.fn(),
+      findMany: mock(() => {}),
     },
     partnershipStat: {
-      findMany: vi.fn(),
+      findMany: mock(() => {}),
     },
   },
 }));
@@ -111,7 +111,7 @@ const createMockPartnershipStat = (
 
 describe('Player Profile Enhancements', () => {
   beforeEach(() => {
-    vi.clearAllMocks();
+    mock.clearAllMocks();
   });
 
   describe('Tournaments Participated', () => {
@@ -122,8 +122,8 @@ describe('Player Profile Enhancements', () => {
         createMockTournament(2, 'Tournament B'),
       ];
 
-      vi.mocked(prisma.player.findUnique).mockResolvedValue(mockPlayer);
-      vi.mocked(prisma.event.findMany).mockResolvedValue(mockTournaments);
+      prisma.player.findUnique.mockImplementation(async () => mockPlayer);
+      prisma.event.findMany.mockImplementation(async () => mockTournaments);
 
       // Simulate the query that would be run
       const tournaments = await prisma.event.findMany({
@@ -145,8 +145,8 @@ describe('Player Profile Enhancements', () => {
     test('should return empty array if player has no tournaments', async () => {
       const mockPlayer = createMockPlayer(1, 'Test Player');
 
-      vi.mocked(prisma.player.findUnique).mockResolvedValue(mockPlayer);
-      vi.mocked(prisma.event.findMany).mockResolvedValue([]);
+      prisma.player.findUnique.mockImplementation(async () => mockPlayer);
+      prisma.event.findMany.mockImplementation(async () => []);
 
       const tournaments = await prisma.event.findMany({
         where: {
@@ -173,8 +173,8 @@ describe('Player Profile Enhancements', () => {
         createMockMatch(2, 1, 3, 5, 6, 4, 4),
       ];
 
-      vi.mocked(prisma.player.findUnique).mockResolvedValue(mockPlayer);
-      vi.mocked(prisma.match.findMany).mockResolvedValue(mockMatches);
+      prisma.player.findUnique.mockImplementation(async () => mockPlayer);
+      prisma.match.findMany.mockImplementation(async () => mockMatches);
 
       // Simulate the query that would be run
       const matches = await prisma.match.findMany({
@@ -204,8 +204,8 @@ describe('Player Profile Enhancements', () => {
     test('should return empty array if player has no matches', async () => {
       const mockPlayer = createMockPlayer(1, 'Test Player');
 
-      vi.mocked(prisma.player.findUnique).mockResolvedValue(mockPlayer);
-      vi.mocked(prisma.match.findMany).mockResolvedValue([]);
+      prisma.player.findUnique.mockImplementation(async () => mockPlayer);
+      prisma.match.findMany.mockImplementation(async () => []);
 
       const matches = await prisma.match.findMany({
         where: {
@@ -240,8 +240,8 @@ describe('Player Profile Enhancements', () => {
         createMockPartnershipStat(2, 1, 3, 5, 2, 3),
       ];
 
-      vi.mocked(prisma.player.findUnique).mockResolvedValue(mockPlayer);
-      vi.mocked(prisma.partnershipStat.findMany).mockResolvedValue(mockPartnershipStats);
+      prisma.player.findUnique.mockImplementation(async () => mockPlayer);
+      prisma.partnershipStat.findMany.mockImplementation(async () => mockPartnershipStats);
 
       // Simulate the query that would be run
       const partnershipStats = await prisma.partnershipStat.findMany({
@@ -265,8 +265,8 @@ describe('Player Profile Enhancements', () => {
     test('should return empty array if player has no partnership data', async () => {
       const mockPlayer = createMockPlayer(1, 'Test Player');
 
-      vi.mocked(prisma.player.findUnique).mockResolvedValue(mockPlayer);
-      vi.mocked(prisma.partnershipStat.findMany).mockResolvedValue([]);
+      prisma.player.findUnique.mockImplementation(async () => mockPlayer);
+      prisma.partnershipStat.findMany.mockImplementation(async () => []);
 
       const partnershipStats = await prisma.partnershipStat.findMany({
         where: {