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-update.test.ts

@@ -3,23 +3,23 @@
  * Tests the allowTies field is properly saved when updating tournaments
  */
 
-import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { describe, it, expect, mock, beforeEach } from 'bun:test';
 import { prisma } from '@/lib/prisma';
 
 // Mock the prisma client
-vi.mock('@/lib/prisma', () => ({
+mock.module('@/lib/prisma', () => ({
   prisma: {
     event: {
-      findUnique: vi.fn(),
-      update: vi.fn(),
+      findUnique: mock(() => {}),
+      update: mock(() => {}),
     },
   },
 }));
 
 // Mock the permissions module
-vi.mock('@/lib/permissions', () => ({
-  canManageTournament: vi.fn().mockResolvedValue({ allowed: true }),
-  canDeleteTournament: vi.fn().mockResolvedValue({ allowed: true }),
+mock.module('@/lib/permissions', () => ({
+  canManageTournament: mock(() => {}).mockResolvedValue({ allowed: true }),
+  canDeleteTournament: mock(() => {}).mockResolvedValue({ allowed: true }),
 }));
 
 // Import the route handler after mocking
@@ -27,12 +27,12 @@ import { PUT } from '@/app/api/tournaments/[id]/route';
 
 describe('Tournament Update API', () => {
   beforeEach(() => {
-    vi.clearAllMocks();
+    mock.clearAllMocks();
   });
 
   it('should update allowTies field when provided', async () => {
     // Mock existing tournament
-    vi.mocked(prisma.event.findUnique).mockResolvedValue({
+    prisma.event.findUnique.mockImplementation(async () => ({
       id: 1,
       name: 'Test Tournament',
       allowTies: false,
@@ -46,10 +46,10 @@ describe('Tournament Update API', () => {
       ownerId: null,
       createdAt: new Date(),
       updatedAt: new Date(),
-    } as any);
+      } as any));
 
     // Mock successful update
-    vi.mocked(prisma.event.update).mockResolvedValue({
+    prisma.event.update.mockImplementation(async () => ({
       id: 1,
       name: 'Test Tournament',
       allowTies: true,
@@ -63,7 +63,7 @@ describe('Tournament Update API', () => {
       ownerId: null,
       createdAt: new Date(),
       updatedAt: new Date(),
-    } as any);
+      } as any));
 
     const request = new Request('http://localhost/api/tournaments/1', {
       method: 'PUT',
@@ -78,7 +78,7 @@ describe('Tournament Update API', () => {
     const response = await PUT(request, { params });
 
     expect(response.status).toBe(200);
-    expect(vi.mocked(prisma.event.update)).toHaveBeenCalledWith(
+    expect(prisma.event.update).toHaveBeenCalledWith(
       expect.objectContaining({
         data: expect.objectContaining({
           allowTies: true,
@@ -89,7 +89,7 @@ describe('Tournament Update API', () => {
 
   it('should default allowTies to false when not provided', async () => {
     // Mock existing tournament
-    vi.mocked(prisma.event.findUnique).mockResolvedValue({
+    prisma.event.findUnique.mockImplementation(async () => ({
       id: 1,
       name: 'Test Tournament',
       allowTies: true,
@@ -103,10 +103,10 @@ describe('Tournament Update API', () => {
       ownerId: null,
       createdAt: new Date(),
       updatedAt: new Date(),
-    } as any);
+      } as any));
 
     // Mock successful update
-    vi.mocked(prisma.event.update).mockResolvedValue({
+    prisma.event.update.mockImplementation(async () => ({
       id: 1,
       name: 'Test Tournament',
       allowTies: false,
@@ -120,7 +120,7 @@ describe('Tournament Update API', () => {
       ownerId: null,
       createdAt: new Date(),
       updatedAt: new Date(),
-    } as any);
+      } as any));
 
     const request = new Request('http://localhost/api/tournaments/1', {
       method: 'PUT',
@@ -135,7 +135,7 @@ describe('Tournament Update API', () => {
     const response = await PUT(request, { params });
 
     expect(response.status).toBe(200);
-    expect(vi.mocked(prisma.event.update)).toHaveBeenCalledWith(
+    expect(prisma.event.update).toHaveBeenCalledWith(
       expect.objectContaining({
         data: expect.objectContaining({
           allowTies: false, // Should default to false
@@ -146,7 +146,7 @@ describe('Tournament Update API', () => {
 
   it('should preserve allowTies value when updating other fields', async () => {
     // Mock existing tournament with allowTies = true
-    vi.mocked(prisma.event.findUnique).mockResolvedValue({
+    prisma.event.findUnique.mockImplementation(async () => ({
       id: 1,
       name: 'Test Tournament',
       allowTies: true,
@@ -160,10 +160,10 @@ describe('Tournament Update API', () => {
       ownerId: null,
       createdAt: new Date(),
       updatedAt: new Date(),
-    } as any);
+      } as any));
 
     // Mock successful update
-    vi.mocked(prisma.event.update).mockResolvedValue({
+    prisma.event.update.mockImplementation(async () => ({
       id: 1,
       name: 'Updated Tournament Name',
       allowTies: true,
@@ -177,7 +177,7 @@ describe('Tournament Update API', () => {
       ownerId: null,
       createdAt: new Date(),
       updatedAt: new Date(),
-    } as any);
+      } as any));
 
     const request = new Request('http://localhost/api/tournaments/1', {
       method: 'PUT',
@@ -192,7 +192,7 @@ describe('Tournament Update API', () => {
     const response = await PUT(request, { params });
 
     expect(response.status).toBe(200);
-    const updateCall = vi.mocked(prisma.event.update).mock.calls[0][0];
+    const updateCall = prisma.event.update.mock.calls[0][0];
     expect(updateCall.data.allowTies).toBe(true);
     expect(updateCall.data.name).toBe('Updated Tournament Name');
     expect(updateCall.data.targetScore).toBe(10);