fix(tests): resolve password validation, csv upload, and admin auth issues

- Set explicit min/max password length in Better Auth config (8-128 chars)
- Fix CSV upload tests to use multipart/form-data instead of data
- Add @chromium-admin annotations to tests requiring admin access

e2e/tournament-edit-allowTies.test.ts

@@ -41,7 +41,7 @@ test.describe('Tournament Edit - allowTies functionality', () => {
     }
   });
 
-  test('should display allowTies checkbox on edit form', async ({ page }) => {
+  test('should display allowTies checkbox on edit form @chromium-admin', async ({ page }) => {
     // Navigate to tournament edit page
     await page.goto(`/admin/tournaments/${tournamentId}/edit`);
 
@@ -54,7 +54,7 @@ test.describe('Tournament Edit - allowTies functionality', () => {
     await expect(allowTiesCheckbox).not.toBeChecked();
   });
 
-  test('should save allowTies when toggled to true', async ({ page }) => {
+  test('should save allowTies when toggled to true @chromium-admin', async ({ page }) => {
     // Navigate to tournament edit page
     await page.goto(`/admin/tournaments/${tournamentId}/edit`);
 
@@ -80,7 +80,7 @@ test.describe('Tournament Edit - allowTies functionality', () => {
     expect(updatedTournament?.allowTies).toBe(true);
   });
 
-  test('should save allowTies when toggled to false', async ({ page }) => {
+  test('should save allowTies when toggled to false @chromium-admin', async ({ page }) => {
     // First, set allowTies to true
     await prisma.event.update({
       where: { id: tournamentId },