fix: add site_admin support to tournament permissions and fix session cache issues

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

@@ -5,7 +5,7 @@
  * Regression tests for the issue where tournament_admin users were redirected to login
  */
 
-import { describe, test, expect, vi } from 'vitest';
+import { describe, test, expect, vi, beforeEach } from 'vitest';
 import { canManageTournament, ownsTournament, hasRole, getManageableTournaments } from '@/lib/permissions';
 import { getSession } from '@/lib/auth-simple';
 import { prisma } from '@/lib/prisma';
@@ -44,6 +44,7 @@ const createMockUser = (id: string, email: string, role: string): User => ({
 // Helper to create mock tournament
 const createMockTournament = (id: number, ownerId: string | null): Event => ({
   id,
+  event_id: null,
   name: 'Test Tournament',
   description: null,
   eventDate: new Date(),
@@ -163,9 +164,12 @@ describe('Tournament Permissions', () => {
   describe('getManageableTournaments', () => {
     test('should return all tournaments for club_admin', async () => {
       vi.mocked(getSession).mockResolvedValue({
-        user: { id: 'admin-1', email: 'admin@example.com', role: 'club_admin' },
+        user: { id: 'admin-1', email: 'admin@example.com' },
         session: { token: 'test', expiresAt: new Date() }
       });
+      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+        createMockUser('admin-1', 'admin@example.com', 'club_admin')
+      );
       
       const mockTournaments = [
         createMockTournament(1, 'user-1'),
@@ -185,9 +189,12 @@ describe('Tournament Permissions', () => {
 
     test('should return only owned tournaments for tournament_admin', async () => {
       vi.mocked(getSession).mockResolvedValue({
-        user: { id: 'tour-admin-1', email: 'tour@example.com', role: 'tournament_admin' },
+        user: { id: 'tour-admin-1', email: 'tour@example.com' },
         session: { token: 'test', expiresAt: new Date() }
       });
+      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+        createMockUser('tour-admin-1', 'tour@example.com', 'tournament_admin')
+      );
       
       const mockTournaments = [
         createMockTournament(1, 'tour-admin-1'),
@@ -209,9 +216,12 @@ describe('Tournament Permissions', () => {
 
     test('should return only non-draft tournaments for players', async () => {
       vi.mocked(getSession).mockResolvedValue({
-        user: { id: 'player-1', email: 'player@example.com', role: 'player' },
+        user: { id: 'player-1', email: 'player@example.com' },
         session: { token: 'test', expiresAt: new Date() }
       });
+      vi.mocked(prisma.user.findUnique).mockResolvedValue(
+        createMockUser('player-1', 'player@example.com', 'player')
+      );
       
       const mockTournaments = [
         createMockTournament(1, 'user-1'),