chore(tests): reorganize feature suites and expand team auth coverage

tests/Feature/Team/TeamInvitationEmailNormalizationTest.php

@@ -0,0 +1,55 @@
+<?php
+
+use App\Models\Team;
+use App\Models\TeamInvitation;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+uses(RefreshDatabase::class);
+
+test('team invitation normalizes email to lowercase', function () {
+    // Create a team
+    $team = Team::factory()->create();
+
+    // Create invitation with mixed case email
+    $invitation = TeamInvitation::create([
+        'team_id' => $team->id,
+        'uuid' => 'test-uuid-123',
+        'email' => 'Test@Example.com', // Mixed case
+        'role' => 'member',
+        'link' => 'https://example.com/invite/test-uuid-123',
+        'via' => 'link',
+    ]);
+
+    // Verify email was normalized to lowercase
+    expect($invitation->email)->toBe('test@example.com');
+});
+
+test('team invitation works with existing user email', function () {
+    // Create a team
+    $team = Team::factory()->create();
+
+    // Create a user with lowercase email
+    $user = User::factory()->create([
+        'email' => 'test@example.com',
+        'name' => 'Test User',
+    ]);
+
+    // Create invitation with mixed case email
+    $invitation = TeamInvitation::create([
+        'team_id' => $team->id,
+        'uuid' => 'test-uuid-123',
+        'email' => 'Test@Example.com', // Mixed case
+        'role' => 'member',
+        'link' => 'https://example.com/invite/test-uuid-123',
+        'via' => 'link',
+    ]);
+
+    // Verify the invitation email matches the user email (both normalized)
+    expect($invitation->email)->toBe($user->email);
+
+    // Verify user lookup works
+    $foundUser = User::whereEmail($invitation->email)->first();
+    expect($foundUser)->not->toBeNull();
+    expect($foundUser->id)->toBe($user->id);
+});