refactor: minor code quality improvements

Changes:
- Fixed misleading SQL comment in search_providers permissions
  (Document schema -> Search Providers schema)
- Removed unused AuthRaceConditionSkipReason constant from ServiceCatalogsModuleIntegrationTests
- Cleaned up comment structure in ApiVersioningTests for better readability

All changes improve code clarity and remove dead code.

Refs: Code review feedback on minor quality issues

infrastructure/database/modules/search_providers/01-permissions.sql

@@ -43,5 +43,5 @@ GRANT SELECT ON ALL TABLES IN SCHEMA providers TO search_role;
 GRANT SELECT ON TABLE public.spatial_ref_sys TO search_role;
 GRANT SELECT ON TABLE public.spatial_ref_sys TO meajudaai_app_role;
 
--- Document schema purpose
+-- Search Providers schema purpose
 COMMENT ON SCHEMA search_providers IS 'Search & Discovery module - Geospatial provider search with PostGIS';

tests/MeAjudaAi.E2E.Tests/Integration/ApiVersioningTests.cs

@@ -44,8 +44,10 @@ await ApiClient.GetAsync("/api/v2/users") // Versão não suportada - deve ser 4
     [Fact]
     public async Task ApiVersioning_ShouldWork_ForDifferentModules()
     {
-        // Arrange
-        AuthenticateAsAdmin(); // Ensure authenticated for API access & Act - Testa se o versionamento funciona para qualquer padrão de módulo
+        // Arrange - Configure authentication for API access
+        AuthenticateAsAdmin();
+
+        // Act - Test that versioning works for different module patterns
         var responses = new[]
         {
             await ApiClient.GetAsync("/api/v1/users"),

tests/MeAjudaAi.E2E.Tests/Integration/ServiceCatalogsModuleIntegrationTests.cs

@@ -10,11 +10,6 @@ namespace MeAjudaAi.E2E.Tests.Integration;
 /// </summary>
 public class ServiceCatalogsModuleIntegrationTests : TestContainerTestBase
 {
-    // TODO: Link to GitHub issue #<TBD> tracking E2E authentication infrastructure refactor.
-    // 14+ E2E tests affected by ConfigurableTestAuthenticationHandler race condition.
-    private const string AuthRaceConditionSkipReason =
-        "AUTH: Returns 403 instead of expected success due to ConfigurableTestAuthenticationHandler race condition. See GitHub issue #<TBD>.";
-
     [Fact]
     public async Task ServicesModule_Can_Validate_Services_From_Catalogs()
     {