add CategoryRepository tests

[magicxor]

No description provided.

[Copilot]

Pull request overview

This PR adds comprehensive integration test coverage for the CategoryRepository, including tests for all CRUD operations and category moderator management. The changes also introduce a reusable utility for setting up user context in tests and refactor existing tests to eliminate code duplication.

Key changes:

• Added 6 new test files covering CategoryRepository operations (Create, Edit, Get, List, SetDeleted, SetModerators)
• Introduced UserContextUtils to reduce code duplication across test files
• Extended TestDataBuilder with moderator management capabilities

Reviewed changes

Copilot reviewed 16 out of 17 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
Hikkaba.Tests.Integration/Utils/UserContextUtils.cs	New utility class for setting up user context in tests, eliminating duplicated setup code
Hikkaba.Tests.Integration/Tests/Repositories/Category/SetCategoryModeratorsTests.cs	Tests for assigning and managing category moderators
Hikkaba.Tests.Integration/Tests/Repositories/Category/SetCategoryDeletedTests.cs	Tests for soft-deleting and restoring categories
Hikkaba.Tests.Integration/Tests/Repositories/Category/ListCategoriesTests.cs	Tests for listing categories with filtering and ordering
Hikkaba.Tests.Integration/Tests/Repositories/Category/GetCategoryTests.cs	Tests for retrieving individual categories
Hikkaba.Tests.Integration/Tests/Repositories/Category/EditCategoryTests.cs	Tests for updating category properties
Hikkaba.Tests.Integration/Tests/Repositories/Category/CreateCategoryTests.cs	Tests for creating new categories
Hikkaba.Tests.Integration/Tests/Repositories/Post/SetPostDeletedTests.cs	Refactored to use UserContextUtils
Hikkaba.Tests.Integration/Tests/Repositories/Ban/SetBanDeletedTests.cs	Refactored to use UserContextUtils and simplified using statements
Hikkaba.Tests.Integration/Tests/Repositories/Ban/CreateBanTests.cs	Refactored to use UserContextUtils
Hikkaba.Tests.Integration/Tests/Repositories/Ban/GetBanTests.cs	Simplified using statements
Hikkaba.Tests.Integration/Tests/Repositories/Thread/ListThreadPreviewsTests.cs	Minor formatting improvements for consistency
Hikkaba.Tests.Integration/Tests/Repositories/Thread/GetThreadDetailsTests.cs	Simplified using statements for better readability
Hikkaba.Tests.Integration/Builders/TestDataBuilder.Moderator.cs	New builder methods for creating moderators and assigning them to categories
Hikkaba.Tests.Integration/Builders/TestDataBuilder.Post.cs	Minor formatting improvements for better alignment
Hikkaba.sln.DotSettings	Added comprehensive code cleanup profile configuration
.editorconfig	Added ReSharper highlighting configuration for redundant if-else blocks

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