- Assert GeneratePostContentRequest rejects a prompt over the shared max, so the
editor's limit is pinned explicitly (not only implied by the create wizard).
- Assert the create wizard accepts a prompt at exactly the minimum length,
complementing the below-minimum rejection.
- Replaced direct status checks in multiple controllers and actions with the PostStatusGuard utility, improving code readability and maintainability.
- Updated error messages to utilize a centralized method for consistency across the application.
- Removed the BrandImagePalette class, consolidating color resolution logic into the AiImageClient for better organization and type safety.
