- Updated `getProductInfo` method to return processed product information using `buildEffectiveProductInfo`.
- Introduced new private methods for building effective product info, resolving software account levels, and checking special TikTok account status.
- Refactored platform string handling with `appendPlatform` method to ensure unique and sorted platform entries.
- Updated platform name mappings in `PlatformService` for consistency with new naming conventions.
- Introduced `getPlatformAccountsByUserId` method in `DyVideoUser` model to fetch active platform accounts for a specified user.
- Added new API route for accessing platform accounts under `v1/platform/accounts`, requiring user authentication.