- Introduced new tests to cover SnapTrade decryption and connection errors in `SnaptradeItemsControllerTest`.
- Updated error messages for improved user clarity.
- Modified `unlink` functionality to preserve `SnaptradeAccount` records while ensuring proper detachment of associated holdings.
* Add SnapTrade connection management with lazy-loading and deletion functionality.
* Refactor lazy-load controller to simplify event handling and enhance loading state management; improve SnapTrade deletion logic with additional safeguards and logging.
* Improve SnapTrade connection error handling and centralize unknown brokerage message using i18n.
* Centralize SnapTrade connection default name and missing authorization ID messages using i18n.
* Enhance SnapTrade connection deletion logic with improved error handling, i18n support for API deletion failures, and consistent Turbo Stream responses.
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Co-authored-by: luckyPipewrench <luckypipewrench@proton.me>
