Improves JSON deserialization for product and stock picking models by
using custom `fromJson` methods and explicit `JsonKey` mappings.
This ensures robust parsing of fields like barcode, display name, and product IDs.
Adds a new `ecart` getter to calculate the difference between requested
and received quantities for stock moves.
Updates the reception details page to display a list of products
with their requested, received, and calculated difference quantities.
Removes redundant JSON-RPC fields from the `stock.picking/web_read` API call.
Refactors the product data model to primarily store `id`, `barcode`, and `displayName`. This simplifies the product structure, focusing on essential attributes for inventory and scanning operations.
Optimizes API calls for stock picking to fetch more relevant product details. Unnecessary fields are removed, and specific product attributes like `barcode` and `quantity` are now explicitly requested for stock moves.
Moves `StockPickingRecordModel` to its own dedicated file for improved code organization and maintainability. Updates all affected UI components and scanner logic to align with the revised product model.
Renames `AuthStruct` to `AuthModel` and `ProductStruct` to `ProductModel` to align with a consistent data model naming convention.
Updates all relevant imports, type declarations, and method signatures across the application to reflect these changes, improving codebase clarity and maintainability.
Includes minor code style improvements and refactorings in other components.
