Inventory & Barcode Prototype

Personal application prototype with Flutter account/stock interfaces and an ASP.NET Core backend. The client contains master-record lookup, barcode-related interactions, user-management screens, password recovery, and spreadsheet helpers. Backend source contains account and inventory/master-record experiments, including older commented implementations. Scope: Development prototype; do not infer that all historical endpoints, scanning devices, exports, or recovery flows are complete or validated.