Delta Specification

Delta spec.md format

# Warehouse Module - Delta Specification

## ADDED Requirements

### Requirement: Barcode scanning during receipt
The system MUST allow barcode scanning via mobile device
for quick product identification during receiving.

#### Scenario: Successful EAN scan
- **WHEN** the user scans barcode "8590000001234"
- **THEN** the system automatically finds the product by EAN
- **AND** fills the product on the receipt line
- **AND** moves the cursor to the quantity field

#### Scenario: Unknown barcode
- **WHEN** the user scans a barcode that is not in the system
- **THEN** the system shows message "Product not found"
- **AND** offers the option "Create new product"
- **AND** pre-fills the EAN code of the new product

#### Scenario: Offline scanning
- **GIVEN** the device is offline
- **WHEN** the user scans a barcode
- **THEN** the system saves the scan to a local queue
- **AND** shows indicator "Waiting for sync"
- **WHEN** the device reconnects
- **THEN** the system automatically synchronizes the queue

### Requirement: Scan audit log
The system MUST log all scans for audit purposes.

#### Scenario: Record successful scan
- **WHEN** the user successfully scans a product
- **THEN** the system records: timestamp, userId, ean, productId, receiptId

## MODIFIED Requirements

### Requirement: Create receipt item
The system MUST allow adding a receipt item **manually or by scanning**.

#### Scenario: Manual item addition
- **WHEN** the user clicks "Add item"
- **THEN** a form opens for product selection
- **AND** the user can search by name or code

#### Scenario: Add item by scanning
- **WHEN** the user clicks "Scan"
- **THEN** the camera opens
- **AND** after scanning the item is added automatically

## REMOVED Requirements

(No requirements are removed in this change)

## RENAMED Requirements

(No requirements are renamed in this change)

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Delta operations

Operation	Description	Content
ADDED	New requirements	Full text with scenarios
MODIFIED	Changed requirements	Full new text
REMOVED	Removed requirements	Name only
RENAMED	Renamed requirements	FROM and TO

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Delta specification checklist

• [ ] Delta specs include all scenarios
• [ ] ADDED/MODIFIED contain SHALL/MUST
• [ ] ADDED/MODIFIED have ≥1 scenario
• [ ] REMOVED contains names only (no content)
• [ ] RENAMED has FROM and TO
• [ ] Validation passes without errors

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