Adds complete audit trail for all stock movements:
- InventoryTransaction model with transaction types (reserve, fulfill,
release, adjust, set, import, return)
- Alembic migration for inventory_transactions table
- Transaction logging in order_inventory_service for all order operations
- Captures quantity snapshots, order references, and timestamps
Each inventory operation now creates a transaction record for
accountability and debugging.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Implements order-inventory integration that automatically manages stock
when order status changes:
- processing: reserves inventory for order items
- shipped: fulfills (deducts) from stock
- cancelled: releases reserved inventory
Creates OrderInventoryService to orchestrate operations between
OrderService and InventoryService. Placeholder products (unmatched
Letzshop items) are skipped. Inventory errors are logged but don't
block order status updates.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
