Printful HTTP client (v2 + v1 for sync products), Provider behaviour
implementation with all callbacks (test_connection, fetch_products,
submit_order, get_order_status, fetch_shipping_rates), and multi-provider
order routing that looks up the provider connection from the order's
product instead of hardcoding "printify".
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add /admin/providers LiveView for connecting and managing POD providers
- Implement pagination for Printify API (handles all products, not just first page)
- Add parallel processing (5 concurrent) for faster product sync
- Add slug-based fallback matching when provider_product_id changes
- Add error recovery with try/rescue to prevent stuck sync status
- Add checksum-based change detection to skip unchanged products
- Add upsert tests covering race conditions and slug matching
- Add Printify provider tests
- Document Printify integration research (product identity, order risks,
open source vs managed hosting implications)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
