chore: add shared components and update docs

- Add vendor selector component for admin pages
- Add input macros for form handling
- Add truck icon for shipping UI
- Update vendor operations expansion plan
- Update mkdocs configuration
- Update dependencies

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/development/migration/vendor-operations-expansion.md

@@ -19,8 +19,8 @@ The admin sidebar has a "Vendor Operations" section (formerly "Product Catalog")
 | Marketplace Products | ✅ Complete | View/manage products from marketplace imports |
 | Vendor Products | ✅ Complete | View/manage vendor-specific products |
 | Customers | ✅ Complete | Customer management (moved from Platform Admin) |
-| Inventory | 🔲 Planned | Stock levels, adjustments, low-stock alerts |
-| Orders | 🔲 Planned | Order management, status updates, fulfillment |
+| Inventory | ✅ Complete | Admin API + UI with stock adjustments |
+| Orders | ✅ Complete | Order management, status updates, fulfillment |
 | Shipping | 🔲 Planned | Tracking, carriers, shipping rules |
 
 ---
@@ -249,21 +249,21 @@ CREATE TABLE shipping_rules (
 - [x] Update Alpine.js configuration
 - [x] Create migration plan documentation
 
-### Phase 2: Inventory
-- [ ] Database migrations
-- [ ] Create `InventoryService`
-- [ ] API endpoints
-- [ ] Admin inventory page
-- [ ] Stock adjustment modal
-- [ ] Low stock alerts
+### Phase 2: Inventory ✅
+- [x] Database migrations (inventory table exists)
+- [x] Create `InventoryService`
+- [x] API endpoints
+- [x] Admin inventory page
+- [x] Stock adjustment modal
+- [x] Low stock alerts (via filtering)
 
-### Phase 3: Orders
-- [ ] Database migrations
-- [ ] Create `AdminOrderService`
-- [ ] API endpoints
-- [ ] Admin orders page
-- [ ] Order detail view
-- [ ] Status update functionality
+### Phase 3: Orders ✅
+- [x] Database migrations (orders table exists)
+- [x] Add admin methods to `OrderService`
+- [x] API endpoints
+- [x] Admin orders page
+- [x] Order detail view
+- [x] Status update functionality
 
 ### Phase 4: Shipping
 - [ ] Database migrations