refactor: migrate schemas to canonical module locations

Migrate remaining legacy schemas to their respective modules:

Marketplace module (app/modules/marketplace/schemas/):
- letzshop.py: Letzshop credentials, orders, fulfillment, sync
- onboarding.py: Vendor onboarding wizard schemas

Catalog module (app/modules/catalog/schemas/):
- product.py: ProductCreate, ProductUpdate, ProductResponse

Payments module (app/modules/payments/schemas/):
- payment.py: PaymentConfig, Stripe, transactions, balance

Delete legacy files:
- models/schema/letzshop.py
- models/schema/onboarding.py
- models/schema/product.py
- models/schema/payment.py
- models/schema/marketplace_product.py (re-export)
- models/schema/marketplace_import_job.py (re-export)
- models/schema/search.py (empty)

Update imports across 19 files to use canonical locations.

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

tests/unit/models/schema/test_marketplace_import_job.py

@@ -4,7 +4,7 @@
 import pytest
 from pydantic import ValidationError
 
-from models.schema.marketplace_import_job import (
+from app.modules.marketplace.schemas import (
     MarketplaceImportJobListResponse,
     MarketplaceImportJobRequest,
     MarketplaceImportJobResponse,

tests/unit/models/schema/test_product.py

@@ -4,7 +4,7 @@
 import pytest
 from pydantic import ValidationError
 
-from models.schema.product import (
+from app.modules.catalog.schemas import (
     ProductCreate,
     ProductListResponse,
     ProductResponse,

tests/unit/services/test_marketplace_product_service.py

@@ -30,7 +30,7 @@ from app.modules.marketplace.models import (
     MarketplaceProduct,
     MarketplaceProductTranslation,
 )
-from models.schema.marketplace_product import (
+from app.modules.marketplace.schemas import (
     MarketplaceProductCreate,
     MarketplaceProductUpdate,
 )

tests/unit/services/test_marketplace_service.py

@@ -13,7 +13,7 @@ from app.exceptions.marketplace_import_job import (
 from app.exceptions.vendor import UnauthorizedVendorAccessException
 from app.services.marketplace_import_job_service import MarketplaceImportJobService
 from app.modules.marketplace.models import MarketplaceImportJob
-from models.schema.marketplace_import_job import MarketplaceImportJobRequest
+from app.modules.marketplace.schemas import MarketplaceImportJobRequest
 
 
 @pytest.mark.unit

tests/unit/services/test_product_service.py

@@ -8,7 +8,7 @@ from app.exceptions import (
     MarketplaceProductValidationException,
 )
 from app.services.marketplace_product_service import MarketplaceProductService
-from models.schema.marketplace_product import (
+from app.modules.marketplace.schemas import (
     MarketplaceProductCreate,
     MarketplaceProductUpdate,
 )

tests/unit/services/test_vendor_service.py

@@ -17,7 +17,7 @@ from app.exceptions import (
 from app.services.vendor_service import VendorService
 from models.database.company import Company
 from models.database.vendor import Vendor
-from models.schema.product import ProductCreate
+from app.modules.catalog.schemas import ProductCreate
 from models.schema.vendor import VendorCreate