refactor(migrations): squash 75 migrations into 12 per-module initial migrations

The old migration chain was broken (downgrade path through vendor->merchant
rename made rollbacks impossible). This squashes everything into fresh
per-module migrations with zero schema drift, verified by autogenerate.

Changes:
- Replace 75 accumulated migrations with 12 per-module initial migrations
  (core, billing, catalog, marketplace, cms, customers, orders, inventory,
  cart, messaging, loyalty, dev_tools) in a linear chain
- Fix make db-reset to use SQL DROP SCHEMA instead of alembic downgrade base
- Enable migration autodiscovery for all modules (migrations_path in definitions)
- Rewrite alembic/env.py to import all 75 model tables across 13 modules
- Fix AdminNotification import (was incorrectly from tenancy, now from messaging)
- Update squash_migrations.py to handle all module migration directories

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

alembic/env.py

@@ -29,170 +29,251 @@ from models.database.base import Base
 # ============================================================================
 # CRITICAL: Every model must be imported here so Alembic can detect tables!
 # If a model is not imported, Alembic will not create/update its table.
-#
-# Models list must match: models/database/__init__.py
 # ============================================================================
 
 print("[ALEMBIC] Importing database models...")
 print("=" * 70)
 
+_import_errors = []
+
 # ----------------------------------------------------------------------------
-# ADMIN MODELS
+# CORE MODULE (1 model)
 # ----------------------------------------------------------------------------
 try:
-    from app.modules.tenancy.models import (
+    from app.modules.core.models import AdminMenuConfig  # noqa: F401
+
+    print("  ✓ Core models (1)")
+except ImportError as e:
+    _import_errors.append(f"core: {e}")
+    print(f"  ✗ Core models failed: {e}")
+
+# ----------------------------------------------------------------------------
+# TENANCY MODULE (15 models)
+# ----------------------------------------------------------------------------
+try:
+    from app.modules.tenancy.models import (  # noqa: F401
         AdminAuditLog,
-        AdminNotification,
+        AdminPlatform,
         AdminSession,
         AdminSetting,
+        ApplicationLog,
+        Merchant,
+        Platform,
         PlatformAlert,
+        PlatformModule,
+        Role,
+        Store,
+        StoreDomain,
+        StorePlatform,
+        StoreUser,
+        User,
     )
 
-    print("  ✓ Admin models imported (5 models)")
-    print("    - AdminAuditLog")
-    print("    - AdminNotification")
-    print("    - AdminSetting")
-    print("    - PlatformAlert")
-    print("    - AdminSession")
+    print("  ✓ Tenancy models (15)")
 except ImportError as e:
-    print(f"  ✗ Admin models failed: {e}")
+    _import_errors.append(f"tenancy: {e}")
+    print(f"  ✗ Tenancy models failed: {e}")
 
 # ----------------------------------------------------------------------------
-# USER MODEL
+# BILLING MODULE (9 models)
 # ----------------------------------------------------------------------------
 try:
-    from app.modules.tenancy.models import User
+    from app.modules.billing.models import (  # noqa: F401
+        AddOnProduct,
+        BillingHistory,
+        CapacitySnapshot,
+        MerchantFeatureOverride,
+        MerchantSubscription,
+        StoreAddOn,
+        StripeWebhookEvent,
+        SubscriptionTier,
+        TierFeatureLimit,
+    )
 
-    print("  ✓ User model imported")
+    print("  ✓ Billing models (9)")
 except ImportError as e:
-    print(f"  ✗ User model failed: {e}")
+    _import_errors.append(f"billing: {e}")
+    print(f"  ✗ Billing models failed: {e}")
 
 # ----------------------------------------------------------------------------
-# STORE MODELS
+# CATALOG MODULE (3 models)
 # ----------------------------------------------------------------------------
 try:
-    from app.modules.tenancy.models import Role, Store, StoreUser
+    from app.modules.catalog.models import (  # noqa: F401
+        Product,
+        ProductMedia,
+        ProductTranslation,
+    )
 
-    print("  ✓ Store models imported (3 models)")
-    print("    - Store")
-    print("    - StoreUser")
-    print("    - Role")
+    print("  ✓ Catalog models (3)")
 except ImportError as e:
-    print(f"  ✗ Store models failed: {e}")
-
-try:
-    from app.modules.tenancy.models import StoreDomain
-
-    print("  ✓ StoreDomain model imported")
-except ImportError as e:
-    print(f"  ✗ StoreDomain model failed: {e}")
-
-try:
-    from app.modules.cms.models import StoreTheme
-
-    print("  ✓ StoreTheme model imported")
-except ImportError as e:
-    print(f"  ✗ StoreTheme model failed: {e}")
+    _import_errors.append(f"catalog: {e}")
+    print(f"  ✗ Catalog models failed: {e}")
 
 # ----------------------------------------------------------------------------
-# CONTENT PAGE MODEL (CMS Module)
+# MARKETPLACE MODULE (10 models)
 # ----------------------------------------------------------------------------
 try:
-    from app.modules.cms.models import ContentPage
+    from app.modules.marketplace.models import (  # noqa: F401
+        LetzshopFulfillmentQueue,
+        LetzshopHistoricalImportJob,
+        LetzshopStoreCache,
+        LetzshopSyncLog,
+        MarketplaceImportError,
+        MarketplaceImportJob,
+        MarketplaceProduct,
+        MarketplaceProductTranslation,
+        StoreLetzshopCredentials,
+        StoreOnboarding,
+    )
 
-    print("  ✓ ContentPage model imported (from CMS module)")
+    print("  ✓ Marketplace models (10)")
 except ImportError as e:
-    print(f"  ✗ ContentPage model failed: {e}")
+    _import_errors.append(f"marketplace: {e}")
+    print(f"  ✗ Marketplace models failed: {e}")
 
 # ----------------------------------------------------------------------------
-# PRODUCT MODELS
+# CMS MODULE (3 models)
 # ----------------------------------------------------------------------------
 try:
-    from app.modules.catalog.models import Product
+    from app.modules.cms.models import (  # noqa: F401
+        ContentPage,
+        MediaFile,
+        StoreTheme,
+    )
 
-    print("  ✓ Product model imported")
+    print("  ✓ CMS models (3)")
 except ImportError as e:
-    print(f"  ✗ Product model failed: {e}")
-
-try:
-    from app.modules.marketplace.models import MarketplaceProduct
-
-    print("  ✓ MarketplaceProduct model imported")
-except ImportError as e:
-    print(f"  ✗ MarketplaceProduct model failed: {e}")
+    _import_errors.append(f"cms: {e}")
+    print(f"  ✗ CMS models failed: {e}")
 
 # ----------------------------------------------------------------------------
-# INVENTORY MODEL
+# CUSTOMERS MODULE (3 models)
 # ----------------------------------------------------------------------------
 try:
-    from app.modules.inventory.models import Inventory
+    from app.modules.customers.models import (  # noqa: F401
+        Customer,
+        CustomerAddress,
+        PasswordResetToken,
+    )
 
-    print("  ✓ Inventory model imported")
+    print("  ✓ Customers models (3)")
 except ImportError as e:
-    print(f"  ✗ Inventory model failed: {e}")
+    _import_errors.append(f"customers: {e}")
+    print(f"  ✗ Customers models failed: {e}")
 
 # ----------------------------------------------------------------------------
-# MARKETPLACE IMPORT
+# ORDERS MODULE (5 models)
 # ----------------------------------------------------------------------------
 try:
-    from app.modules.marketplace.models import MarketplaceImportJob
+    from app.modules.orders.models import (  # noqa: F401
+        Invoice,
+        Order,
+        OrderItem,
+        OrderItemException,
+        StoreInvoiceSettings,
+    )
 
-    print("  ✓ MarketplaceImportJob model imported")
+    print("  ✓ Orders models (5)")
 except ImportError as e:
-    print(f"  ✗ MarketplaceImportJob model failed: {e}")
+    _import_errors.append(f"orders: {e}")
+    print(f"  ✗ Orders models failed: {e}")
 
 # ----------------------------------------------------------------------------
-# CUSTOMER MODELS
+# INVENTORY MODULE (2 models)
 # ----------------------------------------------------------------------------
 try:
-    from app.modules.customers.models.customer import Customer, CustomerAddress
+    from app.modules.inventory.models import (  # noqa: F401
+        Inventory,
+        InventoryTransaction,
+    )
 
-    print("  ✓ Customer models imported (2 models)")
-    print("    - Customer")
-    print("    - CustomerAddress")
+    print("  ✓ Inventory models (2)")
 except ImportError as e:
-    print(f"  ✗ Customer models failed: {e}")
+    _import_errors.append(f"inventory: {e}")
+    print(f"  ✗ Inventory models failed: {e}")
 
 # ----------------------------------------------------------------------------
-# CART MODELS
+# CART MODULE (1 model)
 # ----------------------------------------------------------------------------
 try:
-    from app.modules.cart.models import CartItem
+    from app.modules.cart.models import CartItem  # noqa: F401
 
-    print("  ✓ Cart models imported (1 model)")
-    print("    - CartItem")
+    print("  ✓ Cart models (1)")
 except ImportError as e:
+    _import_errors.append(f"cart: {e}")
     print(f"  ✗ Cart models failed: {e}")
 
 # ----------------------------------------------------------------------------
-# ORDER MODELS
+# MESSAGING MODULE (9 models)
 # ----------------------------------------------------------------------------
 try:
-    from app.modules.orders.models import Order, OrderItem
+    from app.modules.messaging.models import (  # noqa: F401
+        AdminNotification,
+        Conversation,
+        ConversationParticipant,
+        EmailLog,
+        EmailTemplate,
+        Message,
+        MessageAttachment,
+        StoreEmailSettings,
+        StoreEmailTemplate,
+    )
 
-    print("  ✓ Order models imported (2 models)")
-    print("    - Order")
-    print("    - OrderItem")
+    print("  ✓ Messaging models (9)")
 except ImportError as e:
-    print(f"  ✗ Order models failed: {e}")
+    _import_errors.append(f"messaging: {e}")
+    print(f"  ✗ Messaging models failed: {e}")
+
+# ----------------------------------------------------------------------------
+# LOYALTY MODULE (6 models)
+# ----------------------------------------------------------------------------
+try:
+    from app.modules.loyalty.models import (  # noqa: F401
+        AppleDeviceRegistration,
+        LoyaltyCard,
+        LoyaltyProgram,
+        LoyaltyTransaction,
+        MerchantLoyaltySettings,
+        StaffPin,
+    )
+
+    print("  ✓ Loyalty models (6)")
+except ImportError as e:
+    _import_errors.append(f"loyalty: {e}")
+    print(f"  ✗ Loyalty models failed: {e}")
+
+# ----------------------------------------------------------------------------
+# DEV_TOOLS MODULE (8 models)
+# ----------------------------------------------------------------------------
+try:
+    from app.modules.dev_tools.models import (  # noqa: F401
+        ArchitectureRule,
+        ArchitectureScan,
+        ArchitectureViolation,
+        TestCollection,
+        TestResult,
+        TestRun,
+        ViolationAssignment,
+        ViolationComment,
+    )
+
+    print("  ✓ Dev Tools models (8)")
+except ImportError as e:
+    _import_errors.append(f"dev_tools: {e}")
+    print(f"  ✗ Dev Tools models failed: {e}")
 
 # ============================================================================
 # SUMMARY
 # ============================================================================
 print("=" * 70)
-print("[ALEMBIC] Model import completed")
-print("[ALEMBIC] Tables detected in metadata:")
-print("=" * 70)
-
-if Base.metadata.tables:
-    for i, table_name in enumerate(sorted(Base.metadata.tables.keys()), 1):
-        print(f"  {i:2d}. {table_name}")
+if _import_errors:
+    print(f"[ALEMBIC] WARNING: {len(_import_errors)} import error(s):")
+    for err in _import_errors:
+        print(f"  - {err}")
     print("=" * 70)
-    print(f"[ALEMBIC] Total tables: {len(Base.metadata.tables)}")
-else:
-    print("  ⚠️  WARNING: No tables found in metadata!")
-    print("  This usually means models are not being imported correctly.")
 
+print(f"[ALEMBIC] Total tables in metadata: {len(Base.metadata.tables)}")
 print("=" * 70)
 print()