feat: Add Findagram and FindADispo consumer frontends

- Add findagram.co React frontend with product search, brands, categories
- Add findadispo.com React frontend with dispensary locator
- Wire findagram to backend /api/az/* endpoints
- Update category/brand links to route to /products with filters
- Add k8s manifests for both frontends
- Add multi-domain user support migrations

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

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

findagram/backend/app/routes/__init__.py

@@ -0,0 +1,11 @@
+from fastapi import APIRouter
+
+from app.routes import auth, products, categories, brands, users
+
+api_router = APIRouter()
+
+api_router.include_router(auth.router, prefix="/auth", tags=["auth"])
+api_router.include_router(products.router, prefix="/products", tags=["products"])
+api_router.include_router(categories.router, prefix="/categories", tags=["categories"])
+api_router.include_router(brands.router, prefix="/brands", tags=["brands"])
+api_router.include_router(users.router, prefix="/users", tags=["users"])