Squashed commit of the following:

commit 893b229cc6
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 22:14:08 2025 -0500

    j

commit 06f539aea2
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:55:30 2025 -0500

    fk

commit d0c2960ec9
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:50:53 2025 -0500

    frick

commit 6b1362c166
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:49:40 2025 -0500

    database

commit 8cadc6df4c
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:38:09 2025 -0500

    asdf

commit 1ca6f98684
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:32:50 2025 -0500

    fffff

commit 8bb337a9c3
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:31:13 2025 -0500

    ffff

commit 65aba280c5
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:26:16 2025 -0500

    aa

commit 59ef03a59e
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:24:21 2025 -0500

    asdf

commit f44d5740fc
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:23:32 2025 -0500

    aaa

commit 13c96b1643
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:18:54 2025 -0500

    sdf

commit 949c795fd1
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 21:17:53 2025 -0500

    asdf

commit 8c3cd423fe
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:56:01 2025 -0500

    app2

commit 78eafc739e
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:54:55 2025 -0500

    app

commit dc47eced14
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:43:15 2025 -0500

    asdfasdfasdf

commit e24bcae88c
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:39:44 2025 -0500

    a

commit c894451bfe
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:38:20 2025 -0500

    req

commit 3d09869562
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:33:27 2025 -0500

    wrong number = code dont work lol i love computers

commit 4c93a1271b
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 20:29:39 2025 -0500

    q

commit 1f5361da88
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 18:27:20 2025 -0500

    same as original code now -5 days of my life

commit 511b070cbb
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 13:52:28 2025 -0500

    pricey worky

commit 964fdd641b
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Fri Feb 7 11:37:29 2025 -0500

    prep for pricing service work

commit a78c3bcba3
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Wed Feb 5 21:51:22 2025 -0500

    more stuff yay

commit bd9cfca7a9
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Tue Feb 4 22:30:33 2025 -0500

    GIGA FIXED EVERYTHING OMG

commit 85510a4671
Author: zman <joshua.k.rzemien@gmail.com>
Date:   Tue Feb 4 00:01:34 2025 -0500

    data model change and some new services

app/services/inventory.py

@@ -0,0 +1,90 @@
+from typing import Dict
+
+from sqlalchemy.orm import Session
+from sqlalchemy.exc import SQLAlchemyError
+
+from app.db.models import Product, Inventory
+from app.schemas.inventory import UpdateInventoryResponse
+from app.db.utils import db_transaction
+
+
+class InventoryService:
+    """Service class for managing product inventory operations."""
+
+    def __init__(self, db: Session) -> None:
+        """
+        Initialize the InventoryService.
+
+        Args:
+            db: SQLAlchemy database session
+        """
+        self.db = db
+
+    def add_inventory(self, product: Product, quantity: int) -> Inventory:
+        """
+        Add or update inventory for a product.
+
+        Args:
+            product: Product model instance
+            quantity: Quantity to add to inventory
+
+        Returns:
+            Updated Inventory model instance
+        """
+        inventory = self.db.query(Inventory).filter(
+            Inventory.product_id == product.id
+        ).first()
+
+        if inventory is None:
+            inventory = Inventory(
+                product_id=product.id,
+                quantity=quantity
+            )
+            self.db.add(inventory)
+        else:
+            inventory.quantity += quantity
+
+        return inventory
+
+    def process_staged_products(
+        self,
+        product_data: Dict[Product, int]
+    ) -> UpdateInventoryResponse:
+        """
+        Process multiple products and update their inventory.
+
+        Args:
+            product_data: Dictionary mapping Products to their quantities
+
+        Returns:
+            Response indicating success status
+        """
+        try:
+            with db_transaction(self.db):
+                for product, quantity in product_data.items():
+                    self.add_inventory(product, quantity)
+            return UpdateInventoryResponse(success=True)
+        except SQLAlchemyError:
+            return UpdateInventoryResponse(success=False)
+
+    def add_sealed_box_to_inventory(
+        self,
+        product: Product,
+        quantity: int
+    ) -> UpdateInventoryResponse:
+        """
+        Add sealed box inventory for a single product.
+
+        Args:
+            product: Product model instance
+            quantity: Quantity to add to inventory
+
+        Returns:
+            Response indicating success status
+        """
+        try:
+            with db_transaction(self.db):
+                self.add_inventory(product, quantity)
+            return UpdateInventoryResponse(success=True)
+        except SQLAlchemyError:
+            return UpdateInventoryResponse(success=False)