Add supplier and imporve inventory frontend

services/inventory/app/models/inventory.py

@@ -106,7 +106,6 @@ class Ingredient(Base):
     # Product details
     description = Column(Text, nullable=True)
     brand = Column(String(100), nullable=True)  # Brand or central baker name
-    supplier_name = Column(String(200), nullable=True)  # Central baker or distributor
     unit_of_measure = Column(SQLEnum(UnitOfMeasure), nullable=False)
     package_size = Column(Float, nullable=True)  # Size per package/unit
     
@@ -158,7 +157,6 @@ class Ingredient(Base):
         Index('idx_ingredients_ingredient_category', 'tenant_id', 'ingredient_category', 'is_active'),
         Index('idx_ingredients_product_category', 'tenant_id', 'product_category', 'is_active'),
         Index('idx_ingredients_stock_levels', 'tenant_id', 'low_stock_threshold', 'reorder_point'),
-        Index('idx_ingredients_central_baker', 'tenant_id', 'supplier_name', 'product_type'),
     )
     
     def to_dict(self) -> Dict[str, Any]:
@@ -194,7 +192,6 @@ class Ingredient(Base):
             'subcategory': self.subcategory,
             'description': self.description,
             'brand': self.brand,
-            'supplier_name': self.supplier_name,
             'unit_of_measure': self.unit_of_measure.value if self.unit_of_measure else None,
             'package_size': self.package_size,
             'average_cost': float(self.average_cost) if self.average_cost else None,
@@ -230,6 +227,9 @@ class Stock(Base):
     tenant_id = Column(UUID(as_uuid=True), nullable=False, index=True)
     ingredient_id = Column(UUID(as_uuid=True), ForeignKey('ingredients.id'), nullable=False, index=True)
 
+    # Supplier association
+    supplier_id = Column(UUID(as_uuid=True), nullable=True, index=True)
+
     # Stock identification
     batch_number = Column(String(100), nullable=True, index=True)
     lot_number = Column(String(100), nullable=True, index=True)