Initial kitchen scaffold — Phase 1 kitchen port (build-verified 2026-07-11)

FastAPI backend (Python 3.11, MSSQL ODBC for SambaPOS, Azure DI OCR),
kitchen_db on central PG. React/TS/Vite frontend with navy sidebar layout.

Backend: auth.py (APP_SLUG=kitchen, SimpleNamespace — archive routes use
.kitchen_id/.is_admin without modification), main.py (51 migrations, scheduler,
internal router for KDS bookings feed), api/internal.py, full archive API
(31 routers: invoices, recipes, menus, sambapos, resos, newbook, disputes,
purchase_orders, etc.), models, migrations, OCR pipeline.
kitchen_id pinned to 1 (B1 — single hotel).

Frontend: AuthGate (app=kitchen, token shim for archive compat — B5b pending),
Layout (navy sidebar, 6 sections, Lucide icons, teal --app-primary),
App.tsx (Outlet pattern, UploadApp outside Layout), index.css (full :root block).
strict: false — archive components have type issues; build clean.

Note: 45 archive components call fetch('/api/...') without /kitchen/ prefix
(B5b). Runtime 404s; deferred until after initial testing.

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

backend/models/supplier.py

@@ -0,0 +1,46 @@
+from datetime import datetime
+from typing import Optional
+from sqlalchemy import String, DateTime, ForeignKey, JSON, Boolean
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+from database import Base
+
+
+class Supplier(Base):
+    __tablename__ = "suppliers"
+
+    id: Mapped[int] = mapped_column(primary_key=True, index=True)
+    kitchen_id: Mapped[int] = mapped_column(ForeignKey("kitchens.id"), nullable=False)
+    name: Mapped[str] = mapped_column(String(255), nullable=False)
+
+    # Alternative names for this supplier (for OCR matching)
+    # Example: ["US Foods Inc", "USF", "U.S. Foods"]
+    aliases: Mapped[Optional[list]] = mapped_column(JSON, default=list)
+
+    # Template configuration for OCR extraction patterns
+    # Example: {"invoice_number": "INV-\\d+", "date": "\\d{2}/\\d{2}/\\d{4}", "total": "Total:\\s*£?([\\d,]+\\.\\d{2})"}
+    template_config: Mapped[dict] = mapped_column(JSON, default=dict)
+
+    # Identifier patterns to auto-detect this supplier from invoices
+    # Example: {"keywords": ["Sysco", "SYSCO FOODS"], "logo_hash": "abc123"}
+    identifier_config: Mapped[dict] = mapped_column(JSON, default=dict)
+
+    # Skip sending invoices from this supplier to Dext
+    skip_dext: Mapped[bool] = mapped_column(Boolean, default=False, nullable=False)
+
+    # Purchase order fields
+    order_email: Mapped[str | None] = mapped_column(String(255), nullable=True)
+    account_number: Mapped[str | None] = mapped_column(String(100), nullable=True)
+
+    created_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow)
+    updated_at: Mapped[datetime] = mapped_column(DateTime, default=datetime.utcnow, onupdate=datetime.utcnow)
+
+    # Relationships
+    kitchen: Mapped["Kitchen"] = relationship("Kitchen", back_populates="suppliers")
+    invoices: Mapped[list["Invoice"]] = relationship("Invoice", back_populates="supplier")
+    purchase_orders: Mapped[list["PurchaseOrder"]] = relationship("PurchaseOrder", back_populates="supplier")
+
+
+# Forward reference
+from .user import Kitchen
+from .invoice import Invoice
+from .purchase_order import PurchaseOrder