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/migrations/add_flag_assessment.py

@@ -0,0 +1,45 @@
+"""
+Migration: Add 'required' to food_flag_categories, 'flags_assessed' to ingredients,
+and 'ingredient_flag_nones' table for per-category "None apply" tracking.
+"""
+import asyncio
+from sqlalchemy import text
+from database import engine
+
+
+async def migrate():
+    async with engine.begin() as conn:
+        # Add 'required' boolean to food_flag_categories (default false)
+        await conn.execute(text(
+            "ALTER TABLE food_flag_categories ADD COLUMN IF NOT EXISTS required BOOLEAN DEFAULT false"
+        ))
+
+        # Auto-set 'contains' categories as required (allergens should be assessed)
+        await conn.execute(text(
+            "UPDATE food_flag_categories SET required = true WHERE propagation_type = 'contains'"
+        ))
+
+        # Add 'flags_assessed' boolean to ingredients (kept for compat, not actively used)
+        await conn.execute(text(
+            "ALTER TABLE ingredients ADD COLUMN IF NOT EXISTS flags_assessed BOOLEAN DEFAULT false"
+        ))
+
+        # Create ingredient_flag_nones table (per-category "None apply" tracking)
+        await conn.execute(text("""
+            CREATE TABLE IF NOT EXISTS ingredient_flag_nones (
+                id SERIAL PRIMARY KEY,
+                ingredient_id INTEGER NOT NULL REFERENCES ingredients(id) ON DELETE CASCADE,
+                category_id INTEGER NOT NULL REFERENCES food_flag_categories(id) ON DELETE CASCADE,
+                created_at TIMESTAMP DEFAULT NOW(),
+                CONSTRAINT uq_ingredient_flag_nones_ing_cat UNIQUE (ingredient_id, category_id)
+            )
+        """))
+        await conn.execute(text(
+            "CREATE INDEX IF NOT EXISTS idx_ingredient_flag_nones_ing ON ingredient_flag_nones(ingredient_id)"
+        ))
+
+    print("+ Added food_flag_categories.required, ingredient_flag_nones table")
+
+
+if __name__ == "__main__":
+    asyncio.run(migrate())