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_line_item_search.py

@@ -0,0 +1,44 @@
+"""
+Migration script to add line item search capabilities:
+- Enable pg_trgm extension for fuzzy text matching
+- Create GIN index on line_items.description for trigram similarity
+
+Run this script once after deploying the new code.
+"""
+import asyncio
+import logging
+from sqlalchemy import text
+from database import engine
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
+
+async def run_migration():
+    """Add pg_trgm extension and trigram index for line item search."""
+    logger.info("Running line item search migration...")
+
+    # Enable pg_trgm extension for fuzzy text matching
+    try:
+        async with engine.begin() as conn:
+            await conn.execute(text("CREATE EXTENSION IF NOT EXISTS pg_trgm"))
+            logger.info("Enabled pg_trgm extension")
+    except Exception as e:
+        logger.warning(f"pg_trgm extension: {e}")
+
+    # Create GIN index for trigram similarity on description
+    try:
+        async with engine.begin() as conn:
+            await conn.execute(text(
+                "CREATE INDEX IF NOT EXISTS ix_line_items_description_trgm "
+                "ON line_items USING gin (description gin_trgm_ops)"
+            ))
+            logger.info("Created trigram index on line_items.description")
+    except Exception as e:
+        logger.warning(f"Trigram index: {e}")
+
+    logger.info("Line item search migration completed!")
+
+
+if __name__ == "__main__":
+    asyncio.run(run_migration())