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>

frontend/node_modules/@jridgewell/sourcemap-codec/src/vlq.ts

@@ -0,0 +1,55 @@
+import type { StringReader, StringWriter } from './strings';
+
+export const comma = ','.charCodeAt(0);
+export const semicolon = ';'.charCodeAt(0);
+
+const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
+const intToChar = new Uint8Array(64); // 64 possible chars.
+const charToInt = new Uint8Array(128); // z is 122 in ASCII
+
+for (let i = 0; i < chars.length; i++) {
+  const c = chars.charCodeAt(i);
+  intToChar[i] = c;
+  charToInt[c] = i;
+}
+
+export function decodeInteger(reader: StringReader, relative: number): number {
+  let value = 0;
+  let shift = 0;
+  let integer = 0;
+
+  do {
+    const c = reader.next();
+    integer = charToInt[c];
+    value |= (integer & 31) << shift;
+    shift += 5;
+  } while (integer & 32);
+
+  const shouldNegate = value & 1;
+  value >>>= 1;
+
+  if (shouldNegate) {
+    value = -0x80000000 | -value;
+  }
+
+  return relative + value;
+}
+
+export function encodeInteger(builder: StringWriter, num: number, relative: number): number {
+  let delta = num - relative;
+
+  delta = delta < 0 ? (-delta << 1) | 1 : delta << 1;
+  do {
+    let clamped = delta & 0b011111;
+    delta >>>= 5;
+    if (delta > 0) clamped |= 0b100000;
+    builder.write(intToChar[clamped]);
+  } while (delta > 0);
+
+  return num;
+}
+
+export function hasMoreVlq(reader: StringReader, max: number) {
+  if (reader.pos >= max) return false;
+  return reader.peek() !== comma;
+}