Add Milestones 1 & 2: full-stack POS foundation with admin UI

- Node/Express/TypeScript API under /api/v1 with JWT auth (login, refresh, logout, /me)
- Prisma schema: vendors, users, roles, products, categories, taxes, transactions
- SQLite for local dev; Postgres via docker-compose for production
- Full CRUD routes for vendors, users, categories, taxes, products with Zod validation and RBAC
- Paginated list endpoints scoped per vendor; refresh token rotation
- React/TypeScript admin SPA (Vite): login, protected routing, sidebar layout
- Pages: Dashboard, Catalog (tabbed Products/Categories/Taxes), Users, Vendor Settings
- Shared UI: Table, Modal, FormField, Btn, PageHeader components
- Multi-stage Dockerfile; docker-compose with Postgres healthcheck
- Seed script with demo vendor and owner account
- INSTRUCTIONS.md, ROADMAP.md, .claude/launch.json for dev server config

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

server/node_modules/call-bind-apply-helpers/index.d.ts

@@ -0,0 +1,64 @@
+type RemoveFromTuple<
+  Tuple extends readonly unknown[],
+  RemoveCount extends number,
+  Index extends 1[] = []
+> = Index["length"] extends RemoveCount
+  ? Tuple
+  : Tuple extends [infer First, ...infer Rest]
+  ? RemoveFromTuple<Rest, RemoveCount, [...Index, 1]>
+  : Tuple;
+
+type ConcatTuples<
+  Prefix extends readonly unknown[],
+  Suffix extends readonly unknown[]
+> = [...Prefix, ...Suffix];
+
+type ExtractFunctionParams<T> = T extends (this: infer TThis, ...args: infer P extends readonly unknown[]) => infer R
+  ? { thisArg: TThis; params: P; returnType: R }
+  : never;
+
+type BindFunction<
+  T extends (this: any, ...args: any[]) => any,
+  TThis,
+  TBoundArgs extends readonly unknown[],
+  ReceiverBound extends boolean
+> = ExtractFunctionParams<T> extends {
+  thisArg: infer OrigThis;
+  params: infer P extends readonly unknown[];
+  returnType: infer R;
+}
+  ? ReceiverBound extends true
+    ? (...args: RemoveFromTuple<P, Extract<TBoundArgs["length"], number>>) => R extends [OrigThis, ...infer Rest]
+      ? [TThis, ...Rest] // Replace `this` with `thisArg`
+      : R
+    : <U, RemainingArgs extends RemoveFromTuple<P, Extract<TBoundArgs["length"], number>>>(
+        thisArg: U,
+        ...args: RemainingArgs
+      ) => R extends [OrigThis, ...infer Rest]
+      ? [U, ...ConcatTuples<TBoundArgs, Rest>] // Preserve bound args in return type
+      : R
+  : never;
+
+declare function callBind<
+  const T extends (this: any, ...args: any[]) => any,
+  Extracted extends ExtractFunctionParams<T>,
+  const TBoundArgs extends Partial<Extracted["params"]> & readonly unknown[],
+  const TThis extends Extracted["thisArg"]
+>(
+  args: [fn: T, thisArg: TThis, ...boundArgs: TBoundArgs]
+): BindFunction<T, TThis, TBoundArgs, true>;
+
+declare function callBind<
+  const T extends (this: any, ...args: any[]) => any,
+  Extracted extends ExtractFunctionParams<T>,
+  const TBoundArgs extends Partial<Extracted["params"]> & readonly unknown[]
+>(
+  args: [fn: T, ...boundArgs: TBoundArgs]
+): BindFunction<T, Extracted["thisArg"], TBoundArgs, false>;
+
+declare function callBind<const TArgs extends readonly unknown[]>(
+  args: [fn: Exclude<TArgs[0], Function>, ...rest: TArgs]
+): never;
+
+// export as namespace callBind;
+export = callBind;