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/bcryptjs/externs/minimal-env.js

@@ -0,0 +1,98 @@
+/**
+ * @fileoverview Minimal environment for bcrypt.js.
+ * @externs
+ */
+
+/**
+ * @param {string} moduleName
+ * returns {*}
+ */
+function require(moduleName) {}
+
+/**
+ * @constructor
+ * @private
+ */
+var Module = function() {};
+
+/**
+ * @type {*}
+ */
+Module.prototype.exports;
+
+/**
+ * @type {Module}
+ */
+var module;
+
+/**
+ * @type {string}
+ */
+var __dirname;
+
+/**
+ * @type {Object.<string,*>}
+ */
+var process = {};
+
+/**
+ * @param {function()} func
+ */
+process.nextTick = function(func) {};
+
+/**
+ * @param {string} s
+ * @constructor
+ * @extends Array
+ */
+var Buffer = function(s) {};
+
+/**
+ BEGIN_NODE_INCLUDE
+ var crypto = require('crypto');
+ END_NODE_INCLUDE
+ */
+
+/**
+ * @type {Object.<string,*>}
+ */
+var crypto = {};
+
+/**
+ * @param {number} n
+ * @returns {Array.<number>}
+ */
+crypto.randomBytes = function(n) {};
+
+/**
+ * @type {Object.<string,*>}
+ */
+window.crypto = {};
+
+/**
+ * @param {Uint8Array|Int8Array|Uint16Array|Int16Array|Uint32Array|Int32Array} array
+ */
+window.crypto.getRandomValues = function(array) {};
+
+/**
+ * @param {string} name
+ * @param {function(...[*]):*} constructor
+ */
+var define = function(name, constructor) {};
+
+/**
+ * @type {boolean}
+ */
+define.amd;
+
+/**
+ * @param {...*} var_args
+ * @returns {string}
+ */
+String.fromCodePoint = function(var_args) {};
+
+/**
+ * @param {number} offset
+ * @returns {number}
+ */
+String.prototype.codePointAt = function(offset) {};