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>

client/node_modules/browserslist/package.json

@@ -0,0 +1,45 @@
+{
+  "name": "browserslist",
+  "version": "4.28.1",
+  "description": "Share target browsers between different front-end tools, like Autoprefixer, Stylelint and babel-env-preset",
+  "keywords": [
+    "caniuse",
+    "browsers",
+    "target"
+  ],
+  "funding": [
+    {
+      "type": "opencollective",
+      "url": "https://opencollective.com/browserslist"
+    },
+    {
+      "type": "tidelift",
+      "url": "https://tidelift.com/funding/github/npm/browserslist"
+    },
+    {
+      "type": "github",
+      "url": "https://github.com/sponsors/ai"
+    }
+  ],
+  "author": "Andrey Sitnik <andrey@sitnik.ru>",
+  "license": "MIT",
+  "repository": "browserslist/browserslist",
+  "dependencies": {
+    "baseline-browser-mapping": "^2.9.0",
+    "caniuse-lite": "^1.0.30001759",
+    "electron-to-chromium": "^1.5.263",
+    "node-releases": "^2.0.27",
+    "update-browserslist-db": "^1.2.0"
+  },
+  "engines": {
+    "node": "^6 || ^7 || ^8 || ^9 || ^10 || ^11 || ^12 || >=13.7"
+  },
+  "bin": {
+    "browserslist": "cli.js"
+  },
+  "types": "./index.d.ts",
+  "browser": {
+    "./node.js": "./browser.js",
+    "path": false
+  }
+}