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/toidentifier/README.md

@@ -0,0 +1,61 @@
+# toidentifier
+
+[![NPM Version][npm-image]][npm-url]
+[![NPM Downloads][downloads-image]][downloads-url]
+[![Build Status][github-actions-ci-image]][github-actions-ci-url]
+[![Test Coverage][codecov-image]][codecov-url]
+
+> Convert a string of words to a JavaScript identifier
+
+## Install
+
+This is a [Node.js](https://nodejs.org/en/) module available through the
+[npm registry](https://www.npmjs.com/). Installation is done using the
+[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
+
+```bash
+$ npm install toidentifier
+```
+
+## Example
+
+```js
+var toIdentifier = require('toidentifier')
+
+console.log(toIdentifier('Bad Request'))
+// => "BadRequest"
+```
+
+## API
+
+This CommonJS module exports a single default function: `toIdentifier`.
+
+### toIdentifier(string)
+
+Given a string as the argument, it will be transformed according to
+the following rules and the new string will be returned:
+
+1. Split into words separated by space characters (`0x20`).
+2. Upper case the first character of each word.
+3. Join the words together with no separator.
+4. Remove all non-word (`[0-9a-z_]`) characters.
+
+## License
+
+[MIT](LICENSE)
+
+[codecov-image]: https://img.shields.io/codecov/c/github/component/toidentifier.svg
+[codecov-url]: https://codecov.io/gh/component/toidentifier
+[downloads-image]: https://img.shields.io/npm/dm/toidentifier.svg
+[downloads-url]: https://npmjs.org/package/toidentifier
+[github-actions-ci-image]: https://img.shields.io/github/workflow/status/component/toidentifier/ci/master?label=ci
+[github-actions-ci-url]: https://github.com/component/toidentifier?query=workflow%3Aci
+[npm-image]: https://img.shields.io/npm/v/toidentifier.svg
+[npm-url]: https://npmjs.org/package/toidentifier
+
+
+##
+
+[npm]: https://www.npmjs.com/
+
+[yarn]: https://yarnpkg.com/