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/finalhandler/SECURITY.md

@@ -0,0 +1,25 @@
+# Security Policies and Procedures
+
+## Reporting a Bug
+
+The `finalhandler` team and community take all security bugs seriously. Thank
+you for improving the security of Express. We appreciate your efforts and
+responsible disclosure and will make every effort to acknowledge your
+contributions.
+
+Report security bugs by emailing the current owner(s) of `finalhandler`. This
+information can be found in the npm registry using the command
+`npm owner ls finalhandler`.
+If unsure or unable to get the information from the above, open an issue
+in the [project issue tracker](https://github.com/pillarjs/finalhandler/issues)
+asking for the current contact information.
+
+To ensure the timely response to your report, please ensure that the entirety
+of the report is contained within the email body and not solely behind a web
+link or an attachment.
+
+At least one owner will acknowledge your email within 48 hours, and will send a
+more detailed response within 48 hours indicating the next steps in handling
+your report. After the initial reply to your report, the owners will
+endeavor to keep you informed of the progress towards a fix and full
+announcement, and may ask for additional information or guidance.