Initial scaffold: full-stack mRemotify monorepo

Sets up the complete mRemotify project — a browser-based remote
connection manager — with a working pnpm workspace monorepo:

Frontend (React + TypeScript + Vite + Ant Design 5):
- Login page with JWT auth
- Resizable sidebar with drag-and-drop connection tree (folders + connections)
- Tabbed session area (SSH via xterm.js, RDP via guacamole-common-js)
- Connection CRUD modal with SSH/RDP-specific fields
- Zustand store for auth, tree data, and open sessions

Backend (Fastify + TypeScript + Prisma + PostgreSQL):
- JWT authentication (login + /me endpoint)
- Full CRUD REST API for folders (self-referencing) and connections
- AES-256-CBC password encryption at rest
- WebSocket proxy for SSH sessions (ssh2 <-> xterm.js)
- WebSocket proxy for RDP sessions (guacd TCP handshake + bidirectional relay)
- Admin user seeding on first start

Infrastructure:
- Docker Compose: postgres (healthcheck) + guacd + backend + frontend/nginx
- nginx: serves SPA, proxies /api and /ws (with WebSocket upgrade) to backend
- .env.example with all required variables documented

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

docker/backend.Dockerfile

@@ -0,0 +1,38 @@
+# syntax=docker/dockerfile:1
+
+# ---- Build stage ----
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Install all dependencies (including devDeps for tsc, prisma CLI, tsx)
+COPY backend/package*.json ./
+RUN npm install
+
+# Copy backend source files
+COPY backend/prisma ./prisma
+COPY backend/src ./src
+COPY backend/tsconfig.json ./
+
+# Generate Prisma client and compile TypeScript
+RUN npx prisma generate
+RUN npx tsc
+
+# ---- Runtime stage ----
+FROM node:20-alpine AS runner
+
+WORKDIR /app
+
+# Copy only production runtime artifacts
+COPY --from=builder /app/node_modules ./node_modules
+COPY --from=builder /app/dist ./dist
+COPY --from=builder /app/prisma ./prisma
+COPY --from=builder /app/package.json ./
+
+EXPOSE 3000
+
+# Migrate schema, seed admin user, then start the server
+CMD ["sh", "-c", \
+  "node_modules/.bin/prisma migrate deploy && \
+   node dist/seed.js && \
+   node dist/index.js"]