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>

backend/prisma/schema.prisma

@@ -0,0 +1,54 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("POSTGRES_URL")
+}
+
+model User {
+  id           String       @id @default(cuid())
+  username     String       @unique
+  passwordHash String
+  createdAt    DateTime     @default(now())
+  folders      Folder[]
+  connections  Connection[]
+
+  @@map("users")
+}
+
+model Folder {
+  id          String       @id @default(cuid())
+  name        String
+  parentId    String?
+  parent      Folder?      @relation("FolderChildren", fields: [parentId], references: [id])
+  children    Folder[]     @relation("FolderChildren")
+  userId      String
+  user        User         @relation(fields: [userId], references: [id], onDelete: Cascade)
+  connections Connection[]
+  createdAt   DateTime     @default(now())
+
+  @@map("folders")
+}
+
+model Connection {
+  id                String   @id @default(cuid())
+  name              String
+  host              String
+  port              Int
+  protocol          String
+  username          String
+  encryptedPassword String?
+  privateKey        String?
+  domain            String?
+  osType            String?
+  notes             String?
+  folderId          String?
+  folder            Folder?  @relation(fields: [folderId], references: [id], onDelete: SetNull)
+  userId            String
+  user              User     @relation(fields: [userId], references: [id], onDelete: Cascade)
+  createdAt         DateTime @default(now())
+
+  @@map("connections")
+}

backend/prisma/seed.ts

@@ -0,0 +1,3 @@
+// Seed logic has been moved to src/seed.ts.
+// The package.json prisma.seed config points to: tsx src/seed.ts
+// Run with: pnpm db:seed