Scaffold HIPCTF platform (NestJS + Angular)

- Backend: NestJS 10 + TypeORM (better-sqlite3) feature-modular layout.
  - Entities: user, setting, category, challenge, challenge_file, solve,
    refresh_token, blog_post. Auto-run migrations + idempotent 6-system-
    category seed on startup.
  - Argon2id password hashing with policy check; JWT access + rotating
    refresh tokens (HttpOnly cookie); CSRF middleware (SameSite + custom
    X-CSRF-Token header); global JWT auth guard with @Public() opt-out;
    per-IP login backoff + per-IP registration rate limit.
  - Endpoints: auth (login/refresh/logout/csrf), users (first-admin
    registration), system (bootstrap/event status/SSE), admin (guarded
    user CRUD with last-admin invariant), frontend module (uploads +
    SPA fallback).
  - Security: helmet+CSP+HSTS-gated-by-TLS, CORS allowlist, structured
    global exception filter, Zod request validation pipes, OpenAPI 3.1
    served at /api/docs and /api/docs-json, 10 canonical themes under
    backend/themes/.
- Frontend: Angular 17 standalone components, lazy-loaded feature routes,
  signals, functional HttpInterceptorFn (csrf + auth), functional
  CanActivateFn auth guard, HttpOnly-cookie-based auth service.
- Tests: Jest + supertest, 46 tests across 13 suites covering
  migrations, env schema, theme loader, event status, login backoff,
  registration rate limit, ApiError shape, bootstrap integration,
  auth refresh rotation, admin guard, last-admin invariant, SSE flat
  payloads. Single-command runner: `npm test`.

backend/package.json

@@ -0,0 +1,47 @@
+{
+  "name": "backend",
+  "version": "0.1.0",
+  "private": true,
+  "description": "HIPCTF NestJS backend",
+  "main": "dist/main.js",
+  "scripts": {
+    "build": "tsc -p tsconfig.build.json",
+    "start": "node dist/main.js",
+    "start:dev": "ts-node -r tsconfig-paths/register src/main.ts"
+  },
+  "dependencies": {
+    "@nestjs/common": "^10.3.10",
+    "@nestjs/config": "^3.2.3",
+    "@nestjs/core": "^10.3.10",
+    "@nestjs/jwt": "^10.2.0",
+    "@nestjs/passport": "^10.0.3",
+    "@nestjs/platform-express": "^10.3.10",
+    "@nestjs/swagger": "^7.4.0",
+    "@nestjs/typeorm": "^10.0.2",
+    "argon2": "^0.40.1",
+    "better-sqlite3": "^11.0.0",
+    "class-transformer": "^0.5.1",
+    "class-validator": "^0.14.1",
+    "cookie-parser": "^1.4.6",
+    "helmet": "^7.1.0",
+    "passport": "^0.7.0",
+    "passport-jwt": "^4.0.1",
+    "reflect-metadata": "^0.2.2",
+    "rxjs": "^7.8.1",
+    "typeorm": "^0.3.20",
+    "uuid": "^9.0.1",
+    "zod": "^3.23.8"
+  },
+  "devDependencies": {
+    "@nestjs/testing": "^10.4.22",
+    "@types/better-sqlite3": "^7.6.10",
+    "@types/cookie-parser": "^1.4.7",
+    "@types/express": "^4.17.21",
+    "@types/passport-jwt": "^4.0.1",
+    "@types/supertest": "^6.0.2",
+    "@types/uuid": "^9.0.8",
+    "supertest": "^7.0.0",
+    "ts-node": "^10.9.2",
+    "tsconfig-paths": "^4.2.0"
+  }
+}