feat: add authentication and RBAC

- packages/database: schema Prisma (users/sessions/roles/permissions/
  user_roles/role_permissions/audit_logs/password_reset_tokens), migration
  inicial e seed (permissoes+perfis+bootstrap super_admin com senha
  aleatoria em FIRST_LOGIN.txt). Decisao de ORM (Prisma) documentada em
  docs/ARCHITECTURE.md
- packages/shared: catalogo de permissoes (fonte unica usada por seed e API)
- apps/api: NestJS 11 + Fastify
  - autenticacao: Argon2id, access JWT + refresh token opaco com rotacao,
    cookies HttpOnly/SameSite=Lax, change/forgot/reset password
  - rate limiting progressivo de login via Redis (bloqueio crescente por IP)
  - RBAC reforcado no backend (PermissionsGuard), protecao contra
    auto-elevacao de privilegio
  - auditoria (audit_logs) nas acoes sensiveis, com redacao de segredos
  - health checks reais (postgres+redis), swagger desabilitavel, logs
    estruturados JSON com request_id de correlacao, filtro global de
    excecoes sem vazar erro cru
- infrastructure/docker/api.Dockerfile: build multi-stage do monorepo pnpm
- docker-compose.yml: servico api na rede interna, sem porta publicada

Testado via containers reais: login, /me, refresh, change-password,
rate limit (7 tentativas -> 429), RBAC (nega/permite), bloqueio de
auto-elevacao (403), audit log populado, health checks, lint e testes
unitarios passando.

package.json

@@ -0,0 +1,18 @@
+{
+  "name": "b2bcall",
+  "private": true,
+  "version": "0.1.0",
+  "description": "B2BCall - plataforma de discagem preditiva / call center",
+  "engines": {
+    "node": ">=22"
+  },
+  "packageManager": "pnpm@11.24.0",
+  "scripts": {
+    "dev:api": "pnpm --filter @b2bcall/api start:dev",
+    "build": "pnpm -r build",
+    "lint": "pnpm -r lint",
+    "test": "pnpm -r test",
+    "db:migrate": "pnpm --filter @b2bcall/database prisma:migrate",
+    "db:seed": "pnpm --filter @b2bcall/database seed"
+  }
+}