feat: add frontend, nginx reverse proxy and monitoring/reports extras

- apps/frontend: Next.js 15 (App Router) + Tailwind v4 + componentes estilo
  shadcn/ui sobre Radix UI + TanStack Query. Tema light/dark, logo
  processada. Menu completo (secao 52) com gating por permissao real.
  Todas as telas do checklist de aceite (secao 90) conectadas a endpoints
  reais (nao mockup): login, usuarios, perfis/permissoes, ramais/troncos,
  dialplan, filas/agentes, console do agente, campanhas (CPS/CSV/
  iniciar/pausar), monitoramento ao vivo (polling, nao WebSocket real),
  TME/TMA, busca/export de chamadas, administracao do Asterisk, auditoria
- infrastructure/nginx: reverse proxy colocando frontend+API na mesma
  origem (porta 80), antecipado da Fase 9 pois a API nao publica porta
  propria
- apps/api: GET /api/monitoring/agents (estado corrente real via
  agent_state_events em aberto) e filtro queueId em GET /api/reports/calls

Pendencia registrada: tela de Callbacks nao implementada (schema existe
desde a Fase 6, mas nunca houve controller/service — construir a tela sem
API real seria mockup). Verificacao visual em navegador nao foi possivel
neste ambiente headless; validado via tsc/eslint/next build limpos + curl
reproduzindo as chamadas do navegador (middleware de auth, 24 paginas
protegidas via Nginx, endpoints de dados com cookie de sessao).

apps/frontend/package.json

@@ -0,0 +1,46 @@
+{
+  "name": "@b2bcall/frontend",
+  "version": "0.1.0",
+  "private": true,
+  "scripts": {
+    "dev": "next dev --port 3001",
+    "build": "next build",
+    "start": "next start --port 3001",
+    "lint": "eslint \"src/**/*.{ts,tsx}\"",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "next": "^15.5.4",
+    "react": "^19.2.0",
+    "react-dom": "^19.2.0",
+    "@tanstack/react-query": "^5.90.2",
+    "@radix-ui/react-dialog": "^1.1.15",
+    "@radix-ui/react-dropdown-menu": "^2.1.16",
+    "@radix-ui/react-select": "^2.2.6",
+    "@radix-ui/react-tabs": "^1.1.13",
+    "@radix-ui/react-switch": "^1.2.6",
+    "@radix-ui/react-checkbox": "^1.3.3",
+    "@radix-ui/react-toast": "^1.2.15",
+    "@radix-ui/react-label": "^2.1.7",
+    "@radix-ui/react-slot": "^1.2.3",
+    "@radix-ui/react-tooltip": "^1.2.8",
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
+    "tailwind-merge": "^3.3.1",
+    "lucide-react": "^0.545.0",
+    "recharts": "^2.15.4",
+    "zod": "^3.25.76",
+    "date-fns": "^4.1.0"
+  },
+  "devDependencies": {
+    "typescript": "^5.9.3",
+    "@types/node": "^24.6.2",
+    "@types/react": "^19.2.2",
+    "@types/react-dom": "^19.2.1",
+    "eslint": "^9.38.0",
+    "eslint-config-next": "^15.5.4",
+    "@eslint/eslintrc": "^3.3.1",
+    "tailwindcss": "^4.1.16",
+    "@tailwindcss/postcss": "^4.1.16"
+  }
+}