feat: autenticação com cookie de sessão + tela de login Arcade Neon

- Go: middleware RequireAuth protege todas as rotas /api/*
- Go: POST /api/login valida APP_USERNAME/APP_PASSWORD e emite cookie HttpOnly 30 dias
- Go: GET /api/auth/me e POST /api/logout
- Vue: LoginView com design Arcade Neon
- Vue: router guard redireciona para /login se não autenticado
- Vue: api.ts redireciona para /login em qualquer 401
- docker-compose: APP_USERNAME e APP_PASSWORD como env vars

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

docker-compose.yml

@@ -17,14 +17,21 @@ services:
   app:
     build: .
     restart: unless-stopped
-    ports:
-      - "${APP_PORT:-8080}:8080"
     environment:
       DATABASE_URL: postgres://financeiro:${POSTGRES_PASSWORD:-financeiro}@postgres:5432/financeiro?sslmode=disable
       PORT: 8080
+      APP_USERNAME: ${APP_USERNAME}
+      APP_PASSWORD: ${APP_PASSWORD}
     depends_on:
       postgres:
         condition: service_healthy
+    networks:
+      - default
+      - dokploy-network
 
 volumes:
   postgres_data:
+
+networks:
+  dokploy-network:
+    external: true