chore: adiciona Docker, scripts e documentacao

- Adiciona Dockerfile e docker-compose para containerizacao
- Adiciona docker-entrypoint.sh com inicializacao
- Adiciona scripts/seed-admin.js para criar admin inicial
- Adiciona docs/ com logos originais CambioReal
- Atualiza README.md com instrucoes de uso
- Atualiza queries.js com metricas de portfólio

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.dockerignore

@@ -0,0 +1,34 @@
+# Dependencies
+node_modules
+
+# Data files (mounted as volume)
+data/
+
+# Environment files
+.env
+.env.local
+
+# Git
+.git
+.gitignore
+
+# Docs
+docs/
+README.md
+*.md
+
+# IDE
+.vscode
+.idea
+
+# BMAD
+_bmad/
+_bmad-output/
+
+# Logs
+*.log
+npm-debug.log*
+
+# OS
+.DS_Store
+Thumbs.db