chore: auto-commit (15 archivos)

- apps/dag_engine/.gitignore
- apps/dag_engine/README.md
- apps/dag_engine/app.md
- apps/dag_engine/config.go
- apps/dag_engine/dags_migrated/fn_backup.yaml
- apps/dag_engine/dags_migrated/revision_viernes_finanzas.yaml
- apps/dag_engine/executor.go
- apps/dag_engine/frontend/package.json
- apps/dag_engine/frontend/src/App.tsx
- apps/dag_engine/frontend/src/components/StatusBadge.tsx
- ...

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/dag_engine/.gitignore

@@ -16,3 +16,9 @@ vendor/
 
 # OS
 .DS_Store
+
+# Runtime DB (datos vivos, no se versiona)
+*.db
+*.db-shm
+*.db-wal
+*.bak*