feat(F-001): scaffold modular monolith skeleton with boundary checker

- TypeScript + Fastify skeleton under project/ (src/modules, shared, infrastructure, app)
- scripts/check-module-boundaries.mjs enforcing module public-API rules (tested with fixtures)
- GET /health endpoint, error envelope without stack leakage
- specs/F-001-scaffold (SPEC/DESIGN/TASKS/TESTS), spec/tech.md dependency justification
- 30-ticket MercadoDeVida roadmap in backlog/features.json, spec/roadmap.md
- All gates approved: reviewer, security, qa; verify.sh green

work/runtime-status.json

@@ -0,0 +1,11 @@
+{
+  "feature_id": null,
+  "stage": "idle",
+  "agent": "leader",
+  "action": "Sin ejecución activa",
+  "state": "waiting",
+  "next_agent": "leader",
+  "waiting_for": "Seleccionar una feature pending y actualizar este estado",
+  "updated_at": "2026-08-14T19:46:48Z",
+  "timeline": []
+}