Initial commit with Phase 0 Scaffolding

backend/app/api/v1/__init__.py

@@ -0,0 +1,10 @@
+"""API v1 router — aggregates all sub-routers."""
+
+from fastapi import APIRouter
+
+from app.api.v1.health import router as health_router
+
+router = APIRouter(prefix="/api/v1")
+
+# Health (unauthenticated)
+router.include_router(health_router)