v2.0.0: claims model - signed MMUR2 votes in a truth DB, merged view in a rebuildable cache DB; POST /api/claims, claims and merge routes, unsigned writes answer 410

internal/api/cid_resolve.go

@@ -56,6 +56,12 @@ func (s *Server) handleGetMetaByCID(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	if as := r.URL.Query().Get("as"); as != "" {
+		if flat, err := s.storage.GetMetadataFlatAs(uuid, as); err == nil && flat != nil {
+			doc.Flat = flat
+		}
+	}
+
 	// Response envelope mirrors GetMetadataDocument JSON tags (metadata /
 	// cids / canonical_cid / duplicates), with cid added so the caller can
 	// correlate when they fan out N lookups. canonical_cid is derived by