chore: sync submodule state (parent ref update)

Made-with: Cursor

backend/api/rest/blocks.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"database/sql"
 	"encoding/json"
-	"fmt"
 	"net/http"
 	"time"
 )
@@ -41,7 +40,7 @@ func (s *Server) handleGetBlockByNumber(w http.ResponseWriter, r *http.Request,
 	)
 
 	if err != nil {
-		http.Error(w, fmt.Sprintf("Block not found: %v", err), http.StatusNotFound)
+		writeNotFound(w, "Block")
 		return
 	}
 
@@ -103,7 +102,7 @@ func (s *Server) handleGetBlockByHash(w http.ResponseWriter, r *http.Request, ha
 	)
 
 	if err != nil {
-		http.Error(w, fmt.Sprintf("Block not found: %v", err), http.StatusNotFound)
+		writeNotFound(w, "Block")
 		return
 	}