fix lint, update comment

e2e_test.go

@@ -416,7 +416,6 @@ var _ io.Closer = (*mockQuerier)(nil)
 
 // mockQuerier returns fake SQL results to tests
 type mockQuerier struct {
-	name       string
 	queryFn    func(ctx context.Context, query string, args ...any) (*sql.Rows, error)
 	queryRowFn func(ctx context.Context, query string, args ...any) *sql.Row
 	closeFn    func() error

node.go

@@ -45,7 +45,7 @@ func NewNode[T Querier](name string, db T) *Node[T] {
 	return &Node[T]{name: name, db: db}
 }
 
-// DB returns node's database/sql DB
+// DB returns node's database connection
 func (n *Node[T]) DB() T {
 	return n.db
 }