fix: address verified review findings (terminal-output-1)

Signed-off-by: bircni <bircni@icloud.com>

internal/app/screen_rows_test.go

@@ -0,0 +1,18 @@
+// Copyright 2026 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package app
+
+import (
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestScreenRowsCountsWrappedLines(t *testing.T) {
+	require.Equal(t, 2, screenRows("one\ntwo\n", 80))
+	require.Equal(t, 2, screenRows("one\ntwo\n", 0))
+	require.Equal(t, 4, screenRows(strings.Repeat("x", 25)+"\nab\n", 10), "25 cells take 3 rows of 10")
+	require.Equal(t, 2, screenRows("\x1b[31m"+strings.Repeat("x", 10)+"\x1b[0m\n\x1b]8;;http://a/b\x1b\\link\x1b]8;;\x1b\\\n", 10), "escapes take no room")
+}