Stop treating tool errors as command log boundaries when copying git output

A non-indented error line followed by indented context matches the shape
of an action plus command, so copied git output was truncated mid-block.
Only treat the next line as a new log entry when it looks like a lazygit
command rather than any indented text.

pkg/gui/command_log_panel.go

@@ -146,12 +146,16 @@ func isStartOfNewCommandLogEntry(lines []string, i int) bool {
 		if isCopyToClipboardLogLine(lines[j]) {
 			continue
 		}
-		return strings.HasPrefix(lines[j], "  ")
+		return isLazygitCommandLogLine(lines[j])
 	}
 
 	return false
 }
 
+func isLazygitCommandLogLine(line string) bool {
+	return isCopyToClipboardLogLine(line) || strings.HasPrefix(line, "  git ")
+}
+
 func (gui *Gui) LogCommand(cmdStr string, commandLine bool) {
 	if gui.Views.Extras == nil {
 		return

pkg/gui/command_log_panel_test.go

@@ -38,6 +38,28 @@ func TestGitOutputBlocksIncludeIndentedStderr(t *testing.T) {
 	assert.Equal(t, []string{"Push\n  git push\n\nGit output:\n  at foo.go:10\n  at bar.go:20\nhook failed"}, gitOutputBlocksFromCommandLogLines(lines, gitOutputHeader))
 }
 
+func TestGitOutputBlocksIncludeToolErrorWithIndentedContext(t *testing.T) {
+	t.Parallel()
+
+	lines := []string{
+		"Push",
+		"  git push",
+		gitOutputHeader,
+		"Error: validation failed",
+		"  line 42: syntax error",
+		"more output",
+		"Stage file",
+		"  git add foo",
+		gitOutputHeader,
+		"second command output",
+	}
+
+	assert.Equal(t, []string{
+		"Push\n  git push\n\nGit output:\nError: validation failed\n  line 42: syntax error\nmore output",
+		"Stage file\n  git add foo\n\nGit output:\nsecond command output",
+	}, gitOutputBlocksFromCommandLogLines(lines, gitOutputHeader))
+}
+
 func TestGitOutputBlocksSkipCopyNotifications(t *testing.T) {
 	t.Parallel()