Show staged pins in the tree

A staged pin was only visible in the detail pane, so the header's
"n pin staged" could not be traced to a row. The status column now shows
a blue "staged" instead of "in sync", a blue marker after an issue word,
and the marker on collapsed rows with a staged pin below. It is still not an
issue and not counted in +n.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/tui/detail/detail.go

@@ -97,11 +97,11 @@ func (m Model) lines(s *submodule.Submodule) []string {
 	for _, is := range issues {
 		out = append(out, t.LevelStyle(is.Level, lipgloss.NewStyle()).Width(labelWidth).Render(theme.IssueWord(is.Kind))+text.Render(is.Detail))
 	}
-	if len(issues) == 0 {
+	if len(issues) == 0 && !st.PinStaged {
 		out = append(out, label(theme.InSync)+muted.Render("nothing to do"))
 	}
 	if st.PinStaged {
-		out = append(out, theme.Fg(t.Info).Width(labelWidth).Render("staged")+text.Render("pin change staged, not committed"))
+		out = append(out, theme.Fg(t.Info).Width(labelWidth).Render(theme.Staged)+text.Render("pin change staged, not committed"))
 	}
 	if st.Checkout == submodule.CheckoutDetached {
 		out = append(out, label("")+muted.Render("detached HEAD on pin"))
@@ -170,6 +170,9 @@ func (m Model) lines(s *submodule.Submodule) []string {
 		if h.Warn > 0 {
 			parts = append(parts, t.LevelStyle(submodule.LevelWarn, lipgloss.NewStyle()).Render(fmt.Sprintf("%d warning(s)", h.Warn)))
 		}
+		if h.Staged > 0 {
+			parts = append(parts, theme.Fg(t.Info).Render(fmt.Sprintf("%d %s", h.Staged, theme.Staged)))
+		}
 		if len(parts) > 0 {
 			children += muted.Render(" · ") + strings.Join(parts, muted.Render(", ")) + muted.Render(" below")
 		}

internal/tui/theme/issues.go

@@ -12,6 +12,10 @@ import (
 // InSync is the word for a submodule without issues.
 const InSync = "in sync"
 
+// Staged is the word for a pin change staged in the superproject. It is not
+// an issue: it replaces InSync, or follows an issue word as a marker.
+const Staged = "staged"
+
 // IssueWord is the short label for an issue kind shown in the tree.
 func IssueWord(k submodule.IssueKind) string {
 	switch k {

internal/tui/tree/tree.go

@@ -410,7 +410,12 @@ func (m Model) nodeLine(r row, nameColW, refW int) string {
 	nameCell := seg(textColor, name) + seg(t.Muted, count) + pad(nameW-lipgloss.Width(name+count))
 
 	// status: the most severe issue as a word, "+n" for further issues;
-	// a muted "in sync" without issues, so an empty cell never looks broken
+	// a muted "in sync" without issues, so an empty cell never looks broken.
+	// A staged pin is no issue: it replaces "in sync", or follows the issue
+	// as a blue marker (also for staged pins below a collapsed row).
+	staged := s.Status != nil && s.Status.PinStaged
+	h := s.HiddenIssues()
+	stagedMark := staged && len(issues) > 0
 	var status string
 	switch {
 	case s.Err != nil:
@@ -422,10 +427,15 @@ func (m Model) nodeLine(r row, nameColW, refW int) string {
 		if len(issues) > 1 {
 			status += seg(t.Muted, fmt.Sprintf(" +%d", len(issues)-1))
 		}
+	case staged:
+		status = seg(t.Info, theme.Staged)
 	default:
 		status = seg(t.Muted, theme.InSync)
 	}
-	if h := s.HiddenIssues(); collapsed && h.Total() > 0 {
+	if stagedMark || collapsed && h.Staged > 0 {
+		status += pad(1) + seg(t.Info, t.Glyphs.Staged)
+	}
+	if collapsed && h.Total() > 0 {
 		for _, c := range []struct {
 			level submodule.Level
 			n     int