Add h keybinding to toggle hold/release via postsuper -h/-H

Preserves the ! suffix from postqueue -p output to track hold status
in QueueEntry, and optimistically toggles it in the UI.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

README.md

@@ -60,6 +60,7 @@ Subjects are fetched lazily in parallel via `postcat` as the list loads; a progr
 | `↑↓` / `Space` / `PgUp` / `PgDn` | Scroll      |
 | `H`             | Toggle full headers / short headers |
 | `s`             | Save raw EML to `~/QUEUEID.eml` |
+| `h`             | Toggle hold (`postsuper -h`/`-H`) |
 | `D`             | Delete message (`postsuper -d`) |
 | `F`             | Requeue message (`postsuper -r`) |
 | `v`             | Browse MIME parts               |

model.go

@@ -262,6 +262,15 @@ func (m Model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 				m.refreshViewport()
 				m.viewport.GotoTop()
 				return m, nil
+			case "h":
+				if idx, ok := m.entryIndex[m.currentID]; ok {
+					if m.entries[idx].OnHold {
+						m.entries[idx].OnHold = false
+						return m, releaseMessageCmd(m.currentID)
+					}
+					m.entries[idx].OnHold = true
+					return m, holdMessageCmd(m.currentID)
+				}
 			case "D":
 				id := m.currentID
 				m.state = stateList
@@ -398,8 +407,12 @@ func (m Model) View() string {
 		if m.showFullHeaders {
 			headersHint = "H: short headers"
 		}
+		holdHint := "h: hold"
+		if idx, ok := m.entryIndex[m.currentID]; ok && m.entries[idx].OnHold {
+			holdHint = "h: release"
+		}
 		status := statusBarStyle.Render(
-			fmt.Sprintf(" ↑↓/SPC/PgUp/Dn: scroll │ s: save EML │ D: delete │ F: requeue │ v: parts │ %s │ q: back │ %d%% ", headersHint, scrollPct),
+			fmt.Sprintf(" ↑↓/SPC/PgUp/Dn: scroll │ s: save EML │ D: delete │ F: requeue │ %s │ v: parts │ %s │ q: back │ %d%% ", holdHint, headersHint, scrollPct),
 		)
 		notice := ""
 		if m.messageSaving {

msgs.go

@@ -47,6 +47,20 @@ func flushQueueCmd() tea.Cmd {
 	}
 }
 
+func holdMessageCmd(id string) tea.Cmd {
+	return func() tea.Msg {
+		exec.Command("postsuper", "-h", id).Run()
+		return nil
+	}
+}
+
+func releaseMessageCmd(id string) tea.Cmd {
+	return func() tea.Msg {
+		exec.Command("postsuper", "-H", id).Run()
+		return nil
+	}
+}
+
 func deleteMessageCmd(id string) tea.Cmd {
 	return func() tea.Msg {
 		exec.Command("postsuper", "-d", id).Run()

queue.go

@@ -11,6 +11,7 @@ import (
 
 type QueueEntry struct {
 	ID      string
+	OnHold  bool
 	Size    int
 	Date    time.Time
 	Sender  string
@@ -114,9 +115,10 @@ func parseQueueLine(line string) *QueueEntry {
 		return nil
 	}
 
-	id := fields[0]
+	raw := fields[0]
+	onHold := strings.HasSuffix(raw, "!")
 	// Strip trailing status character (* or !)
-	id = strings.TrimRight(id, "*!")
+	id := strings.TrimRight(raw, "*!")
 
 	var size int
 	fmt.Sscanf(fields[1], "%d", &size)
@@ -137,6 +139,7 @@ func parseQueueLine(line string) *QueueEntry {
 
 	return &QueueEntry{
 		ID:     id,
+		OnHold: onHold,
 		Size:   size,
 		Date:   t,
 		Sender: sender,