diff --git a/internal/ui/app.go b/internal/ui/app.go
index 348ad34a..9aa231f1 100644
--- a/internal/ui/app.go
+++ b/internal/ui/app.go
@@ -841,6 +841,10 @@ func (m *AppModel) updateDashboard(msg tea.KeyMsg) (tea.Model, tea.Cmd) {
 
 	case key.Matches(msg, m.keys.Queue):
 		if task := m.kanban.SelectedTask(); task != nil {
+			// Don't allow queueing if task is already processing
+			if task.Status == db.StatusProcessing {
+				return m, nil
+			}
 			// Immediately update UI for responsiveness
 			task.Status = db.StatusQueued
 			m.updateTaskInList(task)
@@ -965,6 +969,10 @@ func (m *AppModel) updateDetail(msg tea.Msg) (tea.Model, tea.Cmd) {
 
 	// Handle queue/close/retry from detail view
 	if key.Matches(keyMsg, m.keys.Queue) && m.selectedTask != nil {
+		// Don't allow queueing if task is already processing
+		if m.selectedTask.Status == db.StatusProcessing {
+			return m, nil
+		}
 		// Immediately update UI for responsiveness
 		m.selectedTask.Status = db.StatusQueued
 		if m.detailView != nil {
diff --git a/internal/ui/detail.go b/internal/ui/detail.go
index 145f630d..1375c4d7 100644
--- a/internal/ui/detail.go
+++ b/internal/ui/detail.go
@@ -735,7 +735,15 @@ func (m *DetailModel) renderHelp() string {
 		desc string
 	}{
 		{"↑/↓", "scroll"},
-		{"x", "execute"},
+	}
+
+	// Only show execute when task is not currently processing
+	isProcessing := m.task != nil && m.task.Status == db.StatusProcessing
+	if !isProcessing {
+		keys = append(keys, struct {
+			key  string
+			desc string
+		}{"x", "execute"})
 	}
 
 	hasSession := m.hasActiveTmuxSession()
@@ -754,12 +762,23 @@ func (m *DetailModel) renderHelp() string {
 		}{"k", "kill"})
 	}
 
+	keys = append(keys, struct {
+		key  string
+		desc string
+	}{"e", "edit"})
+
+	// Only show retry when task is not currently processing
+	if !isProcessing {
+		keys = append(keys, struct {
+			key  string
+			desc string
+		}{"r", "retry"})
+	}
+
 	keys = append(keys, []struct {
 		key  string
 		desc string
 	}{
-		{"e", "edit"},
-		{"r", "retry"},
 		{"c", "close"},
 		{"d", "delete"},
 		{"q/esc", "back"},