Make ⌘S open discard confirmation when there is nothing to merge

mac/Sources/Byre/Switcher.swift

@@ -36,7 +36,7 @@ func runGo(_ key: String, _ store: Store, _ overlays: Overlays) {
             break
         }
         Task {
-            if let task = store.findTask(taskId), task.state == .discardSuggested {
+            if let task = store.findTask(taskId), task.status == .active, task.state == .discardSuggested || (task.mergeFacts.unmergedCommits == 0 && task.mergeFacts.unmergedFiles == 0) {
                 await confirmDiscard(task, store, overlays)
                 return
             }
@@ -80,7 +80,7 @@ private let shortcuts: [(String, [(String, String)])] = [
         ("⌘T", "Show every project's active tasks"),
         ("⌘P", "Show the current project's dashboard"),
         ("⌘L", "Open the Lead tab and its composer, closing any view opened over a pane"),
-        ("⌘S", "Merge the right pane's task, or discard it when the agent suggests discarding"),
+        ("⌘S", "Merge the right pane's task, or discard it when the agent suggests discarding or there is nothing to merge"),
         ("⌘[ ⌘]", "Bring the previous or next server's window forward"),
         ("⌘/", "Show these shortcuts"),
         ("Esc", "Close the switcher, a dialog, or a view opened over a pane"),