ui: restore visible caption Off and compact settings controls

Checks/app-startup.py

@@ -203,6 +203,14 @@ def check_cli_instances(root, app, fixtures):
             pid = next(pid for pid in states if pid not in previous)
             states = input_request(pid, count + index + 1, lambda state: state["status"] == 2,
                                    "resolved GUI pauses independently after decoded startup", action="pause")
+            states = input_request(pid, count + index + 1,
+                                   lambda state: state["selectedSubtitle"] == -1 and not state["subtitleText"],
+                                   "visible native Off item disables rendered captions", action="caption", label="Off")
+            states = input_request(pid, count + index + 1,
+                                   lambda state: state["selectedSubtitle"] == 0
+                                   and state["subtitleText"] == f"Independent subtitle {index}",
+                                   "visible native track item restores rendered captions",
+                                   action="caption", label=f"Track {index} (en)")
             wait_report(report, [identity], lambda rows: any(
                 row["event"] == "progress" and row["completion_eligible"] for row in rows),
                 "resolved GUI owns v2 stable-identity reporting after CLI exit")

Checks/app-startup.swift

@@ -90,6 +90,14 @@ private enum CLIInstanceCheck {
         }
     }
 
+    static func captionSelector(in view: NSView) -> NSPopUpButton? {
+        if let selector = view as? NSPopUpButton, selector.toolTip == "Subtitles" { return selector }
+        for child in view.subviews {
+            if let selector = captionSelector(in: child) { return selector }
+        }
+        return nil
+    }
+
     static func run(_ configuration: URL) {
         let settings = try! JSONSerialization.jsonObject(with: Data(contentsOf: configuration)) as! [String: String]
         let directory = URL(fileURLWithPath: settings["directory"]!, isDirectory: true)
@@ -139,6 +147,20 @@ private enum CLIInstanceCheck {
                         switch action {
                         case "youtube":
                             model.openYouTube(command["url"] as! String)
+                        case "caption":
+                            guard let view = window.contentView, let selector = captionSelector(in: view),
+                                  let cell = selector.cell as? NSPopUpButtonCell, let menu = selector.menu else {
+                                fatalError("Native captions selector is missing")
+                            }
+                            cell.attachPopUp(withFrame: selector.bounds, in: selector)
+                            menu.update()
+                            let label = command["label"] as! String
+                            guard let item = menu.items.first(where: { $0.title == label }) else {
+                                fatalError("Requested native subtitle selection is missing")
+                            }
+                            precondition(!item.isHidden && item.isEnabled, "Subtitle selection must be visible and enabled")
+                            cell.dismissPopUp()
+                            precondition(selectMenuItem(label, in: menu), "Native subtitle selection must be actionable")
                         case "seek":
                             let position = command["position"] as! Double
                             precondition(model.seekRelative(position - model.state.position), "Native seek must be accepted")