Fix: app quit on playlist close, request screen capture permission, playlist as panel

Sources/MiniPlayerApp.swift

@@ -2,9 +2,20 @@ import SwiftUI
 import AVFoundation
 import Combine
 import SwiftBricks
+#if os(macOS)
+import AppKit
+
+// 防止关闭所有窗口时退出应用
+class AppDel: NSObject, NSApplicationDelegate {
+    func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool { false }
+}
+#endif
 
 @main
 struct MiniPlayerApp: App {
+    #if os(macOS)
+    @NSApplicationDelegateAdaptor(AppDel.self) var appDelegate
+    #endif
     @StateObject private var bridge = PlayerBridge()
     @StateObject private var engine = BricksEngine()
     

Sources/PlayerBridge.swift

@@ -434,16 +434,19 @@ final class PlayerBridge: ObservableObject {
         if let win = playlistWindow, win.isVisible {
             win.close(); playlistWindow = nil; return
         }
-        let win = NSWindow(
+        let panel = NSPanel(
             contentRect: NSRect(x: 0, y: 0, width: 400, height: 500),
-            styleMask: [.titled, .closable, .resizable], backing: .buffered, defer: false
+            styleMask: [.titled, .closable, .resizable, .utilityWindow], backing: .buffered, defer: false
         )
-        win.title = "\(L.playlist) (\(queue.count))"
-        win.isReleasedWhenClosed = false
-        win.center()
-        win.contentView = NSHostingView(rootView: PlaylistWindowView(bridge: self))
-        win.makeKeyAndOrderFront(nil)
-        playlistWindow = win
+        panel.title = "\(L.playlist) (\(queue.count))"
+        panel.isReleasedWhenClosed = false
+        panel.isMovableByWindowBackground = true
+        panel.hidesOnDeactivate = false
+        panel.becomesKeyOnlyIfNeeded = true
+        panel.center()
+        panel.contentView = NSHostingView(rootView: PlaylistWindowView(bridge: self))
+        panel.makeKeyAndOrderFront(NSApp)
+        playlistWindow = panel
         #else
         showPlaylistSheet.toggle()
         #endif

Sources/ScreenRecorder.swift

@@ -104,9 +104,11 @@ final class ScreenRecorder: NSObject, AVCaptureFileOutputRecordingDelegate {
         self.fileOutput = output
         
         // 请求屏幕录制权限（macOS 10.15+）
-        // CGPreflightScreenCaptureAccess 在首次调用时触发权限弹窗
+        // CGRequestScreenCaptureAccess 在首次调用时触发权限弹窗
         #if canImport(ScreenCaptureKit)
-        CGPreflightScreenCaptureAccess()
+        if !CGPreflightScreenCaptureAccess() {
+            CGRequestScreenCaptureAccess()
+        }
         #endif
         
         return true