Initial clean commit

Example/SellyCloudSDK/VideoCall/SellyCallControlView.h

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+//
+//  SellyCallControlView.h
+//  SellyCloudSDK_Example
+//
+//  Created by Caleb on 12/17/25.
+//  Copyright © 2025 Caleb. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef NS_ENUM(NSUInteger, SellyCallControlAction) {
+    SellyCallControlActionSpeaker,
+    SellyCallControlActionVideo,
+    SellyCallControlActionSwitchCamera,
+    SellyCallControlActionMute,
+    SellyCallControlActionPiP,
+    SellyCallControlActionScreenShare,
+    SellyCallControlActionHangup
+};
+
+@class SellyCallControlView;
+
+@protocol SellyCallControlViewDelegate <NSObject>
+
+- (void)callControlView:(SellyCallControlView *)controlView didTapAction:(SellyCallControlAction)action;
+
+@end
+
+@interface SellyCallControlView : UIView
+
+@property (nonatomic, weak) id<SellyCallControlViewDelegate> delegate;
+
+// 控制按钮显示/隐藏
+@property (nonatomic, assign) BOOL showPiPButton;           // 是否显示画中画按钮（默认 NO）
+@property (nonatomic, assign) BOOL showScreenShareButton;   // 是否显示屏幕分享按钮（默认 NO）
+
+// 更新按钮状态
+- (void)updateSpeakerEnabled:(BOOL)enabled;
+- (void)updateVideoEnabled:(BOOL)enabled;
+- (void)updateMuteEnabled:(BOOL)muted;
+- (void)updatePiPEnabled:(BOOL)enabled;           // 画中画状态
+- (void)updateScreenShareEnabled:(BOOL)enabled;   // 屏幕分享状态
+
+@end
+
+NS_ASSUME_NONNULL_END