fix: 修复屏幕录制权限频繁掉落的根因问题

- MediaProjectionHolder添加全局创建锁safeGetOrCreateProjection()
- 所有创建点统一通过安全入口，禁止直接调用getMediaProjection()
- 重复创建新实例会导致系统stop旧实例触发onStop死循环
- Android15MediaProjectionManager/SmartMediaProjectionManager的onStop回调添加isCreating检查
- RemoteControlForegroundService备用方案改用安全创建入口
- AccessibilityRemoteService静默恢复改用安全创建入口
- 添加最小创建间隔5秒防止短时间内重复创建

app/src/main/java/com/hikoncont/manager/ScreenCaptureManager.kt

@@ -2329,14 +2329,14 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
     /**
      * Android 15：重新生成MediaProjection以解决单次令牌限制
      * 
-     * 🚨 核心修复：优先从 Holder 获取已有对象，避免重复创建
+     * 🚨 核心修复：只从 Holder 获取已有对象，禁止重复创建
      */
     private fun regenerateMediaProjectionForAndroid15(): Boolean {
         return try {
             if (Build.VERSION.SDK_INT >= 35) {
                 Log.i(TAG, "🔄 Android 15：尝试获取可用的MediaProjection")
                 
-                // ✅ 优先从 Holder 获取已有对象
+                // 只从 Holder 获取已有对象
                 val existingProjection = MediaProjectionHolder.getMediaProjection()
                 if (existingProjection != null) {
                     Log.i(TAG, "✅ Holder中已有有效MediaProjection，直接复用")
@@ -2344,29 +2344,12 @@ class ScreenCaptureManager(private val service: AccessibilityRemoteService) {
                     return true
                 }
                 
-                // Holder 中无有效对象，从权限数据创建（仅一次）
-                val permissionData = MediaProjectionHolder.getPermissionData()
-                if (permissionData != null) {
-                    val (resultCode, resultData) = permissionData
-                    if (resultData != null) {
-                        val accessibilityService = com.hikoncont.service.AccessibilityRemoteService.getInstance()
-                        val android15Manager = accessibilityService?.getAndroid15MediaProjectionManager()
-                        
-                        val newProjection = android15Manager?.createMediaProjectionWithCallback(resultCode, resultData)
-                        if (newProjection != null) {
-                            mediaProjection = newProjection
-                            MediaProjectionHolder.setMediaProjection(newProjection)
-                            Log.i(TAG, "✅ Android 15 MediaProjection重新生成成功")
-                            return true
-                        }
-                        Log.e(TAG, "❌ Android 15 MediaProjection重新生成失败")
-                    }
-                }
-                Log.e(TAG, "❌ Android 15重新生成失败：无有效权限数据")
+                // 🚨 不再重新创建！避免死循环
+                Log.w(TAG, "❌ Holder中无有效MediaProjection，等待权限重新授予")
             }
             false
         } catch (e: Exception) {
-            Log.e(TAG, "❌ Android 15重新生成MediaProjection异常", e)
+            Log.e(TAG, "❌ Android 15获取MediaProjection异常", e)
             false
         }
     }