fix(file): 修复文件下载完成后通知显示问题

- 使用capturedNotifId替换notifId变量
- 先取消原有通知再创建新通知
- 重新构建通知内容包括标题和完成状态
- 添加自动取消功能
- 优化通知图标和文本显示逻辑

sdk-core/src/main/java/com/xuqm/sdk/file/FileSDK.kt

@@ -208,17 +208,20 @@ object FileSDK {
                 onProgress(progress)
             }
         } finally {
-            notifId?.let { id ->
-                notifBuilder
-                    ?.setOngoing(false)
-                    ?.setProgress(0, 0, false)
-                    ?.setSmallIcon(android.R.drawable.stat_sys_download_done)
-                    ?.setContentText(context.getString(android.R.string.ok))
-                    ?.also {
-                        if (NotificationManagerCompat.from(context).areNotificationsEnabled()) {
-                            NotificationManagerCompat.from(context).notify(id, it.build())
-                        }
-                    }
+            capturedNotifId?.let { id ->
+                val nm = NotificationManagerCompat.from(context)
+                nm.cancel(id)
+                if (nm.areNotificationsEnabled()) {
+                    nm.notify(
+                        id,
+                        NotificationCompat.Builder(context, DOWNLOAD_CHANNEL_ID)
+                            .setSmallIcon(android.R.drawable.stat_sys_download_done)
+                            .setContentTitle(notificationTitle)
+                            .setContentText("下载完成：$resolvedName")
+                            .setAutoCancel(true)
+                            .build(),
+                    )
+                }
             }
         }
         target