feat(sdk): 扩展用户信息功能并增强文件下载权限管理

- 扩展 setUserInfo 方法支持用户昵称和头像参数
- 重构 XuqmUserInfo 数据类使用 id 替代 userId 字段
- 更新 UpdateSDK 中用户ID解析逻辑适配新字段名
- 为 Android 11+ 设备添加 MANAGE_EXTERNAL_STORAGE 权限检查
- 实现下载暂停和恢复机制处理存储权限请求流程
- 添加权限说明对话框指导用户完成设置授权
- 集成生命周期观察者自动续传获得权限后的下载任务

sdk-core/src/main/java/com/xuqm/sdk/XuqmSDK.kt

@@ -167,10 +167,14 @@ object XuqmSDK {
      * 设置用户信息，供 update / push / license 等服务使用（灰度发布、精准推送等）。
      * IM 服务需要独立调用 [login] 完成鉴权，[setUserInfo] 对 IM socket 连接无效。
      *
-     * @param userId 用户标识，传 null 则清除
+     * @param id 用户唯一标识，传 null 或空字符串则清除用户信息
+     * @param name 用户显示名称（可选）
+     * @param avatar 用户头像 URL（可选）
      */
-    fun setUserInfo(userId: String?) {
-        userInfoValue = userId?.takeIf { it.isNotBlank() }?.let { XuqmUserInfo(it) }
+    fun setUserInfo(id: String?, name: String? = null, avatar: String? = null) {
+        userInfoValue = id?.takeIf { it.isNotBlank() }?.let {
+            XuqmUserInfo(id = it, name = name, avatar = avatar)
+        }
     }
 
     suspend fun login(

sdk-core/src/main/java/com/xuqm/sdk/XuqmUserInfo.kt

@@ -1,5 +1,10 @@
 package com.xuqm.sdk
 
 data class XuqmUserInfo(
-    val userId: String,
+    /** 用户唯一标识（必填），用于灰度发布、精准推送等 */
+    val id: String,
+    /** 用户显示名称（可选） */
+    val name: String? = null,
+    /** 用户头像 URL（可选） */
+    val avatar: String? = null,
 )

sdk-update/src/main/java/com/xuqm/sdk/update/UpdateSDK.kt

@@ -25,7 +25,7 @@ object UpdateSDK {
      * 优先级：[XuqmSDK.userInfo]?.userId > [XuqmSDK.currentLoginSession]?.userId
      */
     private fun resolveUserId(): String? {
-        return XuqmSDK.userInfo?.userId ?: XuqmSDK.currentLoginSession?.userId
+        return XuqmSDK.userInfo?.id ?: XuqmSDK.currentLoginSession?.userId
     }
 
     private fun normalizeDownloadUrl(rawUrl: String?): String? {

sdk-webview/src/main/java/com/xuqm/sdk/webview/XWebViewView.kt

@@ -33,10 +33,13 @@ import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalLifecycleOwner
 import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.ui.viewinterop.AndroidView
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LifecycleEventObserver
 import androidx.core.content.ContextCompat
 import androidx.core.content.FileProvider
 import com.xuqm.sdk.file.FileSDK
@@ -225,6 +228,8 @@ fun XWebViewView(
     var currentUrl by remember { mutableStateOf<String?>(config.url.ifBlank { null }) }
     val coroutineScope = rememberCoroutineScope()
     var showImageSourceDialog by remember { mutableStateOf(false) }
+    var showStoragePermissionDialog by remember { mutableStateOf(false) }
+    val pendingUrlDownload = remember { mutableStateOf<Pair<String, String?>?>(null) }
 
     val notificationPermissionLauncher = rememberLauncherForActivityResult(
         ActivityResultContracts.RequestPermission()
@@ -249,6 +254,17 @@ fun XWebViewView(
             "download" -> {
                 val url = payload.optString("url").takeIf { it.isNotBlank() } ?: return@handler
                 val filename = payload.optString("filename").takeIf { it.isNotBlank() }
+                // On API 30+, writing to public Downloads requires MANAGE_EXTERNAL_STORAGE.
+                // Show a rationale dialog; after the user grants permission and returns, the
+                // lifecycle observer will resume the download automatically.
+                if (config.downloadDestination == FileDownloadDestination.PublicDownloads &&
+                    Build.VERSION.SDK_INT >= Build.VERSION_CODES.R &&
+                    !FileSDK.isManageStorageGranted(context)
+                ) {
+                    pendingUrlDownload.value = url to filename
+                    showStoragePermissionDialog = true
+                    return@handler
+                }
                 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU &&
                     config.downloadNotificationTitle != null &&
                     ContextCompat.checkSelfPermission(context, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED
@@ -379,6 +395,52 @@ fun XWebViewView(
         }
     }
 
+    // When returning from the MANAGE_EXTERNAL_STORAGE settings page, resume pending download.
+    val lifecycleOwner = LocalLifecycleOwner.current
+    DisposableEffect(lifecycleOwner) {
+        val observer = LifecycleEventObserver { _, event ->
+            if (event == Lifecycle.Event.ON_RESUME) {
+                val pd = pendingUrlDownload.value
+                if (pd != null && FileSDK.isManageStorageGranted(context)) {
+                    val (url, filename) = pd
+                    pendingUrlDownload.value = null
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU &&
+                        config.downloadNotificationTitle != null &&
+                        ContextCompat.checkSelfPermission(context, Manifest.permission.POST_NOTIFICATIONS) != PackageManager.PERMISSION_GRANTED
+                    ) {
+                        notificationPermissionLauncher.launch(Manifest.permission.POST_NOTIFICATIONS)
+                    }
+                    coroutineScope.launch(Dispatchers.IO) {
+                        runCatching {
+                            FileSDK.download(
+                                context = context,
+                                downloadUrl = url,
+                                fileName = filename,
+                                destination = config.downloadDestination,
+                                notificationTitle = config.downloadNotificationTitle,
+                            ) { progress ->
+                                mainHandler.post {
+                                    dispatchDownloadEvent("__xwvDownloadProgress", url, ",progress:$progress")
+                                }
+                            }
+                        }.onSuccess { file ->
+                            withContext(Dispatchers.Main) {
+                                dispatchDownloadEvent("__xwvDownloadDone", url, ",success:true")
+                                FileSDK.openFile(context, file)
+                            }
+                        }.onFailure { e ->
+                            withContext(Dispatchers.Main) {
+                                dispatchDownloadEvent("__xwvDownloadDone", url, ",success:false,error:'${e.message?.escapeJs()}'")
+                            }
+                        }
+                    }
+                }
+            }
+        }
+        lifecycleOwner.lifecycle.addObserver(observer)
+        onDispose { lifecycleOwner.lifecycle.removeObserver(observer) }
+    }
+
     val launchCamera: () -> Unit = {
         if (ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
             runCatching {
@@ -496,6 +558,29 @@ fun XWebViewView(
         },
     )
 
+    if (showStoragePermissionDialog) {
+        AlertDialog(
+            onDismissRequest = {
+                showStoragePermissionDialog = false
+                pendingUrlDownload.value = null
+            },
+            title = { Text("需要存储权限") },
+            text = { Text("下载文件需要"所有文件访问权限"，请在设置中授权后将自动继续下载。") },
+            confirmButton = {
+                TextButton(onClick = {
+                    showStoragePermissionDialog = false
+                    FileSDK.requestManageStorageIntent(context)?.let { context.startActivity(it) }
+                }) { Text("前往设置") }
+            },
+            dismissButton = {
+                TextButton(onClick = {
+                    showStoragePermissionDialog = false
+                    pendingUrlDownload.value = null
+                }) { Text("取消") }
+            },
+        )
+    }
+
     if (showImageSourceDialog) {
         AlertDialog(
             onDismissRequest = {