fix(sdk): 完善初始化异常处理和日志记录

- 在 XuqmInitializerProvider 中添加 autoInitialize 失败时的错误日志记录
- 在 autoInitialize 方法中添加许可证文件缺失时的详细错误日志
- 添加包名匹配失败时的错误日志记录
- 添加许可证读取成功时的调试日志
- 新增 listAssets 辅助方法用于列出资产目录文件

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

@@ -44,16 +44,36 @@ object XuqmSDK {
      */
     fun autoInitialize(context: Context, logLevel: LogLevel = LogLevel.WARN) {
         val licenseData = readLicenseFileData(context)
-            ?: throw IllegalStateException(
+        if (licenseData == null) {
+            android.util.Log.e(
+                "XuqmSDK",
+                "[autoInitialize] License file not found or unreadable. " +
+                    "Expected assets/xuqm/license.xuqm or assets/xuqm/*.xuqmlicense. " +
+                    "Actual files in assets/xuqm/: ${listAssets(context, "xuqm")}",
+            )
+            throw IllegalStateException(
                 "No license file found in assets/xuqm/. " +
                     "Download license.xuqm from the tenant platform and place it in src/main/assets/xuqm/."
             )
+        }
         val appKey = licenseData.first
         val serverUrl = licenseData.second
         val licensePackageName = licenseData.third
-
         val localPackageName = context.packageName
+
+        android.util.Log.d(
+            "XuqmSDK",
+            "[autoInitialize] License read OK — " +
+                "appKey=${appKey.take(8)}***, serverUrl=$serverUrl, " +
+                "licensePackageName=$licensePackageName, localPackageName=$localPackageName",
+        )
+
         if (licensePackageName != null && licensePackageName.isNotBlank() && licensePackageName != localPackageName) {
+            android.util.Log.e(
+                "XuqmSDK",
+                "[autoInitialize] Package name mismatch — " +
+                    "license expects '$licensePackageName', app running as '$localPackageName'.",
+            )
             throw IllegalStateException(
                 "License package name mismatch: license=$licensePackageName, local=$localPackageName. " +
                     "Please download the correct license file for this app."
@@ -63,6 +83,9 @@ object XuqmSDK {
         initialize(context, appKey, serverUrl, logLevel)
     }
 
+    private fun listAssets(context: Context, dir: String): String =
+        runCatching { context.assets.list(dir)?.toList().toString() }.getOrDefault("(error listing)")
+
     /**
      * Manual initialization without license file.
      * The SDK will validate the appKey against the server by calling /api/sdk/config

sdk-core/src/main/java/com/xuqm/sdk/internal/XuqmInitializerProvider.kt

@@ -18,6 +18,13 @@ class XuqmInitializerProvider : ContentProvider() {
             if (!XuqmSDK.isInitialized()) {
                 XuqmSDK.autoInitialize(ctx)
             }
+        }.onFailure { e ->
+            android.util.Log.e(
+                "XuqmSDK",
+                "[XuqmInitializerProvider] autoInitialize failed — SDK will be uninitialized. " +
+                    "Cause: ${e.javaClass.simpleName}: ${e.message}",
+                e,
+            )
         }
         return true
     }