release: v1.6

fix: 彻底禁用桥接器 socket 超时（start(0)），restic 密钥生成在慢设备上可超过 5 分钟
fix: ConfigViewModel.initResticRepo 添加 15 分钟超时兜底
fix: SMB blob 上传校验大小一致性（重读远端文件验证）
fix: MissingAlgoProvider 合并 MD4 + AESCMAC 算法注入
fix: NanoHTTPD socket timeout = 0（无限超时）避免 blob 体读取中断
feat: ConfigViewModel initGuard 防重复初始化
feat: SMB 传输缓存复用避免跨桥接器认证重建

app/build.gradle

@@ -26,8 +26,8 @@ android {
         applicationId "com.example.androidbackupgui"
         minSdk 24
         targetSdk 34
-        versionCode 6
-        versionName "1.5"
+        versionCode 7
+        versionName "1.6"
     }
     buildFeatures {
         viewBinding true

app/src/main/java/com/example/androidbackupgui/backup/RestBridgeRunner.kt

@@ -68,7 +68,7 @@ class RestBridgeRunner {
         val bridge = ResticRestBridge(transport, remoteBase, cacheDir)
 
         try {
-            bridge.start(300_000)
+            bridge.start(0)
             val port = bridge.listeningPort
             if (port < 0) {
                 throw IllegalStateException("REST bridge failed to bind a port")

app/src/main/java/com/example/androidbackupgui/ui/ConfigViewModel.kt

@@ -18,6 +18,7 @@ import kotlinx.coroutines.flow.asSharedFlow
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
+import kotlinx.coroutines.withTimeoutOrNull
 import java.io.File
 import java.util.concurrent.atomic.AtomicBoolean
 
@@ -189,12 +190,21 @@ class ConfigViewModel(application: Application) : AndroidViewModel(application)
         viewModelScope.launch {
             try {
                 _operationEvents.emit(OperationEvent.InitStarted)
-                val result = ResticWrapper.init(form.repo, form.password,
-                    backend = form.backend, backendUrl = form.backendUrl,
-                    backendUser = form.backendUser, backendPass = form.backendPass,
-                    backendShare = form.backendShare,
-                )
-                if (result.isSuccess) {
+                val result = withTimeoutOrNull(15 * 60 * 1000L) {
+                    ResticWrapper.init(form.repo, form.password,
+                        backend = form.backend, backendUrl = form.backendUrl,
+                        backendUser = form.backendUser, backendPass = form.backendPass,
+                        backendShare = form.backendShare,
+                    )
+                }
+                if (result == null) {
+                    _operationEvents.emit(OperationEvent.InitFailed)
+                    Log.w(TAG, "initResticRepo timed out after 15 minutes")
+                    _uiState.update { it.copy(resticStatus = it.resticStatus.copy(
+                        message = "初始化超时（15分钟），请检查网络/SMB 服务器是否正常"
+                    ))}
+                    refreshResticStatus(form)
+                } else if (result.isSuccess) {
                     _operationEvents.emit(OperationEvent.InitCompleted)
                     _uiState.update { it.copy(resticStatus = it.resticStatus.copy(
                         message = "仓库初始化成功: ${form.repo}"