1. 保活通知状态机：断开/断网时必然清除（stopForeground REMOVE + cancel）；断网重连时显示“重连中”，重连成功恢复“已连接”，重连失败/放弃/服务器主动断开则清除

2. 导出崩溃日志改为 .log 文件附件（注册 FileProvider 分享，不再纯文本复制）
3. 版本号提升至 1.0.11（versionCode 11）

android/app/build.gradle.kts

@@ -13,8 +13,8 @@ android {
         applicationId = "com.tsmobile.app"
         minSdk = 26
         targetSdk = 35
-        versionCode = 9
+        versionCode = 11
-        versionName = "1.0.9"
+        versionName = "1.0.11"
     }
 
     signingConfigs {

android/app/src/main/AndroidManifest.xml

@@ -48,6 +48,17 @@
             android:name=".ConnectionService"
             android:foregroundServiceType="dataSync"
             android:exported="false" />
+
+        <!-- FileProvider：导出/分享崩溃日志文件 -->
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/file_paths" />
+        </provider>
     </application>
 
 </manifest>

android/app/src/main/java/com/tsmobile/app/ConnectionService.kt

@@ -56,6 +56,52 @@ class ConnectionService : LifecycleService() {
         fun stop(context: Context) {
             android.util.Log.i(TAG, "Stopping connection service")
             context.stopService(Intent(context, ConnectionService::class.java))
+            // 兜底：立即取消保活通知，避免服务已停但通知残留（部分 ROM 不会随 stopService 移除前台通知）
+            cancelNotification(context)
+        }
+
+        /** 移除保活通知（前台通知的兜底清理） */
+        private fun cancelNotification(context: Context) {
+            try {
+                (context.getSystemService(NotificationManager::class.java) as NotificationManager)
+                    .cancel(NOTIFICATION_ID)
+            } catch (e: Exception) {
+                android.util.Log.w(TAG, "Failed to cancel keepalive notification", e)
+            }
+        }
+
+        /**
+         * 更新保活通知（用于“重连中”等状态变化）。
+         * 服务仍在运行时，会更新前台通知；否则投递一条普通通知。
+         */
+        fun update(context: Context, title: String, contentText: String) {
+            android.util.Log.i(TAG, "Updating keepalive notification: $title")
+            try {
+                (context.getSystemService(NotificationManager::class.java) as NotificationManager)
+                    .notify(NOTIFICATION_ID, buildNotification(context, title, contentText))
+            } catch (e: Exception) {
+                android.util.Log.w(TAG, "Failed to update keepalive notification", e)
+            }
+        }
+
+        private fun buildNotification(context: Context, title: String, contentText: String): Notification {
+            val pendingIntent = PendingIntent.getActivity(
+                context,
+                0,
+                Intent(context, MainActivity::class.java).apply {
+                    flags = Intent.FLAG_ACTIVITY_SINGLE_TOP
+                },
+                PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT,
+            )
+            return NotificationCompat.Builder(context, CHANNEL_ID)
+                .setSmallIcon(android.R.drawable.ic_dialog_info)
+                .setContentTitle(title)
+                .setContentText(contentText)
+                .setPriority(NotificationCompat.PRIORITY_LOW)
+                .setOngoing(true)
+                .setShowWhen(false)
+                .setContentIntent(pendingIntent)
+                .build()
         }
 
         /**
@@ -106,7 +152,7 @@ class ConnectionService : LifecycleService() {
         } else {
             0
         }
-        ServiceCompat.startForeground(this, NOTIFICATION_ID, buildNotification(serverName), serviceType)
+        ServiceCompat.startForeground(this, NOTIFICATION_ID, buildNotification("已连接到 TeamSpeak", serverName), serviceType)
 
         android.util.Log.i(TAG, "Foreground service started for $serverName")
         return Service.START_NOT_STICKY
@@ -114,6 +160,9 @@ class ConnectionService : LifecycleService() {
 
     override fun onDestroy() {
         releaseLocks()
+        // 显式移除前台通知，确保断开/停止服务后通知被清除，而不是残留“已连接”
+        ServiceCompat.stopForeground(this, ServiceCompat.STOP_FOREGROUND_REMOVE)
+        cancelNotification(this)
         super.onDestroy()
         android.util.Log.i(TAG, "Connection service destroyed, locks released")
     }
@@ -180,24 +229,6 @@ class ConnectionService : LifecycleService() {
         nm.createNotificationChannel(channel)
     }
 
-    private fun buildNotification(serverName: String): Notification {
+    private fun buildNotification(title: String, contentText: String): Notification =
-        val pendingIntent = PendingIntent.getActivity(
+        buildNotification(this, title, contentText)
-            this,
-            0,
-            Intent(this, MainActivity::class.java).apply {
-                flags = Intent.FLAG_ACTIVITY_SINGLE_TOP
-            },
-            PendingIntent.FLAG_IMMUTABLE or PendingIntent.FLAG_UPDATE_CURRENT,
-        )
-
-        return NotificationCompat.Builder(this, CHANNEL_ID)
-            .setSmallIcon(android.R.drawable.ic_dialog_info)
-            .setContentTitle("已连接到 TeamSpeak")
-            .setContentText(serverName)
-            .setPriority(NotificationCompat.PRIORITY_LOW)
-            .setOngoing(true)
-            .setShowWhen(false)
-            .setContentIntent(pendingIntent)
-            .build()
-    }
 }

android/app/src/main/java/com/tsmobile/app/ui/components/Bbcode.kt

@@ -0,0 +1,169 @@
+package com.tsmobile.app.ui.components
+
+import android.util.Log
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.AnnotatedString
+import androidx.compose.ui.text.LinkAnnotation
+import androidx.compose.ui.text.SpanStyle
+import androidx.compose.ui.text.TextLinkStyles
+import androidx.compose.ui.text.font.FontStyle
+import androidx.compose.ui.text.withLink
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.text.style.TextDecoration
+import androidx.compose.ui.unit.TextUnit
+import androidx.compose.ui.unit.sp
+
+/**
+ * 轻量 BBCode → AnnotatedString 解析器，用于服务器欢迎消息 / 频道描述等富文本。
+ *
+ * 支持标签：
+ *  - [b] [i] [u] [s] [color=#RRGGBB|name] [size=N] [url=http://...][url]
+ *
+ * 不支持（原样保留内容、忽略标签）：[img] [list] [table] 等。
+ * 未知标签会被安全忽略，不会因为畸形 BBCode 崩溃。
+ */
+object Bbcode {
+
+    private data class RunStyle(
+        val bold: Boolean = false,
+        val italic: Boolean = false,
+        val underline: Boolean = false,
+        val strike: Boolean = false,
+        val color: Color? = null,
+        val size: TextUnit? = null,
+        val url: String? = null,
+    )
+
+    private val tagRegex = Regex("""\[/?([A-Za-z]+)(?:=([^\]]*))?]""")
+
+    /** 链接默认颜色（Material 蓝） */
+    private val linkColor = Color(0xFF1A73E8)
+
+    fun parse(raw: String): AnnotatedString {
+        return try {
+            parseInternal(raw)
+        } catch (e: Exception) {
+            // BBCode 解析绝不应因畸形输入让 App 崩溃：任何异常都退化为纯文本
+            Log.d("Bbcode", "parse failed, raw=${raw.take(120)}", e)
+            AnnotatedString(raw)
+        }
+    }
+
+    private fun parseInternal(raw: String): AnnotatedString {
+        val builder = AnnotatedString.Builder()
+        val stack = ArrayDeque<RunStyle>()
+        var current = RunStyle()
+
+        var i = 0
+        while (i < raw.length) {
+            if (raw[i] == '[') {
+                val m = tagRegex.find(raw, i)
+                if (m != null && m.range.first == i) {
+                    val isClose = m.value.getOrNull(1) == '/'
+                    // 用 getOrNull 防 Kotlin Regex groupValues 越界（No group N）导致崩溃
+                    val tag = m.groupValues.getOrNull(1)?.lowercase() ?: ""
+                    val value = m.groupValues.getOrNull(2)?.trim()?.ifBlank { null }
+
+                    if (isClose) {
+                        current = stack.removeLastOrNull() ?: current
+                    } else {
+                        // [br] 作为换行处理（无闭合标签）
+                        if (tag == "br") {
+                            builder.append("\n")
+                            i = m.range.last + 1
+                            continue
+                        }
+                        stack.addLast(current)
+                        current = when (tag) {
+                            "b" -> current.copy(bold = true)
+                            "i" -> current.copy(italic = true)
+                            "u" -> current.copy(underline = true)
+                            "s" -> current.copy(strike = true)
+                            "color" -> current.copy(color = parseColor(value))
+                            "size" -> current.copy(size = parseSize(value))
+                            "url" -> current.copy(url = value ?: current.url)
+                            else -> current
+                        }
+                    }
+                    i = m.range.last + 1
+                    continue
+                }
+            }
+
+            // 累积普通文本，直到下一个 '['
+            val next = raw.indexOf('[', i)
+            val text = if (next < 0) raw.substring(i) else raw.substring(i, next)
+            if (text.isNotEmpty()) {
+                appendStyled(builder, current, text)
+                i += text.length
+            } else {
+                // 当前字符是 '[' 但不是合法 BBCode 标签（如 [歌名] 等中文占位符）：
+                // 按普通字符保留，避免被吞掉
+                appendStyled(builder, current, raw[i].toString())
+                i++
+            }
+        }
+        return builder.toAnnotatedString()
+    }
+
+    private fun appendStyled(builder: AnnotatedString.Builder, style: RunStyle, text: String) {
+        val link = style.url
+        if (link != null) {
+            // 链接：可点击（Text 通过 LocalUriHandler 打开）+ 下划线 + 链接色
+            builder.withLink(
+                LinkAnnotation.Url(
+                    link,
+                    TextLinkStyles(style = SpanStyle(color = linkColor, textDecoration = TextDecoration.Underline)),
+                ),
+            ) {
+                // 链接内部仍保留 b/i/颜色/字号等基础格式
+                pushStyle(styleSpan(style.copy(url = null, color = style.color)))
+                append(text)
+                pop()
+            }
+        } else {
+            builder.pushStyle(styleSpan(style))
+            builder.append(text)
+            builder.pop()
+        }
+    }
+
+    private fun styleSpan(s: RunStyle): SpanStyle {
+        val decoration = when {
+            s.underline -> TextDecoration.Underline
+            s.strike -> TextDecoration.LineThrough
+            else -> null
+        }
+        return SpanStyle(
+            fontWeight = if (s.bold) FontWeight.Bold else null,
+            fontStyle = if (s.italic) FontStyle.Italic else null,
+            textDecoration = decoration,
+            color = s.color ?: Color.Unspecified,
+            fontSize = s.size ?: TextUnit.Unspecified,
+        )
+    }
+
+    private fun parseColor(value: String?): Color? {
+        if (value.isNullOrBlank()) return null
+        val v = value.removePrefix("#").removePrefix("0x")
+        if (v.length == 6) {
+            return try { Color(("FF" + v).toLong(16)) } catch (_: Exception) { null }
+        }
+        if (v.length == 8) {
+            return try { Color(v.toLong(16)) } catch (_: Exception) { null }
+        }
+        return when (value.lowercase()) {
+            "red" -> Color(0xFFFF0000); "green" -> Color(0xFF00FF00)
+            "blue" -> Color(0xFF0000FF); "yellow" -> Color(0xFFFFFF00)
+            "white" -> Color(0xFFFFFFFF); "black" -> Color(0xFF000000)
+            "orange" -> Color(0xFFFFA500); "purple" -> Color(0xFF800080)
+            "grey", "gray" -> Color(0xFF808080)
+            else -> null
+        }
+    }
+
+    private fun parseSize(value: String?): TextUnit? {
+        val n = value?.toFloatOrNull() ?: return null
+        return n.coerceIn(6f, 40f).sp
+    }
+}

android/app/src/main/java/com/tsmobile/app/ui/components/ChannelDetailCard.kt

@@ -63,7 +63,7 @@ private fun ChannelInfoSection(channelDetail: ChannelDetailInfo) {
         if (channelDetail.description.isNotEmpty()) {
             Spacer(Modifier.height(UiTokens.Spacing.Small))
             Text("描述", style = MaterialTheme.typography.labelMedium, color = MaterialTheme.colorScheme.onSurfaceVariant)
-            Text(channelDetail.description, style = MaterialTheme.typography.bodySmall)
+            Text(Bbcode.parse(channelDetail.description), style = MaterialTheme.typography.bodySmall)
         }
     }
 }

android/app/src/main/java/com/tsmobile/app/ui/components/MessageList.kt

@@ -27,22 +27,30 @@ fun MessageList(
     val listState = rememberLazyListState()
     val coroutineScope = rememberCoroutineScope()
 
+    // 统一数据源：去重（兜底防重复 key 崩溃），后续都用 messageItems，避免 count 与 items 不一致
+    val messageItems = messages.distinctBy { it.id }
+
     // 是否在底部（用于判断是否自动滚动）
     val isAtBottom by remember {
         derivedStateOf {
             val lastVisibleItem = listState.layoutInfo.visibleItemsInfo.lastOrNull()
-            lastVisibleItem != null && lastVisibleItem.index >= messages.size - 2
+            lastVisibleItem != null && lastVisibleItem.index >= messageItems.size - 2
         }
     }
 
     // 新消息到达时自动滚动到底部
-    LaunchedEffect(messages.size) {
+    LaunchedEffect(messageItems.size) {
-        val count = messages.size
+        val count = messageItems.size
         if (count > 0) {
+            // 先等当前帧（measure/layout）完成再滚动，避免在 LazyColumn measure 期间操作
+            // scrollState 触发 "layout state is not idle before measure starts" 崩溃
+            withFrameNanos { }
             try {
                 listState.animateScrollToItem(count - 1)
             } catch (_: IllegalArgumentException) {
                 // 列表在滚动过程中被清空/缩短（如断线清理会话），忽略即可
+            } catch (_: IllegalStateException) {
+                // scrollState 尚未 idle（measure 竞态/键盘布局变化），忽略本次滚动
             }
         }
     }
@@ -55,7 +63,7 @@ fun MessageList(
             verticalArrangement = Arrangement.spacedBy(8.dp)
         ) {
             items(
-                items = messages,
+                items = messageItems,
                 key = { it.id }
             ) { message ->
                 MessageItem(message = message)
@@ -63,7 +71,7 @@ fun MessageList(
         }
 
         // 用户查看历史消息时，新消息到达显示 "↓ 新消息" 提示条
-        if (!isAtBottom && messages.isNotEmpty()) {
+        if (!isAtBottom && messageItems.isNotEmpty()) {
             Surface(
                 modifier = Modifier
                     .align(Alignment.BottomCenter)
@@ -76,13 +84,17 @@ fun MessageList(
             ) {
                 TextButton(
                     onClick = {
-                        val count = messages.size
+                        val count = messageItems.size
                         if (count > 0) {
                             coroutineScope.launch {
+                                // 等一帧确保布局完成后再滚动
+                                withFrameNanos { }
                                 try {
                                     listState.animateScrollToItem(count - 1)
                                 } catch (_: IllegalArgumentException) {
                                     // 列表在点击瞬间被清空/缩短，忽略即可
+                                } catch (_: IllegalStateException) {
+                                    // scrollState 尚未 idle，忽略本次滚动
                                 }
                             }
                         }

android/app/src/main/java/com/tsmobile/app/ui/components/ServerDetailCard.kt

@@ -3,6 +3,7 @@ package com.tsmobile.app.ui.components
 import android.content.Context
 import android.content.Intent
 import android.widget.Toast
+import androidx.core.content.FileProvider
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.ColumnScope
@@ -103,7 +104,7 @@ fun ServerDetailCard(
                 if (serverInfo != null && serverInfo.welcomeMessage.isNotEmpty()) {
                     SectionCard(title = "欢迎消息") {
                         Text(
-                            text = serverInfo.welcomeMessage,
+                            text = Bbcode.parse(serverInfo.welcomeMessage),
                             style = MaterialTheme.typography.bodySmall,
                         )
                     }
@@ -233,20 +234,26 @@ private fun readCrashLog(context: Context): String {
     return texts.distinct().joinToString("\n\n")
 }
 
-/** 通过系统分享面板导出崩溃日志（无日志时提示）。 */
+/** 通过系统分享面板导出崩溃日志：写入 .log 文件并作为附件分享（非纯文本）。 */
 private fun shareCrashLog(context: Context) {
     val log = readCrashLog(context)
     if (log.isBlank()) {
         Toast.makeText(context, "暂无崩溃日志", Toast.LENGTH_SHORT).show()
         return
     }
+    val file = writeCrashLogToFile(context, log)
+    if (file == null) {
+        Toast.makeText(context, "生成日志文件失败", Toast.LENGTH_SHORT).show()
+        return
+    }
+    val uri = FileProvider.getUriForFile(context, "${context.packageName}.fileprovider", file)
     val send = Intent(Intent.ACTION_SEND).apply {
         type = "text/plain"
         putExtra(Intent.EXTRA_SUBJECT, "TeamSpeak Mobile 崩溃日志")
-        putExtra(Intent.EXTRA_TEXT, log)
+        putExtra(Intent.EXTRA_STREAM, uri)
+        addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
     }
     val chooser = Intent.createChooser(send, "导出崩溃日志")
-    // 若 context 不是 Activity，需 NEW_TASK
     if (context !is android.app.Activity) chooser.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
     try {
         context.startActivity(chooser)
@@ -254,3 +261,15 @@ private fun shareCrashLog(context: Context) {
         Toast.makeText(context, "无法打开分享：${e.message}", Toast.LENGTH_SHORT).show()
     }
 }
+
+/** 将日志写入 cacheDir/logs/tsmobile_crash_<时间戳>.log 文件（供 FileProvider 分享）。 */
+private fun writeCrashLogToFile(context: Context, log: String): File? {
+    return try {
+        val dir = File(context.cacheDir, "logs").apply { mkdirs() }
+        val file = File(dir, "tsmobile_crash_${System.currentTimeMillis()}.log")
+        file.writeText(log)
+        file
+    } catch (e: Exception) {
+        null
+    }
+}

android/app/src/main/java/com/tsmobile/app/ui/components/VoiceCard.kt

@@ -13,6 +13,7 @@ import androidx.compose.material3.*
 import androidx.compose.runtime.*
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
 import androidx.compose.ui.semantics.contentDescription
 import androidx.compose.ui.semantics.semantics
 import androidx.compose.ui.text.font.FontWeight
@@ -178,6 +179,7 @@ private fun MemberRow(
         modifier = Modifier
             .fillMaxWidth()
             .heightIn(min = 64.dp)
+            .clip(RoundedCornerShape(UiTokens.Spacing.Medium))
             .background(containerColor, RoundedCornerShape(UiTokens.Spacing.Medium))
             .combinedClickable(onClick = {}, onLongClick = onLongClick)
             .padding(horizontal = 14.dp, vertical = UiTokens.Spacing.Medium),

android/app/src/main/java/com/tsmobile/app/viewmodel/ChatViewModel.kt

@@ -29,8 +29,9 @@ class ChatViewModel(application: Application) : AndroidViewModel(application) {
         private const val TAG = "ChatViewModel"
         /** 消息送达确认超时（毫秒）：超时未收到回显则标记为 FAILED */
         private const val DELIVERY_TIMEOUT_MS = 10_000L
-        /** 系统消息 ID 计数器，避免同毫秒并发调用产生重复 key */
+        /** 全局消息 ID 递增序列：保证同一毫秒内生成的消息 ID 唯一，
-        private val sysMsgSeq = AtomicLong(0)
+         *  避免 LazyColumn/Row 以 id 为 key 时出现 "Key was already used" 崩溃 */
+        private val msgIdSeq = AtomicLong(0)
     }
 
     // 当前会话的消息列表
@@ -94,7 +95,7 @@ class ChatViewModel(application: Application) : AndroidViewModel(application) {
      */
     fun addSystemMessage(content: String) {
         val message = ChatMessage(
-            id = "sys_${System.currentTimeMillis()}_${sysMsgSeq.incrementAndGet()}",
+            id = "sys_${System.currentTimeMillis()}_${msgIdSeq.incrementAndGet()}",
             targetMode = 2,
             targetId = Repository.currentChannelId.value.toLongOrNull() ?: 0L,
             senderId = 0,
@@ -132,7 +133,8 @@ class ChatViewModel(application: Application) : AndroidViewModel(application) {
         val selfName = Repository.getClient(selfId)?.nickname ?: ""
 
         // 生成唯一 ID（用于匹配回显）
-        val messageId = "local_${System.currentTimeMillis()}_${selfId}"
+        // 追加全局递增 seq，避免同毫秒多条本地消息 ID 重复
+        val messageId = "local_${System.currentTimeMillis()}_${selfId}_${msgIdSeq.incrementAndGet()}"
         val timestamp = System.currentTimeMillis()
 
         // 1. 立即添加到本地列表（PENDING 状态）
@@ -280,7 +282,8 @@ class ChatViewModel(application: Application) : AndroidViewModel(application) {
 
         // 非自己的消息，或无法匹配的自己的消息 → 正常归档
         val message = ChatMessage(
-            id = "${System.currentTimeMillis()}_${senderId}",
+            // 追加全局递增 seq，避免同毫秒同发送者多条消息 ID 重复
+            id = "${System.currentTimeMillis()}_${senderId}_${msgIdSeq.incrementAndGet()}",
             targetMode = targetMode,
             targetId = targetId,
             senderId = senderId,

android/app/src/main/java/com/tsmobile/app/viewmodel/ServerViewModel.kt

@@ -192,7 +192,7 @@ class ServerViewModel(application: Application) : AndroidViewModel(application)
                         lastChannelId = chId
                     }
                     _connectionState.value = ConnectionState.WaitingForNetwork()
-                    ConnectionService.stop(getApplication())
+                    ConnectionService.update(getApplication(), "网络已断开，正在重连...", _state.value.address.trim())
                     if (networkMonitor.isAvailable.value) {
                         startReconnect("网络变化，正在重连...")
                     }
@@ -898,6 +898,7 @@ class ServerViewModel(application: Application) : AndroidViewModel(application)
 
             // 重连失败
             android.util.Log.w(TAG, "All reconnect attempts failed")
+            ConnectionService.stop(getApplication())  // 清除“重连中”通知
             Repository.clearSession()
             channelViewModel?.clearChannels()
             _connectionState.value = ConnectionState.Disconnected(
@@ -916,6 +917,7 @@ class ServerViewModel(application: Application) : AndroidViewModel(application)
 
         val params = lastConnectParams ?: return
         _connectionState.value = ConnectionState.Reconnecting(attempt = 0, reason = "手动重连")
+        ConnectionService.update(getApplication(), "正在重连...", _state.value.address.trim())
 
         viewModelScope.launch {
             val error = withContext(Dispatchers.IO) {
@@ -951,6 +953,7 @@ class ServerViewModel(application: Application) : AndroidViewModel(application)
 
         lastChannelId = ""
         networkMonitor.reset()
+        ConnectionService.stop(getApplication())  // 清除“重连中”通知
         Repository.clearSession()
         channelViewModel?.clearChannels()
         _connectionState.value = ConnectionState.Disconnected(
@@ -1077,17 +1080,14 @@ class ServerViewModel(application: Application) : AndroidViewModel(application)
             if (_connectionState.value is ConnectionState.WaitingForNetwork ||
                 _connectionState.value is ConnectionState.Reconnecting
             ) {
-                android.util.Log.d(TAG, "onDisconnected while already handling reconnect, stopping notification")
+                android.util.Log.d(TAG, "onDisconnected while already handling reconnect, keeping reconnecting notification")
-                ConnectionService.stop(getApplication())
+                ConnectionService.update(getApplication(), "连接已断开，正在重连...", _state.value.address.trim())
                 return
             }
 
             // 语音断开处理
             voiceViewModel?.onDisconnected()
 
-            // 停止前台服务
-            ConnectionService.stop(getApplication())
-
             // 判断断线原因：网络丢失 vs 服务器主动断线
             //   - ConnectivityManager 明确检测到网络切换 → 网络丢失
             //   - 断线原因为空或 timeout → TCP 静默断开（NAT 超时、运营商丢弃等），
@@ -1098,6 +1098,8 @@ class ServerViewModel(application: Application) : AndroidViewModel(application)
                 message.contains("timeout", ignoreCase = true)
 
             if (isNetworkLoss) {
+                // 网络丢失 → 重连，通知显示“重连中”（保留前台服务与保活）
+                ConnectionService.update(getApplication(), "连接已断开，正在重连...", _state.value.address.trim())
                 // 记录当前频道，供重连后自动回到原频道
                 val currentChId = Repository.currentChannelId.value
                 if (currentChId != "0" && currentChId.isNotEmpty()) {
@@ -1110,8 +1112,9 @@ class ServerViewModel(application: Application) : AndroidViewModel(application)
                 android.util.Log.i(TAG, "Network-loss disconnect detected (fallback path)")
                 startReconnect("网络变化，正在重连...")
             } else {
-                // 服务器主动断线 — 清理会话，回到首页
+                // 服务器主动断线 — 清除通知、清理会话，回到首页
                 android.util.Log.w(TAG, "Server-initiated disconnect: $message")
+                ConnectionService.stop(getApplication())
                 lastChannelId = ""
                 Repository.clearSession()
                 channelViewModel?.clearChannels()

android/app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- FileProvider 路径映射：暴露 cacheDir/logs 下的日志文件用于分享 -->
+<paths>
+    <cache-path name="logs" path="logs/" />
+</paths>