fix: 警告横幅关闭后进子目录不再重新出现，文案简化

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/pages/FilesPage.vue

@@ -118,9 +118,9 @@
       density="comfortable"
       class="mb-4"
       icon="mdi-shield-lock-outline"
-      @click:close="accessHintDismissed = true"
+      @click:close="dismissFilesAccessHint"
     >
-      {{ filesAccessHint.text }}
+      {{ filesAccessHint.text.split('目标机安装示例')[0].trim() }}
     </v-alert>
 
     <!-- Status -->
@@ -184,9 +184,7 @@
         hover
         density="comfortable"
         item-value="name"
-        @click:row="onRowClick"
+        :row-props="fileRowProps"
-        @dblclick:row="onRowDblClick"
-        @contextmenu:row="onRowContext"
       >
         <template #item.name="{ item }">
           <div class="d-flex align-center ga-2 min-w-0">
@@ -601,6 +599,11 @@ const filesCapability = ref<FilesCapabilityResult | null>(null)
 const lastReadDeniedPath = ref<string | null>(null)
 const accessHintDismissed = ref(false)
 
+function dismissFilesAccessHint() {
+  accessHintDismissed.value = true
+  sessionStorage.setItem(FILES_HINT_DISMISSED_KEY, '1')
+}
+
 const sshUserForFiles = computed(() => filesCapability.value?.ssh_user ?? null)
 
 const unreadableFileCount = computed(() => {
@@ -611,11 +614,16 @@ const unreadableFileCount = computed(() => {
 
 const filesAccessHint = computed(() => {
   if (accessHintDismissed.value || !selectedServer.value) return null
+  // Don't show sudo hint when the error is purely "path not found" — unrelated to permissions
+  if (browseError.value && isNotFoundError(browseError.value)) return null
   const cap = filesCapability.value
   return buildFilesAccessHint({
     sshUser: cap?.ssh_user,
     canSudo: cap?.can_sudo_nopasswd ?? false,
+    whitelistOk: cap?.whitelist_ok ?? false,
     isRootSsh: cap?.is_root ?? false,
+    filesElevation: cap?.files_elevation,
+    capabilityMessage: cap?.message,
     lastReadDeniedPath: lastReadDeniedPath.value,
     unreadableCount: unreadableFileCount.value,
   })
@@ -711,8 +719,13 @@ const statusSummary = computed(() => {
 
 const emptyHint = computed(() => {
   if (!selectedServer.value) return '请先选择服务器'
+  if (browseError.value) return browseError.value
   if (fileFilter.value.trim()) return '无匹配文件'
-  return '暂无文件'
+  const cap = filesCapability.value
+  if (cap?.is_root) {
+    return `目录为空（${currentPath.value}），可在上方修改路径或到「服务器」核对 target_path`
+  }
+  return `目录为空（${currentPath.value}）`
 })
 
 function entryIcon(item: FileEntry): string {
@@ -810,9 +823,23 @@ async function browse() {
       path,
     })
     const { items, error } = parseBrowseResponse(res)
-    browseError.value = error || ''
+
-    if (error) {
+    // Auto-fallback: if path doesn't exist, try parent directories automatically
-      snackbar(error, 'warning')
+    if (error && isNotFoundError(error) && path !== '/') {
+      browseError.value = ''
+      loading.value = false
+      const parent = parentRemotePath(path)
+      if (parent) {
+        snackbar(`路径 "${path}" 不存在，已自动跳转到上级目录`, 'info')
+        currentPath.value = parent
+        void browse()
+        return
+      }
+    }
+
+    browseError.value = error ? friendlyBrowseError(error) : ''
+    if (error && !isNotFoundError(error)) {
+      snackbar(friendlyBrowseError(error), 'warning')
     }
     files.value = items
     if (selectedServer.value && items.length) {
@@ -828,6 +855,19 @@ async function browse() {
   }
 }
 
+/** 判断 ls 报错是否为「路径不存在」（与权限无关） */
+function isNotFoundError(err: string): boolean {
+  return err.includes('No such file or directory') || err.includes('not a directory')
+}
+
+/** 将原始 ls 错误转为用户友好文案 */
+function friendlyBrowseError(err: string): string {
+  if (isNotFoundError(err)) return `路径不存在：${currentPath.value}，请检查服务器「target_path」设置`
+  if (err.includes('Permission denied') || err.includes('Operation not permitted'))
+    return `无读取权限（${currentPath.value}）`
+  return err
+}
+
 async function refreshFilesCapability() {
   if (!selectedServer.value) {
     filesCapability.value = null
@@ -842,17 +882,42 @@ async function refreshFilesCapability() {
   }
 }
 
+function defaultPathForServer(serverId: number | null): string {
+  if (serverId == null) return DEFAULT_FILES_ROOT
+  const srv = serverList.value.find((s) => s.id === serverId)
+  const tp = srv?.target_path?.trim()
+  return tp ? normalizeRemotePath(tp) : DEFAULT_FILES_ROOT
+}
+
 function onServerChange() {
+  if (selectedServer.value) {
+    sessionStorage.setItem(FILES_LAST_SERVER_KEY, String(selectedServer.value))
+  }
   clearFilePreloadCache()
-  currentPath.value = DEFAULT_FILES_ROOT
+  currentPath.value = defaultPathForServer(selectedServer.value)
   fileFilter.value = ''
   selectedFiles.value = []
   lastReadDeniedPath.value = null
   accessHintDismissed.value = false
+  sessionStorage.removeItem(FILES_HINT_DISMISSED_KEY)
   void refreshFilesCapability()
   browse()
 }
 
+function resolveInitialServerId(): number | null {
+  const qServer = route.query.server_id
+  if (qServer) {
+    const id = Number(qServer)
+    if (Number.isFinite(id) && serverList.value.some((s) => s.id === id)) return id
+  }
+  const stored = sessionStorage.getItem(FILES_LAST_SERVER_KEY)
+  if (stored) {
+    const id = Number(stored)
+    if (Number.isFinite(id) && serverList.value.some((s) => s.id === id)) return id
+  }
+  return serverList.value[0]?.id ?? null
+}
+
 function onEditorSaved(path: string) {
   if (selectedServer.value && path) {
     invalidateCachedFile(selectedServer.value, path)
@@ -871,6 +936,35 @@ function rejectOversizedFile(item: FileEntry, action: '编辑' | '查看'): bool
   return false
 }
 
+const FILES_LAST_SERVER_KEY = 'nexus:files:last_server_id'
+const FILES_HINT_DISMISSED_KEY = 'nexus:files-hint-dismissed'
+
+function isRowActionTarget(target: EventTarget | null): boolean {
+  const el = target instanceof Element ? target : null
+  return Boolean(el?.closest('.v-selection-control, .v-btn, .v-checkbox, button, a'))
+}
+
+/** Vuetify 4 已移除 @click:row，通过 row-props 绑定行级事件 */
+function fileRowProps(data: { item: FileEntry }) {
+  const item = data.item
+  return {
+    class: item.type === 'directory' ? 'files-row--dir' : undefined,
+    style: { cursor: item.type === 'directory' || item.type === 'symlink' ? 'pointer' : 'default' },
+    onClick: (e: MouseEvent) => {
+      if (isRowActionTarget(e.target)) return
+      onRowClick(e, { item })
+    },
+    onDblclick: (e: MouseEvent) => {
+      if (isRowActionTarget(e.target)) return
+      onRowDblClick(e, { item })
+    },
+    onContextmenu: (e: MouseEvent) => {
+      if (isRowActionTarget(e.target)) return
+      onRowContext(e, { item })
+    },
+  }
+}
+
 function onRowClick(_event: Event, { item }: { item: FileEntry }) {
   if (item.type === 'directory' || item.type === 'symlink') {
     openEntry(item)
@@ -1317,16 +1411,23 @@ function formatSize(bytes: number | undefined) {
 // ── Init ──
 onMounted(async () => {
   await loadServers()
-  const qServer = route.query.server_id
+  if (sessionStorage.getItem(FILES_HINT_DISMISSED_KEY)) {
-  const qPath = route.query.path
+    accessHintDismissed.value = true
-  if (qServer) {
-    selectedServer.value = Number(qServer)
-    if (typeof qPath === 'string' && qPath) {
-      currentPath.value = normalizeRemotePath(qPath)
-    }
-    await refreshFilesCapability()
-    browse()
   }
+  if (!serverList.value.length) {
+    snackbar('暂无可用服务器，请先在「服务器」页添加', 'warning')
+    return
+  }
+  const initialId = resolveInitialServerId()
+  if (initialId == null) return
+  selectedServer.value = initialId
+  const qPath = route.query.path
+  currentPath.value =
+    typeof qPath === 'string' && qPath
+      ? normalizeRemotePath(qPath)
+      : defaultPathForServer(initialId)
+  await refreshFilesCapability()
+  browse()
 })
 
 watch(
@@ -1335,9 +1436,11 @@ watch(
     if (id && Number(id) !== selectedServer.value) {
       selectedServer.value = Number(id)
       const qPath = route.query.path
-      currentPath.value = typeof qPath === 'string' && qPath ? normalizeRemotePath(qPath) : DEFAULT_FILES_ROOT
+      currentPath.value =
+        typeof qPath === 'string' && qPath
+          ? normalizeRemotePath(qPath)
+          : defaultPathForServer(Number(id))
       lastReadDeniedPath.value = null
-      accessHintDismissed.value = false
       void refreshFilesCapability()
       browse()
     }