Fix files page new-file flow and SFTP parent directory creation.

Show a clear prompt when no server is selected, wait for the editor workbench before openFile, and mkdir -p parent paths before SFTP writes.

docs/audit/2026-06-10-files-new-file-fix.md

@@ -0,0 +1,35 @@
+# 审计 — 文件管理「新建文件」修复
+
+**Changelog**: `docs/changelog/2026-06-10-files-new-file-fix.md`
+
+## 变更文件
+
+| 文件 | 说明 |
+|------|------|
+| `frontend/src/composables/files/useFilesActions.ts` | `openNewFileDialog`、等待编辑器就绪 |
+| `frontend/src/composables/files/useFilesEditor.ts` | 导出 `waitForEditorWorkbench` |
+| `frontend/src/composables/files/useFilesPage.ts` | 透传 helper |
+| `frontend/src/components/files/FilesToolbar.vue` | 未选服务器时提示 |
+| `server/infrastructure/ssh/asyncssh_pool.py` | SFTP 写前确保父目录 |
+
+## Step 3（规则扫描）
+
+| 规则 | 结论 | 说明 |
+|------|------|------|
+| 鉴权 | PASS | 仍走 `/sync/write-file` + admin JWT |
+| 路径 | PASS | `validatePathSegment` 不变 |
+| 静默失败 | PASS | 编辑器未就绪有 warning snackbar |
+| SSH | PASS | `mkdir -p` 仅父目录，不扩大写范围 |
+
+## Closure
+
+| 文件 | 结论 |
+|------|------|
+| `useFilesActions.ts` | SAFE — 无 v-html；错误经 snackbar |
+| `asyncssh_pool.py` | SAFE — 复用已有 `_ensure_remote_parent_dir` |
+
+## DoD
+
+- [x] changelog + 本审计
+- [x] frontend type-check
+- [ ] 生产：文件管理新建文件 → 编辑器打开

docs/changelog/2026-06-10-files-new-file-fix.md

@@ -0,0 +1,25 @@
+# 2026-06-10 — 文件管理「新建文件」修复
+
+## 摘要
+
+修复文件页「新建文件」点击无反馈或创建后编辑器不弹出的问题。
+
+## 动机
+
+- 未选服务器时按钮被禁用，用户以为功能坏了
+- 创建成功后未等待 `FileEditorWorkbench` 就绪即 `openFile`，编辑器静默不打开
+- SFTP 写入前未确保父目录存在（部分路径下 write-file 失败）
+
+## 涉及文件
+
+- `frontend/src/composables/files/useFilesActions.ts` — `openNewFileDialog`、`waitForEditorWorkbench`
+- `frontend/src/composables/files/useFilesEditor.ts` — 导出 `waitForEditorWorkbench`
+- `frontend/src/components/files/FilesToolbar.vue` — 未选服务器时提示而非禁用
+- `server/infrastructure/ssh/asyncssh_pool.py` — SFTP 写前 `mkdir -p` 父目录
+
+## 验证
+
+```bash
+cd frontend && npm run type-check
+# 文件管理 → 选服务器 → 新建文件 → 应创建并打开编辑器
+```

frontend/src/components/files/FilesToolbar.vue

@@ -97,8 +97,7 @@ const p = useFilesPageContext()
           size="small"
           variant="tonal"
           prepend-icon="mdi-file-plus"
-          :disabled="!p.selectedServer"
-          @click="p.showNewFile = true"
+          @click="p.openNewFileDialog()"
         >
           新建文件
         </v-btn>

frontend/src/composables/files/useFilesActions.ts

@@ -26,6 +26,7 @@ export function useFilesActions(options: {
   previewFile: (item: FileEntry) => Promise<void>
   openInTerminal: () => void
   editorWorkbench: Ref<{ openFile: (p: OpenFilePayload) => void } | null>
+  waitForEditorWorkbench?: () => Promise<{ openFile: (p: OpenFilePayload) => void } | null>
   actionLoading?: Ref<boolean>
 }) {
   const snackbar = useSnackbar()
@@ -289,7 +290,11 @@ export function useFilesActions(options: {
   }
 
   async function doNewFile() {
-    if (!selectedServer.value || !newFileName.value) return
+    if (!selectedServer.value) {
+      snackbar('请先选择服务器', 'warning')
+      return
+    }
+    if (!newFileName.value) return
     const check = validatePathSegment(newFileName.value)
     if (check !== true) {
       snackbar(check, 'warning')
@@ -311,7 +316,13 @@ export function useFilesActions(options: {
       await options.browse({ force: true })
       snackbar('文件已创建')
       await nextTick()
-      options.editorWorkbench.value?.openFile({
+      const wb =
+        (await options.waitForEditorWorkbench?.()) ?? options.editorWorkbench.value
+      if (!wb?.openFile) {
+        snackbar('文件已创建；编辑器未就绪，请从列表双击打开', 'warning')
+        return
+      }
+      wb.openFile({
         path,
         name,
         content: '',
@@ -541,6 +552,14 @@ export function useFilesActions(options: {
     showContextMenu.value = true
   }
 
+  function openNewFileDialog() {
+    if (!selectedServer.value) {
+      snackbar('请先选择服务器', 'warning')
+      return
+    }
+    showNewFile.value = true
+  }
+
   return {
     dropActive,
     showUpload,
@@ -580,6 +599,7 @@ export function useFilesActions(options: {
     doCompress,
     doDecompress,
     doNewFile,
+    openNewFileDialog,
     startRename,
     doRename,
     startChmod,

frontend/src/composables/files/useFilesEditor.ts

@@ -155,6 +155,7 @@ export function useFilesEditor(options: {
     previewContent,
     previewLoading,
     editorWorkbench,
+    waitForEditorWorkbench,
     previewFile,
     editFile,
     onEditorSaved,

frontend/src/composables/files/useFilesPage.ts

@@ -89,6 +89,7 @@ export function useFilesPage() {
     previewFile: editor.previewFile,
     openInTerminal: nav.openInTerminal,
     editorWorkbench: editor.editorWorkbench,
+    waitForEditorWorkbench: editor.waitForEditorWorkbench,
     actionLoading,
   })
 
@@ -228,6 +229,7 @@ export function useFilesPage() {
     showNewFile: actions.showNewFile,
     newFileName: actions.newFileName,
     doNewFile: actions.doNewFile,
+    openNewFileDialog: actions.openNewFileDialog,
     showMkdir: actions.showMkdir,
     mkdirName: actions.mkdirName,
     doMkdir: actions.doMkdir,

server/infrastructure/ssh/asyncssh_pool.py

@@ -419,6 +419,9 @@ async def remote_write_bytes(
 
     if not skip_sftp:
         try:
+            parent = posix_dirname(remote_path)
+            if parent and parent != "/":
+                await _ensure_remote_parent_dir(conn, remote_path, use_sudo=False)
             async with await conn.start_sftp_client() as sftp:
                 await sftp_write_bytes(sftp, remote_path, data)
             return