修复: 文件系统初始化守卫与传输收尾等七处

- filesystemSvc 守卫17绑定方法,异步初始化完成前返回明确错误
- MovePath 跨盘剪切建 move emitter,失败清理目标盘残留
- SFTP 空目录下载/上传补 MkdirAll 落地
- drawio 下载失败等待者立即返回,不再空轮询30分钟
- batch 高亮补 %1 与 %%i 规则
- 错误文案转换抽 errMessage 共享函数,11处归一
- log.Printf 统一 slog.Warn

frontend/src/api/connection-manager.ts

@@ -9,6 +9,7 @@ import { HttpTransport } from './http-transport'
 import { SftpTransport } from './sftp-transport'
 import { OssTransport } from './oss-transport'
 import { getFileServerBaseURL } from './file-server'
+import { errMessage } from '@/utils/errors'
 import {
   LoadConnectionProfiles, SaveConnectionProfile, DeleteConnectionProfile,
   SftpGetSystemInfo, GetLocalSystemInfo,
@@ -268,7 +269,7 @@ class ConnectionManagerImpl {
           }
         }
       }
-    } catch (e) { info._error = true; info._errorMsg = errMsg(e) }
+    } catch (e) { info._error = true; info._errorMsg = errMessage(e) }
 
     this._sysInfoCache.set(profileId, info)
     this._sysInfoChangeCallbacks.forEach(cb => cb(profileId, info))
@@ -320,7 +321,7 @@ class ConnectionManagerImpl {
     } catch (err) {
       // 回退目标可能已不在池中（死连接重建时 disconnectProfile 先移除），指向池外会让 getTransport 静默回落本地造成 UI 幻影
       this._activeId = (prevActiveId && this._pool.has(prevActiveId)) ? prevActiveId : 'local-default'
-      this.setProfileState(profileId, 'error', err instanceof Error ? err.message : String(err))
+      this.setProfileState(profileId, 'error', errMessage(err))
       this.notifyChange()
       throw err
     }
@@ -433,7 +434,7 @@ class ConnectionManagerImpl {
         this.fetchSystemInfo(profileId).catch(() => {})
       } catch (err) {
         this._pool.delete(profileId)
-        this.setProfileState(profileId, 'error', errMsg(err))
+        this.setProfileState(profileId, 'error', errMessage(err))
         this.setState('error')
         throw err
       }
@@ -453,7 +454,7 @@ class ConnectionManagerImpl {
         this.updateProfile(profileId, { lastConnected: Date.now() })
       } catch (err) {
         this._pool.delete(profileId)
-        this.setProfileState(profileId, 'error', errMsg(err))
+        this.setProfileState(profileId, 'error', errMessage(err))
         this.setState('error')
         throw err
       }
@@ -474,13 +475,13 @@ class ConnectionManagerImpl {
         this.updateProfile(profileId, { lastConnected: Date.now() })
         this.fetchSystemInfo(profileId).catch(() => {})
       }).catch((e) => {
-        this.setProfileState(profileId, 'error', errMsg(e))
+        this.setProfileState(profileId, 'error', errMessage(e))
         if (this._activeId !== profileId) return
         this.setState('error')
       })
     } catch (err) {
       this._pool.delete(profileId)
-      this.setProfileState(profileId, 'error', errMsg(err))
+      this.setProfileState(profileId, 'error', errMessage(err))
       this.setState('error')
       throw err
     }
@@ -489,11 +490,6 @@ class ConnectionManagerImpl {
 
 export const connectionManager = new ConnectionManagerImpl()
 
-/** 任意抛出值转错误文案 */
-function errMsg(e: unknown): string {
-  return e instanceof Error ? e.message : String(e)
-}
-
 /** snake_case → camelCase */
 function snakeToCamel(obj: Record<string, any>): Record<string, any> {
   const result: Record<string, any> = {}

frontend/src/components/FileSystem/index.vue

@@ -155,6 +155,7 @@ import { connectionManager } from '@/api/connection-manager'
 import { STORAGE_KEYS, DEFAULTS, UI_TEXT, VALIDATION_RULES, FILE_EXTENSIONS, FILE_SIZE_THRESHOLDS } from '@/utils/constants'
 import { isAutoRestoreDisabled, clearAutoRestoreDisabled } from '@/utils/freezeWatchdog'
 import { parseWailsEventData } from '@/utils/wailsEvent'
+import { errMessage } from '@/utils/errors'
 import { createResizeHandler } from '@/utils/resize'
 
 // 导入类型
@@ -524,7 +525,7 @@ const handleConnectionChanged = async (profileId: string) => {
   try {
     await switchConnection(profileId)
   } catch (err) {
-    Message.error(`连接失败: ${err instanceof Error ? err.message : String(err)}`)
+    Message.error(`连接失败: ${errMessage(err)}`)
   }
 }
 
@@ -647,7 +648,7 @@ const handleOpenFavorite = async (file: FavoriteFile) => {
       await loadCommonPaths()
     } catch (e) {
       console.error('切换连接失败:', e)
-      Message.error(`无法连接: ${e instanceof Error ? e.message : String(e)}`)
+      Message.error(`无法连接: ${errMessage(e)}`)
       return
     }
   } else if (!file.profileId) {
@@ -1011,7 +1012,7 @@ const handlePasteClipboard = async () => {
     } catch (error) {
       failed++
       console.error('[Clipboard] 粘贴失败:', item.path, error)
-      Message.error(`粘贴失败: ${item.name} - ${error instanceof Error ? error.message : error}`)
+      Message.error(`粘贴失败: ${item.name} - ${errMessage(error)}`)
     }
   }
 
@@ -1033,7 +1034,7 @@ const handleDownloadToLocal = async (file: FileItem) => {
     const localPath = await connectionManager.getTransport().downloadToFile(file.path, dstDir)
     Message.success(`已下载到: ${localPath}`)
   } catch (error) {
-    Message.error(`下载失败: ${error instanceof Error ? error.message : error}`)
+    Message.error(`下载失败: ${errMessage(error)}`)
   }
 }
 
@@ -1067,7 +1068,7 @@ const handleExternalDrop = async (paths: string[]) => {
       Message.success(`已复制 ${paths.length} 个项目`)
     }
   } catch (error) {
-    Message.error(`拖入失败: ${error instanceof Error ? error.message : error}`)
+    Message.error(`拖入失败: ${errMessage(error)}`)
     await loadDirectory(targetDir)
   }
 }

frontend/src/utils/codeMirrorLoader.js

@@ -108,8 +108,8 @@ export async function loadLanguageExtension(language) {
           if (stream.eatSpace()) return null
           if (stream.match(/^"(?:[^"\r\n]|"")*"?/)) return 'string'
           if (stream.eat('^')) return 'operator'
-          // !var! 延迟变量、%var% 环境变量、%~d0 类批处理参数
-          if (stream.match(/^!\w+!/) || stream.match(/^%\w+%/) || stream.match(/^%~[a-z]*[\d*]/i)) return 'atom'
+          // !var! 延迟变量、%var% 环境变量、%~d0 类批处理参数、%1 位置参数、%%i for 循环变量
+          if (stream.match(/^!\w+!/) || stream.match(/^%\w+%/) || stream.match(/^%~[a-z]*[\d*]/i) || stream.match(/^%\d/) || stream.match(/^%%\w+/)) return 'atom'
           if (stream.match(/^\w+/)) {
             return batchKeywords.has(stream.current().toLowerCase()) ? 'keyword' : null
           }

frontend/src/utils/errors.ts

@@ -0,0 +1,7 @@
+/**
+ * 任意抛出值转错误文案（Error 取 message，其余 String 化）
+ */
+
+export function errMessage(e: unknown): string {
+  return e instanceof Error ? e.message : String(e)
+}