FIX: Automatically cleanup deleted files from recent/pinned lists

File Cleanup Implementation:
- Detect file-not-found errors when opening files from recent/pinned lists
- Automatically remove missing files from both recent and pinned file lists
- Refresh sidebar to reflect updated lists immediately after cleanup
- Prevent error dialogs from appearing when files are successfully cleaned up

Backend Improvements:
- Enhanced SSH file manager to return proper 404 status for missing files
- Added fileNotFound flag in error responses for better error detection
- Improved error categorization for file access failures

Frontend Error Handling:
- Added onFileNotFound callback prop to FileWindow component
- Implemented handleFileNotFound function in FileManagerModern
- Enhanced error detection logic to catch various "file not found" scenarios
- Better error messages with internationalization support

Translation Additions:
- fileNotFoundAndRemoved: Notify user when file is cleaned up
- failedToLoadFile: Generic file loading error message
- serverErrorOccurred: Server error fallback message
- Chinese translations for all new error messages

Technical Details:
- Uses existing removeRecentFile and removePinnedFile API calls
- Triggers sidebar refresh via setSidebarRefreshTrigger
- Maintains backward compatibility with existing error handling
- Preserves error logging for debugging purposes

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/backend/ssh/file-manager.ts

@@ -622,9 +622,19 @@ app.get("/ssh/file_manager/ssh/readFile", (req, res) => {
               fileLogger.error(
                 `SSH readFile command failed with code ${code}: ${errorData.replace(/\n/g, " ").trim()}`,
               );
+
+              // Check if it's a "file not found" error
+              const isFileNotFound =
+                errorData.includes("No such file or directory") ||
+                errorData.includes("cannot access") ||
+                errorData.includes("not found");
+
               return res
-                .status(500)
+                .status(isFileNotFound ? 404 : 500)
-                .json({ error: `Command failed: ${errorData}` });
+                .json({
+                  error: `Command failed: ${errorData}`,
+                  fileNotFound: isFileNotFound
+                });
             }
 
             res.json({ content: data, path: filePath });

src/locales/en/translation.json

@@ -860,6 +860,9 @@
     "modified": "Modified",
     "largeFileWarning": "Large File Warning",
     "largeFileWarningDesc": "This file is {{size}} in size, which may cause performance issues when opened as text.",
+    "fileNotFoundAndRemoved": "File \"{{name}}\" not found and has been removed from recent/pinned files",
+    "failedToLoadFile": "Failed to load file: {{error}}",
+    "serverErrorOccurred": "Server error occurred. Please try again later.",
     "fileSavedSuccessfully": "File saved successfully",
     "autoSaveFailed": "Auto-save failed",
     "fileAutoSaved": "File auto-saved",

src/locales/zh/translation.json

@@ -769,6 +769,9 @@
     "modified": "修改时间",
     "largeFileWarning": "大文件警告",
     "largeFileWarningDesc": "此文件大小为 {{size}}，以文本形式打开可能会导致性能问题。",
+    "fileNotFoundAndRemoved": "文件 \"{{name}}\" 未找到，已从最近访问/固定文件中移除",
+    "failedToLoadFile": "加载文件失败：{{error}}",
+    "serverErrorOccurred": "服务器错误，请稍后重试。",
     "failedToDeleteItem": "删除项目失败",
     "itemRenamedSuccessfully": "{{type}}重命名成功",
     "failedToRenameItem": "重命名项目失败",

src/ui/Desktop/Apps/File Manager/FileManagerModern.tsx

@@ -43,6 +43,7 @@ import {
   addRecentFile,
   addPinnedFile,
   removePinnedFile,
+  removeRecentFile,
   addFolderShortcut,
   getPinnedFiles,
 } from "@/ui/main-axios.ts";
@@ -757,6 +758,7 @@ function FileManagerContent({ initialHost, onClose }: FileManagerModernProps) {
           sshHost={currentHost}
           initialX={offsetX}
           initialY={offsetY}
+          onFileNotFound={handleFileNotFound}
         />
       );
 
@@ -1553,6 +1555,26 @@ function FileManagerContent({ initialHost, onClose }: FileManagerModernProps) {
     await handleFileOpen(file);
   }
 
+  // Handle file not found - cleanup from recent and pinned lists
+  async function handleFileNotFound(file: FileItem) {
+    if (!currentHost) return;
+
+    try {
+      // Remove from recent files
+      await removeRecentFile(currentHost.id, file.path);
+
+      // Remove from pinned files
+      await removePinnedFile(currentHost.id, file.path);
+
+      // Trigger sidebar refresh to update the UI
+      setSidebarRefreshTrigger(prev => prev + 1);
+
+      console.log(`Cleaned up missing file from recent/pinned lists: ${file.path}`);
+    } catch (error) {
+      console.error("Failed to cleanup missing file:", error);
+    }
+  }
+
 
   // Clear createIntent when path changes
   useEffect(() => {

src/ui/Desktop/Apps/File Manager/components/FileWindow.tsx

@@ -10,6 +10,7 @@ import {
   connectSSH,
 } from "@/ui/main-axios";
 import { toast } from "sonner";
+import { useTranslation } from "react-i18next";
 
 interface FileItem {
   name: string;
@@ -43,6 +44,7 @@ interface FileWindowProps {
   sshHost: SSHHost;
   initialX?: number;
   initialY?: number;
+  onFileNotFound?: (file: FileItem) => void; // Callback for when file is not found
   // readOnly parameter removed, determined internally by FileViewer based on file type
 }
 
@@ -53,6 +55,7 @@ export function FileWindow({
   sshHost,
   initialX = 100,
   initialY = 100,
+  onFileNotFound,
 }: FileWindowProps) {
   const {
     closeWindow,
@@ -62,6 +65,8 @@ export function FileWindow({
     windows,
   } = useWindowManager();
 
+  const { t } = useTranslation();
+
   const [content, setContent] = useState<string>("");
   const [isLoading, setIsLoading] = useState(false);
   const [isEditable, setIsEditable] = useState(false);
@@ -192,9 +197,26 @@ export function FileWindow({
             `SSH connection failed. Please check your connection to ${sshHost.name} (${sshHost.ip}:${sshHost.port})`,
           );
         } else {
-          toast.error(
+          // Check if file not found (common error messages from cat command)
-            `Failed to load file: ${error.message || errorData?.error || "Unknown error"}`,
+          const errorMessage = errorData?.error || error.message || "Unknown error";
-          );
+          const isFileNotFound =
+            errorData?.fileNotFound ||
+            error.response?.status === 404 ||
+            errorMessage.includes("No such file or directory") ||
+            errorMessage.includes("cannot access") ||
+            errorMessage.includes("not found");
+
+          if (isFileNotFound && onFileNotFound) {
+            // Notify parent component about the missing file for cleanup
+            onFileNotFound(file);
+            toast.error(t("fileManager.fileNotFoundAndRemoved", { name: file.name }));
+          } else {
+            toast.error(t("fileManager.failedToLoadFile", {
+              error: errorMessage.includes("Server error occurred") ?
+                t("fileManager.serverErrorOccurred") :
+                errorMessage
+            }));
+          }
         }
       } finally {
         setIsLoading(false);