fix: Uncapitalize folder titles and finalize file cleanup

src/ui/desktop/apps/file manager/components/DiffViewer.tsx

@@ -0,0 +1,347 @@
+import React, { useState, useEffect } from "react";
+import { DiffEditor } from "@monaco-editor/react";
+import { Button } from "@/components/ui/button";
+import { toast } from "sonner";
+import { useTranslation } from "react-i18next";
+import {
+  Download,
+  RefreshCw,
+  Eye,
+  EyeOff,
+  ArrowLeftRight,
+  FileText,
+} from "lucide-react";
+import {
+  readSSHFile,
+  downloadSSHFile,
+  getSSHStatus,
+  connectSSH,
+} from "@/ui/main-axios";
+import type { FileItem, SSHHost } from "@/types/index";
+
+interface DiffViewerProps {
+  file1: FileItem;
+  file2: FileItem;
+  sshSessionId: string;
+  sshHost: SSHHost;
+  onDownload1?: () => void;
+  onDownload2?: () => void;
+}
+
+export function DiffViewer({
+  file1,
+  file2,
+  sshSessionId,
+  sshHost,
+}: DiffViewerProps) {
+  const { t } = useTranslation();
+  const [content1, setContent1] = useState<string>("");
+  const [content2, setContent2] = useState<string>("");
+  const [isLoading, setIsLoading] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [diffMode, setDiffMode] = useState<"side-by-side" | "inline">(
+    "side-by-side",
+  );
+  const [showLineNumbers, setShowLineNumbers] = useState(true);
+
+  const ensureSSHConnection = async () => {
+    try {
+      const status = await getSSHStatus(sshSessionId);
+      if (!status.connected) {
+        await connectSSH(sshSessionId, {
+          hostId: sshHost.id,
+          ip: sshHost.ip,
+          port: sshHost.port,
+          username: sshHost.username,
+          password: sshHost.password,
+          sshKey: sshHost.key,
+          keyPassword: sshHost.keyPassword,
+          authType: sshHost.authType,
+          credentialId: sshHost.credentialId,
+          userId: sshHost.userId,
+        });
+      }
+    } catch {
+      await connectSSH(sshSessionId, {
+        hostId: sshHost.id,
+        ip: sshHost.ip,
+        port: sshHost.port,
+        username: sshHost.username,
+        password: sshHost.password,
+        sshKey: sshHost.key,
+        keyPassword: sshHost.keyPassword,
+        authType: sshHost.authType,
+        credentialId: sshHost.credentialId,
+        userId: sshHost.userId,
+      });
+    }
+  };
+
+  const loadFileContents = async () => {
+    if (file1.type !== "file" || file2.type !== "file") {
+      setError(t("fileManager.canOnlyCompareFiles"));
+      return;
+    }
+
+    try {
+      setIsLoading(true);
+      setError(null);
+
+      await ensureSSHConnection();
+
+      const [response1, response2] = await Promise.all([
+        readSSHFile(sshSessionId, file1.path),
+        readSSHFile(sshSessionId, file2.path),
+      ]);
+
+      setContent1(response1.content || "");
+      setContent2(response2.content || "");
+    } catch (error: unknown) {
+      console.error("Failed to load files for diff:", error);
+
+      const err = error as {
+        message?: string;
+        response?: { data?: { tooLarge?: boolean; error?: string } };
+      };
+      const errorData = err?.response?.data;
+      if (errorData?.tooLarge) {
+        setError(t("fileManager.fileTooLarge", { error: errorData.error }));
+      } else if (
+        err.message?.includes("connection") ||
+        err.message?.includes("established")
+      ) {
+        setError(
+          t("fileManager.sshConnectionFailed", {
+            name: sshHost.name,
+            ip: sshHost.ip,
+            port: sshHost.port,
+          }),
+        );
+      } else {
+        setError(
+          t("fileManager.loadFileFailed", {
+            error:
+              err.message || errorData?.error || t("fileManager.unknownError"),
+          }),
+        );
+      }
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  const handleDownloadFile = async (file: FileItem) => {
+    try {
+      await ensureSSHConnection();
+      const response = await downloadSSHFile(sshSessionId, file.path);
+
+      if (response?.content) {
+        const byteCharacters = atob(response.content);
+        const byteNumbers = new Array(byteCharacters.length);
+        for (let i = 0; i < byteCharacters.length; i++) {
+          byteNumbers[i] = byteCharacters.charCodeAt(i);
+        }
+        const byteArray = new Uint8Array(byteNumbers);
+        const blob = new Blob([byteArray], {
+          type: response.mimeType || "application/octet-stream",
+        });
+
+        const url = URL.createObjectURL(blob);
+        const link = document.createElement("a");
+        link.href = url;
+        link.download = response.fileName || file.name;
+        document.body.appendChild(link);
+        link.click();
+        document.body.removeChild(link);
+        URL.revokeObjectURL(url);
+
+        toast.success(
+          t("fileManager.downloadFileSuccess", { name: file.name }),
+        );
+      }
+    } catch (error: unknown) {
+      console.error("Failed to download file:", error);
+      const err = error as { message?: string };
+      toast.error(
+        t("fileManager.downloadFileFailed") +
+          ": " +
+          (err.message || t("fileManager.unknownError")),
+      );
+    }
+  };
+
+  const getFileLanguage = (fileName: string): string => {
+    const ext = fileName.split(".").pop()?.toLowerCase();
+    const languageMap: Record<string, string> = {
+      js: "javascript",
+      jsx: "javascript",
+      ts: "typescript",
+      tsx: "typescript",
+      py: "python",
+      java: "java",
+      c: "c",
+      cpp: "cpp",
+      cs: "csharp",
+      php: "php",
+      rb: "ruby",
+      go: "go",
+      rs: "rust",
+      html: "html",
+      css: "css",
+      scss: "scss",
+      less: "less",
+      json: "json",
+      xml: "xml",
+      yaml: "yaml",
+      yml: "yaml",
+      md: "markdown",
+      sql: "sql",
+      sh: "shell",
+      bash: "shell",
+      ps1: "powershell",
+      dockerfile: "dockerfile",
+    };
+    return languageMap[ext || ""] || "plaintext";
+  };
+
+  useEffect(() => {
+    loadFileContents();
+  }, [file1, file2, sshSessionId]);
+
+  if (isLoading) {
+    return (
+      <div className="h-full flex items-center justify-center bg-dark-bg">
+        <div className="text-center">
+          <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-blue-500 mx-auto mb-2"></div>
+          <p className="text-sm text-muted-foreground">
+            {t("fileManager.loadingFileComparison")}
+          </p>
+        </div>
+      </div>
+    );
+  }
+
+  if (error) {
+    return (
+      <div className="h-full flex items-center justify-center bg-dark-bg">
+        <div className="text-center max-w-md">
+          <FileText className="w-16 h-16 mx-auto mb-4 text-red-500 opacity-50" />
+          <p className="text-red-500 mb-4">{error}</p>
+          <Button onClick={loadFileContents} variant="outline">
+            <RefreshCw className="w-4 h-4 mr-2" />
+            {t("fileManager.reload")}
+          </Button>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div className="h-full flex flex-col bg-dark-bg">
+      <div className="flex-shrink-0 border-b border-dark-border p-3">
+        <div className="flex items-center justify-between">
+          <div className="flex items-center gap-4">
+            <div className="text-sm">
+              <span className="text-muted-foreground">
+                {t("fileManager.compare")}:
+              </span>
+              <span className="font-medium text-green-400 mx-2">
+                {file1.name}
+              </span>
+              <ArrowLeftRight className="w-4 h-4 inline mx-1" />
+              <span className="font-medium text-blue-400">{file2.name}</span>
+            </div>
+          </div>
+
+          <div className="flex items-center gap-2">
+            <Button
+              variant="outline"
+              size="sm"
+              onClick={() =>
+                setDiffMode(
+                  diffMode === "side-by-side" ? "inline" : "side-by-side",
+                )
+              }
+            >
+              {diffMode === "side-by-side"
+                ? t("fileManager.sideBySide")
+                : t("fileManager.inline")}
+            </Button>
+
+            <Button
+              variant="outline"
+              size="sm"
+              onClick={() => setShowLineNumbers(!showLineNumbers)}
+            >
+              {showLineNumbers ? (
+                <Eye className="w-4 h-4" />
+              ) : (
+                <EyeOff className="w-4 h-4" />
+              )}
+            </Button>
+
+            <Button
+              variant="outline"
+              size="sm"
+              onClick={() => handleDownloadFile(file1)}
+              title={t("fileManager.downloadFile", { name: file1.name })}
+            >
+              <Download className="w-4 h-4 mr-1" />
+              {file1.name}
+            </Button>
+
+            <Button
+              variant="outline"
+              size="sm"
+              onClick={() => handleDownloadFile(file2)}
+              title={t("fileManager.downloadFile", { name: file2.name })}
+            >
+              <Download className="w-4 h-4 mr-1" />
+              {file2.name}
+            </Button>
+
+            <Button variant="outline" size="sm" onClick={loadFileContents}>
+              <RefreshCw className="w-4 h-4" />
+            </Button>
+          </div>
+        </div>
+      </div>
+
+      <div className="flex-1">
+        <DiffEditor
+          original={content1}
+          modified={content2}
+          language={getFileLanguage(file1.name)}
+          theme="vs-dark"
+          options={{
+            renderSideBySide: diffMode === "side-by-side",
+            lineNumbers: showLineNumbers ? "on" : "off",
+            minimap: { enabled: false },
+            scrollBeyondLastLine: false,
+            fontSize: 13,
+            wordWrap: "off",
+            automaticLayout: true,
+            readOnly: true,
+            originalEditable: false,
+            scrollbar: {
+              vertical: "visible",
+              horizontal: "visible",
+            },
+            diffWordWrap: "off",
+            ignoreTrimWhitespace: false,
+          }}
+          loading={
+            <div className="h-full flex items-center justify-center">
+              <div className="text-center">
+                <div className="animate-spin rounded-full h-6 w-6 border-b-2 border-blue-500 mx-auto mb-2"></div>
+                <p className="text-sm text-muted-foreground">
+                  {t("fileManager.initializingEditor")}
+                </p>
+              </div>
+            </div>
+          }
+        />
+      </div>
+    </div>
+  );
+}

src/ui/desktop/apps/file manager/components/DiffWindow.tsx

@@ -0,0 +1,75 @@
+import React from "react";
+import { DraggableWindow } from "./DraggableWindow";
+import { DiffViewer } from "./DiffViewer";
+import { useWindowManager } from "./WindowManager";
+import { useTranslation } from "react-i18next";
+import type { FileItem, SSHHost } from "../../../../types/index.js";
+
+interface DiffWindowProps {
+  windowId: string;
+  file1: FileItem;
+  file2: FileItem;
+  sshSessionId: string;
+  sshHost: SSHHost;
+  initialX?: number;
+  initialY?: number;
+}
+
+export function DiffWindow({
+  windowId,
+  file1,
+  file2,
+  sshSessionId,
+  sshHost,
+  initialX = 150,
+  initialY = 100,
+}: DiffWindowProps) {
+  const { t } = useTranslation();
+  const { closeWindow, maximizeWindow, focusWindow, windows } =
+    useWindowManager();
+
+  const currentWindow = windows.find((w) => w.id === windowId);
+
+  const handleClose = () => {
+    closeWindow(windowId);
+  };
+
+  const handleMaximize = () => {
+    maximizeWindow(windowId);
+  };
+
+  const handleFocus = () => {
+    focusWindow(windowId);
+  };
+
+  if (!currentWindow) {
+    return null;
+  }
+
+  return (
+    <DraggableWindow
+      title={t("fileManager.fileComparison", {
+        file1: file1.name,
+        file2: file2.name,
+      })}
+      initialX={initialX}
+      initialY={initialY}
+      initialWidth={1200}
+      initialHeight={700}
+      minWidth={800}
+      minHeight={500}
+      onClose={handleClose}
+      onMaximize={handleMaximize}
+      onFocus={handleFocus}
+      isMaximized={currentWindow.isMaximized}
+      zIndex={currentWindow.zIndex}
+    >
+      <DiffViewer
+        file1={file1}
+        file2={file2}
+        sshSessionId={sshSessionId}
+        sshHost={sshHost}
+      />
+    </DraggableWindow>
+  );
+}

src/ui/desktop/apps/file manager/components/DraggableWindow.tsx

@@ -0,0 +1,387 @@
+import React, { useState, useRef, useCallback, useEffect } from "react";
+import { cn } from "@/lib/utils";
+import { Minus, X, Maximize2, Minimize2 } from "lucide-react";
+import { useTranslation } from "react-i18next";
+
+interface DraggableWindowProps {
+  title: string;
+  children: React.ReactNode;
+  initialX?: number;
+  initialY?: number;
+  initialWidth?: number;
+  initialHeight?: number;
+  minWidth?: number;
+  minHeight?: number;
+  onClose: () => void;
+  onMinimize?: () => void;
+  onMaximize?: () => void;
+  onResize?: () => void;
+  isMaximized?: boolean;
+  zIndex?: number;
+  onFocus?: () => void;
+  targetSize?: { width: number; height: number };
+}
+
+export function DraggableWindow({
+  title,
+  children,
+  initialX = 100,
+  initialY = 100,
+  initialWidth = 600,
+  initialHeight = 400,
+  minWidth = 300,
+  minHeight = 200,
+  onClose,
+  onMinimize,
+  onMaximize,
+  onResize,
+  isMaximized = false,
+  zIndex = 1000,
+  onFocus,
+  targetSize,
+}: DraggableWindowProps) {
+  const { t } = useTranslation();
+  const [position, setPosition] = useState({ x: initialX, y: initialY });
+  const [size, setSize] = useState({
+    width: initialWidth,
+    height: initialHeight,
+  });
+  const [isDragging, setIsDragging] = useState(false);
+  const [isResizing, setIsResizing] = useState(false);
+  const [resizeDirection, setResizeDirection] = useState<string>("");
+
+  const [dragStart, setDragStart] = useState({ x: 0, y: 0 });
+  const [windowStart, setWindowStart] = useState({ x: 0, y: 0 });
+  const [sizeStart, setSizeStart] = useState({ width: 0, height: 0 });
+
+  const windowRef = useRef<HTMLDivElement>(null);
+  const titleBarRef = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    if (targetSize && !isMaximized) {
+      const maxWidth = Math.min(window.innerWidth * 0.9, 1200);
+      const maxHeight = Math.min(window.innerHeight * 0.8, 800);
+
+      let newWidth = Math.min(targetSize.width + 50, maxWidth);
+      let newHeight = Math.min(targetSize.height + 150, maxHeight);
+
+      if (newWidth > maxWidth || newHeight > maxHeight) {
+        const widthRatio = maxWidth / newWidth;
+        const heightRatio = maxHeight / newHeight;
+        const scale = Math.min(widthRatio, heightRatio);
+
+        newWidth = Math.floor(newWidth * scale);
+        newHeight = Math.floor(newHeight * scale);
+      }
+
+      newWidth = Math.max(newWidth, minWidth);
+      newHeight = Math.max(newHeight, minHeight);
+
+      setSize({ width: newWidth, height: newHeight });
+
+      setPosition({
+        x: Math.max(0, (window.innerWidth - newWidth) / 2),
+        y: Math.max(0, (window.innerHeight - newHeight) / 2),
+      });
+    }
+  }, [targetSize, isMaximized, minWidth, minHeight]);
+
+  const handleWindowClick = useCallback(() => {
+    onFocus?.();
+  }, [onFocus]);
+
+  const handleMouseDown = useCallback(
+    (e: React.MouseEvent) => {
+      if (isMaximized) return;
+
+      e.preventDefault();
+      setIsDragging(true);
+      setDragStart({ x: e.clientX, y: e.clientY });
+      setWindowStart({ x: position.x, y: position.y });
+      onFocus?.();
+    },
+    [isMaximized, position, onFocus],
+  );
+
+  const handleMouseMove = useCallback(
+    (e: MouseEvent) => {
+      if (isDragging && !isMaximized) {
+        const deltaX = e.clientX - dragStart.x;
+        const deltaY = e.clientY - dragStart.y;
+
+        const newX = windowStart.x + deltaX;
+        const newY = windowStart.y + deltaY;
+
+        const windowElement = windowRef.current;
+        let positioningContainer = null;
+        let currentElement = windowElement?.parentElement;
+
+        while (currentElement && currentElement !== document.body) {
+          const computedStyle = window.getComputedStyle(currentElement);
+          const position = computedStyle.position;
+          const transform = computedStyle.transform;
+
+          if (
+            position === "relative" ||
+            position === "absolute" ||
+            position === "fixed" ||
+            transform !== "none"
+          ) {
+            positioningContainer = currentElement;
+            break;
+          }
+
+          currentElement = currentElement.parentElement;
+        }
+
+        let maxX, maxY, minX, minY;
+
+        if (positioningContainer) {
+          const containerRect = positioningContainer.getBoundingClientRect();
+
+          maxX = containerRect.width - size.width;
+          maxY = containerRect.height - size.height;
+          minX = 0;
+          minY = 0;
+        } else {
+          maxX = window.innerWidth - size.width;
+          maxY = window.innerHeight - size.height;
+          minX = 0;
+          minY = 0;
+        }
+
+        const constrainedX = Math.max(minX, Math.min(maxX, newX));
+        const constrainedY = Math.max(minY, Math.min(maxY, newY));
+
+        setPosition({
+          x: constrainedX,
+          y: constrainedY,
+        });
+      }
+
+      if (isResizing && !isMaximized) {
+        const deltaX = e.clientX - dragStart.x;
+        const deltaY = e.clientY - dragStart.y;
+
+        let newWidth = sizeStart.width;
+        let newHeight = sizeStart.height;
+        let newX = windowStart.x;
+        let newY = windowStart.y;
+
+        if (resizeDirection.includes("right")) {
+          newWidth = Math.max(minWidth, sizeStart.width + deltaX);
+        }
+        if (resizeDirection.includes("left")) {
+          const widthChange = -deltaX;
+          newWidth = Math.max(minWidth, sizeStart.width + widthChange);
+          if (newWidth > minWidth || widthChange > 0) {
+            newX = windowStart.x - (newWidth - sizeStart.width);
+          } else {
+            newX = windowStart.x - (minWidth - sizeStart.width);
+          }
+        }
+
+        if (resizeDirection.includes("bottom")) {
+          newHeight = Math.max(minHeight, sizeStart.height + deltaY);
+        }
+        if (resizeDirection.includes("top")) {
+          const heightChange = -deltaY;
+          newHeight = Math.max(minHeight, sizeStart.height + heightChange);
+          if (newHeight > minHeight || heightChange > 0) {
+            newY = windowStart.y - (newHeight - sizeStart.height);
+          } else {
+            newY = windowStart.y - (minHeight - sizeStart.height);
+          }
+        }
+
+        newX = Math.max(0, Math.min(window.innerWidth - newWidth, newX));
+        newY = Math.max(0, Math.min(window.innerHeight - newHeight, newY));
+
+        setSize({ width: newWidth, height: newHeight });
+        setPosition({ x: newX, y: newY });
+
+        if (onResize) {
+          onResize();
+        }
+      }
+    },
+    [
+      isDragging,
+      isResizing,
+      isMaximized,
+      dragStart,
+      windowStart,
+      sizeStart,
+      size,
+      position,
+      minWidth,
+      minHeight,
+      resizeDirection,
+      onResize,
+    ],
+  );
+
+  const handleMouseUp = useCallback(() => {
+    setIsDragging(false);
+    setIsResizing(false);
+    setResizeDirection("");
+  }, []);
+
+  const handleResizeStart = useCallback(
+    (e: React.MouseEvent, direction: string) => {
+      if (isMaximized) return;
+
+      e.preventDefault();
+      e.stopPropagation();
+      setIsResizing(true);
+      setResizeDirection(direction);
+      setDragStart({ x: e.clientX, y: e.clientY });
+      setWindowStart({ x: position.x, y: position.y });
+      setSizeStart({ width: size.width, height: size.height });
+      onFocus?.();
+    },
+    [isMaximized, position, size, onFocus],
+  );
+
+  useEffect(() => {
+    if (isDragging || isResizing) {
+      document.addEventListener("mousemove", handleMouseMove);
+      document.addEventListener("mouseup", handleMouseUp);
+      document.body.style.userSelect = "none";
+      document.body.style.cursor = isDragging ? "grabbing" : "resizing";
+
+      return () => {
+        document.removeEventListener("mousemove", handleMouseMove);
+        document.removeEventListener("mouseup", handleMouseUp);
+        document.body.style.userSelect = "";
+        document.body.style.cursor = "";
+      };
+    }
+  }, [isDragging, isResizing, handleMouseMove, handleMouseUp]);
+
+  const handleTitleDoubleClick = useCallback(() => {
+    onMaximize?.();
+  }, [onMaximize]);
+
+  return (
+    <div
+      ref={windowRef}
+      className={cn(
+        "absolute bg-card border border-border rounded-lg shadow-2xl",
+        "select-none overflow-hidden",
+        isMaximized ? "inset-0" : "",
+      )}
+      style={{
+        left: isMaximized ? 0 : position.x,
+        top: isMaximized ? 0 : position.y,
+        width: isMaximized ? "100%" : size.width,
+        height: isMaximized ? "100%" : size.height,
+        zIndex,
+      }}
+      onClick={handleWindowClick}
+    >
+      <div
+        ref={titleBarRef}
+        className={cn(
+          "flex items-center justify-between px-3 py-2",
+          "bg-muted/50 text-foreground border-b border-border",
+          "cursor-grab active:cursor-grabbing",
+        )}
+        onMouseDown={handleMouseDown}
+        onDoubleClick={handleTitleDoubleClick}
+      >
+        <div className="flex items-center gap-2 flex-1">
+          <span className="text-sm font-medium truncate">{title}</span>
+        </div>
+
+        <div className="flex items-center gap-1">
+          {onMinimize && (
+            <button
+              className="w-8 h-6 flex items-center justify-center rounded hover:bg-accent transition-colors"
+              onClick={(e) => {
+                e.stopPropagation();
+                onMinimize();
+              }}
+              title={t("common.minimize")}
+            >
+              <Minus className="w-4 h-4" />
+            </button>
+          )}
+
+          {onMaximize && (
+            <button
+              className="w-8 h-6 flex items-center justify-center rounded hover:bg-accent transition-colors"
+              onClick={(e) => {
+                e.stopPropagation();
+                onMaximize();
+              }}
+              title={isMaximized ? t("common.restore") : t("common.maximize")}
+            >
+              {isMaximized ? (
+                <Minimize2 className="w-4 h-4" />
+              ) : (
+                <Maximize2 className="w-4 h-4" />
+              )}
+            </button>
+          )}
+
+          <button
+            className="w-8 h-6 flex items-center justify-center rounded hover:bg-destructive hover:text-destructive-foreground transition-colors"
+            onClick={(e) => {
+              e.stopPropagation();
+              onClose();
+            }}
+            title={t("common.close")}
+          >
+            <X className="w-4 h-4" />
+          </button>
+        </div>
+      </div>
+
+      <div
+        className="flex-1 overflow-hidden"
+        style={{ height: "calc(100% - 40px)" }}
+      >
+        {children}
+      </div>
+
+      {!isMaximized && (
+        <>
+          <div
+            className="absolute top-0 left-0 right-0 h-1 cursor-n-resize"
+            onMouseDown={(e) => handleResizeStart(e, "top")}
+          />
+          <div
+            className="absolute bottom-0 left-0 right-0 h-1 cursor-s-resize"
+            onMouseDown={(e) => handleResizeStart(e, "bottom")}
+          />
+          <div
+            className="absolute top-0 bottom-0 left-0 w-1 cursor-w-resize"
+            onMouseDown={(e) => handleResizeStart(e, "left")}
+          />
+          <div
+            className="absolute top-0 bottom-0 right-0 w-1 cursor-e-resize"
+            onMouseDown={(e) => handleResizeStart(e, "right")}
+          />
+
+          <div
+            className="absolute top-0 left-0 w-2 h-2 cursor-nw-resize"
+            onMouseDown={(e) => handleResizeStart(e, "top-left")}
+          />
+          <div
+            className="absolute top-0 right-0 w-2 h-2 cursor-ne-resize"
+            onMouseDown={(e) => handleResizeStart(e, "top-right")}
+          />
+          <div
+            className="absolute bottom-0 left-0 w-2 h-2 cursor-sw-resize"
+            onMouseDown={(e) => handleResizeStart(e, "bottom-left")}
+          />
+          <div
+            className="absolute bottom-0 right-0 w-2 h-2 cursor-se-resize"
+            onMouseDown={(e) => handleResizeStart(e, "bottom-right")}
+          />
+        </>
+      )}
+    </div>
+  );
+}

src/ui/desktop/apps/file manager/components/FileWindow.tsx

@@ -0,0 +1,424 @@
+import React, { useState, useEffect, useRef } from "react";
+import { DraggableWindow } from "./DraggableWindow";
+import { FileViewer } from "./FileViewer";
+import { useWindowManager } from "./WindowManager";
+import {
+  downloadSSHFile,
+  readSSHFile,
+  writeSSHFile,
+  getSSHStatus,
+  connectSSH,
+} from "@/ui/main-axios";
+import { toast } from "sonner";
+import { useTranslation } from "react-i18next";
+
+interface FileItem {
+  name: string;
+  type: "file" | "directory" | "link";
+  path: string;
+  size?: number;
+  modified?: string;
+  permissions?: string;
+  owner?: string;
+  group?: string;
+}
+
+interface SSHHost {
+  id: number;
+  name: string;
+  ip: string;
+  port: number;
+  username: string;
+  password?: string;
+  key?: string;
+  keyPassword?: string;
+  authType: "password" | "key";
+  credentialId?: number;
+  userId?: number;
+}
+
+interface FileWindowProps {
+  windowId: string;
+  file: FileItem;
+  sshSessionId: string;
+  sshHost: SSHHost;
+  initialX?: number;
+  initialY?: number;
+  onFileNotFound?: (file: FileItem) => void;
+}
+
+export function FileWindow({
+  windowId,
+  file,
+  sshSessionId,
+  sshHost,
+  initialX = 100,
+  initialY = 100,
+  onFileNotFound,
+}: FileWindowProps) {
+  const { closeWindow, maximizeWindow, focusWindow, windows } =
+    useWindowManager();
+
+  const { t } = useTranslation();
+
+  const [content, setContent] = useState<string>("");
+  const [isLoading, setIsLoading] = useState(false);
+  const [isEditable, setIsEditable] = useState(false);
+  const [pendingContent, setPendingContent] = useState<string>("");
+  const [mediaDimensions, setMediaDimensions] = useState<
+    { width: number; height: number } | undefined
+  >();
+  const autoSaveTimerRef = useRef<NodeJS.Timeout | null>(null);
+
+  const currentWindow = windows.find((w) => w.id === windowId);
+
+  const ensureSSHConnection = async () => {
+    try {
+      const status = await getSSHStatus(sshSessionId);
+
+      if (!status.connected) {
+        await connectSSH(sshSessionId, {
+          hostId: sshHost.id,
+          ip: sshHost.ip,
+          port: sshHost.port,
+          username: sshHost.username,
+          password: sshHost.password,
+          sshKey: sshHost.key,
+          keyPassword: sshHost.keyPassword,
+          authType: sshHost.authType,
+          credentialId: sshHost.credentialId,
+          userId: sshHost.userId,
+        });
+      }
+    } catch (error) {
+      console.error("SSH connection check/reconnect failed:", error);
+      throw error;
+    }
+  };
+
+  useEffect(() => {
+    const loadFileContent = async () => {
+      if (file.type !== "file") return;
+
+      try {
+        setIsLoading(true);
+
+        await ensureSSHConnection();
+
+        const response = await readSSHFile(sshSessionId, file.path);
+        const fileContent = response.content || "";
+        setContent(fileContent);
+        setPendingContent(fileContent);
+
+        if (!file.size) {
+          const contentSize = new Blob([fileContent]).size;
+          file.size = contentSize;
+        }
+
+        const mediaExtensions = [
+          "jpg",
+          "jpeg",
+          "png",
+          "gif",
+          "bmp",
+          "svg",
+          "webp",
+          "tiff",
+          "ico",
+          "mp3",
+          "wav",
+          "ogg",
+          "aac",
+          "flac",
+          "m4a",
+          "wma",
+          "mp4",
+          "avi",
+          "mov",
+          "wmv",
+          "flv",
+          "mkv",
+          "webm",
+          "m4v",
+          "zip",
+          "rar",
+          "7z",
+          "tar",
+          "gz",
+          "bz2",
+          "xz",
+          "exe",
+          "dll",
+          "so",
+          "dylib",
+          "bin",
+          "iso",
+        ];
+
+        const extension = file.name.split(".").pop()?.toLowerCase();
+        setIsEditable(!mediaExtensions.includes(extension || ""));
+      } catch (error: unknown) {
+        console.error("Failed to load file:", error);
+
+        const err = error as {
+          message?: string;
+          isFileNotFound?: boolean;
+          response?: {
+            status?: number;
+            data?: {
+              tooLarge?: boolean;
+              error?: string;
+              fileNotFound?: boolean;
+            };
+          };
+        };
+        const errorData = err?.response?.data;
+        if (errorData?.tooLarge) {
+          toast.error(`File too large: ${errorData.error}`, {
+            duration: 10000,
+          });
+        } else if (
+          err.message?.includes("connection") ||
+          err.message?.includes("established")
+        ) {
+          toast.error(
+            `SSH connection failed. Please check your connection to ${sshHost.name} (${sshHost.ip}:${sshHost.port})`,
+          );
+        } else {
+          const errorMessage =
+            errorData?.error || err.message || "Unknown error";
+          const isFileNotFound =
+            err.isFileNotFound ||
+            errorData?.fileNotFound ||
+            err.response?.status === 404 ||
+            errorMessage.includes("File not found") ||
+            errorMessage.includes("No such file or directory") ||
+            errorMessage.includes("cannot access") ||
+            errorMessage.includes("not found") ||
+            errorMessage.includes("Resource not found");
+
+          if (isFileNotFound && onFileNotFound) {
+            onFileNotFound(file);
+            toast.error(
+              t("fileManager.fileNotFoundAndRemoved", { name: file.name }),
+            );
+
+            closeWindow(windowId);
+            return;
+          } else {
+            toast.error(
+              t("fileManager.failedToLoadFile", {
+                error: errorMessage.includes("Server error occurred")
+                  ? t("fileManager.serverErrorOccurred")
+                  : errorMessage,
+              }),
+            );
+          }
+        }
+      } finally {
+        setIsLoading(false);
+      }
+    };
+
+    loadFileContent();
+  }, [file, sshSessionId, sshHost]);
+
+  const handleRevert = async () => {
+    const loadFileContent = async () => {
+      if (file.type !== "file") return;
+
+      try {
+        setIsLoading(true);
+
+        await ensureSSHConnection();
+
+        const response = await readSSHFile(sshSessionId, file.path);
+        const fileContent = response.content || "";
+        setContent(fileContent);
+        setPendingContent("");
+
+        if (!file.size) {
+          const contentSize = new Blob([fileContent]).size;
+          file.size = contentSize;
+        }
+      } catch (error: unknown) {
+        console.error("Failed to load file content:", error);
+        const err = error as { message?: string };
+        toast.error(
+          `${t("fileManager.failedToLoadFile")}: ${err.message || t("fileManager.unknownError")}`,
+        );
+      } finally {
+        setIsLoading(false);
+      }
+    };
+
+    loadFileContent();
+  };
+
+  const handleSave = async (newContent: string) => {
+    try {
+      setIsLoading(true);
+
+      await ensureSSHConnection();
+
+      await writeSSHFile(sshSessionId, file.path, newContent);
+      setContent(newContent);
+      setPendingContent("");
+
+      if (autoSaveTimerRef.current) {
+        clearTimeout(autoSaveTimerRef.current);
+        autoSaveTimerRef.current = null;
+      }
+
+      toast.success(t("fileManager.fileSavedSuccessfully"));
+    } catch (error: unknown) {
+      console.error("Failed to save file:", error);
+
+      const err = error as { message?: string };
+      if (
+        err.message?.includes("connection") ||
+        err.message?.includes("established")
+      ) {
+        toast.error(
+          `SSH connection failed. Please check your connection to ${sshHost.name} (${sshHost.ip}:${sshHost.port})`,
+        );
+      } else {
+        toast.error(
+          `${t("fileManager.failedToSaveFile")}: ${err.message || t("fileManager.unknownError")}`,
+        );
+      }
+    } finally {
+      setIsLoading(false);
+    }
+  };
+
+  const handleContentChange = (newContent: string) => {
+    setPendingContent(newContent);
+
+    if (autoSaveTimerRef.current) {
+      clearTimeout(autoSaveTimerRef.current);
+      autoSaveTimerRef.current = null;
+    }
+
+    if (newContent !== content) {
+      autoSaveTimerRef.current = setTimeout(async () => {
+        try {
+          await handleSave(newContent);
+          toast.success(t("fileManager.fileAutoSaved"));
+        } catch (error) {
+          console.error("Auto-save failed:", error);
+          toast.error(t("fileManager.autoSaveFailed"));
+        }
+      }, 60000);
+    }
+  };
+
+  useEffect(() => {
+    return () => {
+      if (autoSaveTimerRef.current) {
+        clearTimeout(autoSaveTimerRef.current);
+      }
+    };
+  }, []);
+
+  const handleDownload = async () => {
+    try {
+      await ensureSSHConnection();
+
+      const response = await downloadSSHFile(sshSessionId, file.path);
+
+      if (response?.content) {
+        const byteCharacters = atob(response.content);
+        const byteNumbers = new Array(byteCharacters.length);
+        for (let i = 0; i < byteCharacters.length; i++) {
+          byteNumbers[i] = byteCharacters.charCodeAt(i);
+        }
+        const byteArray = new Uint8Array(byteNumbers);
+        const blob = new Blob([byteArray], {
+          type: response.mimeType || "application/octet-stream",
+        });
+
+        const url = URL.createObjectURL(blob);
+        const link = document.createElement("a");
+        link.href = url;
+        link.download = response.fileName || file.name;
+        document.body.appendChild(link);
+        link.click();
+        document.body.removeChild(link);
+        URL.revokeObjectURL(url);
+
+        toast.success(t("fileManager.fileDownloadedSuccessfully"));
+      }
+    } catch (error: unknown) {
+      console.error("Failed to download file:", error);
+
+      const err = error as { message?: string };
+      if (
+        err.message?.includes("connection") ||
+        err.message?.includes("established")
+      ) {
+        toast.error(
+          `SSH connection failed. Please check your connection to ${sshHost.name} (${sshHost.ip}:${sshHost.port})`,
+        );
+      } else {
+        toast.error(
+          `Failed to download file: ${err.message || "Unknown error"}`,
+        );
+      }
+    }
+  };
+
+  const handleClose = () => {
+    closeWindow(windowId);
+  };
+
+  const handleMaximize = () => {
+    maximizeWindow(windowId);
+  };
+
+  const handleFocus = () => {
+    focusWindow(windowId);
+  };
+
+  const handleMediaDimensionsChange = (dimensions: {
+    width: number;
+    height: number;
+  }) => {
+    setMediaDimensions(dimensions);
+  };
+
+  if (!currentWindow) {
+    return null;
+  }
+
+  return (
+    <DraggableWindow
+      title={file.name}
+      initialX={initialX}
+      initialY={initialY}
+      initialWidth={800}
+      initialHeight={600}
+      minWidth={400}
+      minHeight={300}
+      onClose={handleClose}
+      onMaximize={handleMaximize}
+      onFocus={handleFocus}
+      isMaximized={currentWindow.isMaximized}
+      zIndex={currentWindow.zIndex}
+      targetSize={mediaDimensions}
+    >
+      <FileViewer
+        file={file}
+        content={pendingContent || content}
+        savedContent={content}
+        isLoading={isLoading}
+        onRevert={handleRevert}
+        isEditable={isEditable}
+        onContentChange={handleContentChange}
+        onSave={(newContent) => handleSave(newContent)}
+        onDownload={handleDownload}
+        onMediaDimensionsChange={handleMediaDimensionsChange}
+      />
+    </DraggableWindow>
+  );
+}

src/ui/desktop/apps/file manager/components/TerminalWindow.tsx

@@ -0,0 +1,116 @@
+import React from "react";
+import { DraggableWindow } from "./DraggableWindow";
+import { Terminal } from "@/ui/desktop/apps/terminal/Terminal";
+import { useWindowManager } from "./WindowManager";
+import { useTranslation } from "react-i18next";
+
+interface SSHHost {
+  id: number;
+  name: string;
+  ip: string;
+  port: number;
+  username: string;
+  password?: string;
+  key?: string;
+  keyPassword?: string;
+  authType: "password" | "key";
+  credentialId?: number;
+  userId?: number;
+}
+
+interface TerminalWindowProps {
+  windowId: string;
+  hostConfig: SSHHost;
+  initialPath?: string;
+  initialX?: number;
+  initialY?: number;
+  executeCommand?: string;
+}
+
+export function TerminalWindow({
+  windowId,
+  hostConfig,
+  initialPath,
+  initialX = 200,
+  initialY = 150,
+  executeCommand,
+}: TerminalWindowProps) {
+  const { t } = useTranslation();
+  const { closeWindow, maximizeWindow, focusWindow, windows } =
+    useWindowManager();
+  const terminalRef = React.useRef<{ fit?: () => void } | null>(null);
+  const resizeTimeoutRef = React.useRef<NodeJS.Timeout | null>(null);
+
+  React.useEffect(() => {
+    return () => {
+      if (resizeTimeoutRef.current) {
+        clearTimeout(resizeTimeoutRef.current);
+      }
+    };
+  }, []);
+
+  const currentWindow = windows.find((w) => w.id === windowId);
+  if (!currentWindow) {
+    return null;
+  }
+
+  const handleClose = () => {
+    closeWindow(windowId);
+  };
+
+  const handleMaximize = () => {
+    maximizeWindow(windowId);
+  };
+
+  const handleFocus = () => {
+    focusWindow(windowId);
+  };
+
+  const handleResize = () => {
+    if (resizeTimeoutRef.current) {
+      clearTimeout(resizeTimeoutRef.current);
+    }
+
+    resizeTimeoutRef.current = setTimeout(() => {
+      if (terminalRef.current?.fit) {
+        terminalRef.current.fit();
+      }
+    }, 100);
+  };
+
+  const terminalTitle = executeCommand
+    ? t("terminal.runTitle", { host: hostConfig.name, command: executeCommand })
+    : initialPath
+      ? t("terminal.terminalWithPath", {
+          host: hostConfig.name,
+          path: initialPath,
+        })
+      : t("terminal.terminalTitle", { host: hostConfig.name });
+
+  return (
+    <DraggableWindow
+      title={terminalTitle}
+      initialX={initialX}
+      initialY={initialY}
+      initialWidth={800}
+      initialHeight={500}
+      minWidth={600}
+      minHeight={400}
+      onClose={handleClose}
+      onMaximize={handleMaximize}
+      onFocus={handleFocus}
+      onResize={handleResize}
+      isMaximized={currentWindow.isMaximized}
+      zIndex={currentWindow.zIndex}
+    >
+      <Terminal
+        ref={terminalRef}
+        hostConfig={hostConfig}
+        isVisible={!currentWindow.isMinimized}
+        initialPath={initialPath}
+        executeCommand={executeCommand}
+        onClose={handleClose}
+      />
+    </DraggableWindow>
+  );
+}

src/ui/desktop/apps/file manager/components/WindowManager.tsx

@@ -0,0 +1,138 @@
+import React, { useState, useCallback, useRef } from "react";
+
+export interface WindowInstance {
+  id: string;
+  title: string;
+  component: React.ReactNode | ((windowId: string) => React.ReactNode);
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+  isMaximized: boolean;
+  isMinimized: boolean;
+  zIndex: number;
+}
+
+interface WindowManagerProps {
+  children?: React.ReactNode;
+}
+
+interface WindowManagerContextType {
+  windows: WindowInstance[];
+  openWindow: (window: Omit<WindowInstance, "id" | "zIndex">) => string;
+  closeWindow: (id: string) => void;
+  minimizeWindow: (id: string) => void;
+  maximizeWindow: (id: string) => void;
+  focusWindow: (id: string) => void;
+  updateWindow: (id: string, updates: Partial<WindowInstance>) => void;
+}
+
+const WindowManagerContext =
+  React.createContext<WindowManagerContextType | null>(null);
+
+export function WindowManager({ children }: WindowManagerProps) {
+  const [windows, setWindows] = useState<WindowInstance[]>([]);
+  const nextZIndex = useRef(1000);
+  const windowCounter = useRef(0);
+
+  const openWindow = useCallback(
+    (windowData: Omit<WindowInstance, "id" | "zIndex">) => {
+      const id = `window-${++windowCounter.current}`;
+      const zIndex = ++nextZIndex.current;
+
+      const offset = (windows.length % 5) * 20;
+      let adjustedX = windowData.x + offset;
+      let adjustedY = windowData.y + offset;
+
+      const maxX = Math.max(0, window.innerWidth - windowData.width - 20);
+      const maxY = Math.max(0, window.innerHeight - windowData.height - 20);
+
+      adjustedX = Math.max(20, Math.min(adjustedX, maxX));
+      adjustedY = Math.max(20, Math.min(adjustedY, maxY));
+
+      const newWindow: WindowInstance = {
+        ...windowData,
+        id,
+        zIndex,
+        x: adjustedX,
+        y: adjustedY,
+      };
+
+      setWindows((prev) => [...prev, newWindow]);
+      return id;
+    },
+    [windows.length],
+  );
+
+  const closeWindow = useCallback((id: string) => {
+    setWindows((prev) => prev.filter((w) => w.id !== id));
+  }, []);
+
+  const minimizeWindow = useCallback((id: string) => {
+    setWindows((prev) =>
+      prev.map((w) =>
+        w.id === id ? { ...w, isMinimized: !w.isMinimized } : w,
+      ),
+    );
+  }, []);
+
+  const maximizeWindow = useCallback((id: string) => {
+    setWindows((prev) =>
+      prev.map((w) =>
+        w.id === id ? { ...w, isMaximized: !w.isMaximized } : w,
+      ),
+    );
+  }, []);
+
+  const focusWindow = useCallback((id: string) => {
+    setWindows((prev) => {
+      const targetWindow = prev.find((w) => w.id === id);
+      if (!targetWindow) return prev;
+
+      const newZIndex = ++nextZIndex.current;
+      return prev.map((w) => (w.id === id ? { ...w, zIndex: newZIndex } : w));
+    });
+  }, []);
+
+  const updateWindow = useCallback(
+    (id: string, updates: Partial<WindowInstance>) => {
+      setWindows((prev) =>
+        prev.map((w) => (w.id === id ? { ...w, ...updates } : w)),
+      );
+    },
+    [],
+  );
+
+  const contextValue: WindowManagerContextType = {
+    windows,
+    openWindow,
+    closeWindow,
+    minimizeWindow,
+    maximizeWindow,
+    focusWindow,
+    updateWindow,
+  };
+
+  return (
+    <WindowManagerContext.Provider value={contextValue}>
+      {children}
+      <div className="window-container">
+        {windows.map((window) => (
+          <div key={window.id}>
+            {typeof window.component === "function"
+              ? window.component(window.id)
+              : window.component}
+          </div>
+        ))}
+      </div>
+    </WindowManagerContext.Provider>
+  );
+}
+
+export function useWindowManager() {
+  const context = React.useContext(WindowManagerContext);
+  if (!context) {
+    throw new Error("useWindowManager must be used within a WindowManager");
+  }
+  return context;
+}