FIX: Comprehensive file manager UI/UX improvements and bug fixes

- Fix missing i18n for terminal.terminalWithPath translation key
- Update keyboard shortcuts: remove Ctrl+T conflicts, change refresh to Ctrl+Y, rename shortcut to F6
- Remove click-to-rename functionality to prevent accidental renaming
- Fix drag preview z-index and positioning issues during file operations
- Remove false download trigger when dragging files to original position
- Fix 'Must be handling a user gesture' error in drag-to-desktop functionality
- Remove useless minimize button from file editor and diff viewer windows
- Improve context menu z-index hierarchy for better layering
- Add comprehensive drag state management and visual feedback

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

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

src/locales/zh/translation.json

@@ -639,6 +639,9 @@
   },
   "terminal": {
     "title": "终端",
+    "terminalTitle": "终端 - {{host}}",
+    "terminalWithPath": "终端 - {{host}}:{{path}}",
+    "runTitle": "运行 {{command}} - {{host}}",
     "connect": "连接主机",
     "disconnect": "断开连接",
     "clear": "清屏",
@@ -674,7 +677,7 @@
     "folder": "文件夹",
     "connectToSsh": "连接 SSH 以使用文件操作",
     "uploadFile": "上传文件",
-    "downloadFile": "下载到浏览器",
+    "downloadFile": "下载",
     "newFile": "新建文件",
     "newFolder": "新建文件夹",
     "rename": "重命名",
@@ -741,7 +744,7 @@
     "properties": "属性",
     "preview": "预览",
     "refresh": "刷新",
-    "downloadFiles": "下载 {{count}} 个文件到浏览器",
+    "downloadFiles": "下载 {{count}} 个文件",
     "copyFiles": "复制 {{count}} 个项目",
     "cutFiles": "剪切 {{count}} 个项目",
     "deleteFiles": "删除 {{count}} 个项目",