feat: F4.6f3 the file explorer and the image viewer

Oracle FileExplorerWindowRun uses Java's explorer and viewer windows as a
person does (the right-click menu, Java's questions answered, the import
window, the viewer's open). Both windows work on the document's files
through the core's operations: the tree of folders and files, the chosen
folder's entries, Java's menu (also as buttons, no right click needed),
copy that stays and cut that goes once pasted, the import; the viewer's
picture and title. Not taken from Java: a file chosen in the tree taken
for a folder, pictures laid over each other, a text file as an empty
picture. writeFiles numbers the entries in the file system's order again
when a rename made a new key.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/editor/src/i18n/en.json

@@ -122,6 +122,39 @@
   "emailServer.username": "User:",
   "emailServer.whiteSpace": "User names may not contain whitespace!",
   "emailServer.yes": "Yes",
+  "explorer.cancel": "Cancel",
+  "explorer.chooseFile": "Select file",
+  "explorer.close": "Close",
+  "explorer.copy": "Copy",
+  "explorer.cut": "Cut",
+  "explorer.delete": "Delete",
+  "explorer.entries": "Contents of the folder",
+  "explorer.file": "File",
+  "explorer.folder": "Folder",
+  "explorer.import": "Import",
+  "explorer.importButton": "Import file",
+  "explorer.importMissing": "Select input and output file!",
+  "explorer.importTitle": "Import file",
+  "explorer.imported": "File successfully imported!",
+  "explorer.invalidName": "“{name}” is not a valid name.",
+  "explorer.invalidTarget": "Invalid target folder!",
+  "explorer.localFile": "Local file:",
+  "explorer.menu": "Actions",
+  "explorer.nameTaken": "This folder already has an entry “{name}”.",
+  "explorer.newFolder": "New folder",
+  "explorer.newName": "New name:",
+  "explorer.no": "No",
+  "explorer.noName": "Enter a name.",
+  "explorer.notImported": "File could not be imported.",
+  "explorer.ok": "OK",
+  "explorer.paste": "Paste",
+  "explorer.pasteMissing": "What was to be pasted is no longer there.",
+  "explorer.pasteTaken": "This folder already has an entry “{name}”.",
+  "explorer.rename": "Rename",
+  "explorer.sure": "Sure?",
+  "explorer.tooLarge": "File does not exist or is too large (> 150KB)",
+  "explorer.tree": "Folders and files",
+  "explorer.yes": "Yes",
   "fileDialog.cancel": "Cancel",
   "fileDialog.entries": "Contents of the folder",
   "fileDialog.folder": "Folder:",
@@ -279,6 +312,10 @@
   "textEditor.saveAs": "Save as",
   "textEditor.savedLive": "What you type is in the file at once.",
   "textEditor.text": "Text",
+  "viewer.notFound": "There is no file “{name}”.",
+  "viewer.notImage": "“{name}” is not a picture file.",
+  "viewer.open": "Open",
+  "viewer.picture": "Picture",
   "webServer.folder": "Subdirectory",
   "webServer.hostName": "Hostname",
   "webServer.useVirtualHosts": "Enable virtual hosts",