feat(project-tree): Undo restores files deleted in the Project view (#1103)

Ctrl+Z / Cmd+Z in the Project view (and Edit › Undo while it has focus) reverts the latest file operation there: a delete as well as a move or rename. Deleted files come back from their last Local History snapshot, folders are re-created and the restored items selected; items without a snapshot are named in a warning. Edit › Undo reaches the view through a new registerUndoHandler contribution; the Project view is found by a data attribute instead of its translated aria-label (also fixes the New popup's fallback anchor).

src/features/project-tree/ProjectView.tsx

@@ -60,7 +60,6 @@ import { relativePath } from "@/platform/project";
 import { folderKind } from "./folderKind";
 import { useHomeDir } from "./home";
 import { keyLike, memberNodes, nodeKeyFor, visibleInfo, type ProjectNode } from "./model";
-import { lastFileRefactoring, undoFileRefactoring } from "./fileRefactor";
 import {
   cancelEditing,
   checkEditingName,
@@ -77,6 +76,7 @@ import {
   paste,
   refreshOsClipboard,
   targetFolder,
+  undoLastFileOperation,
 } from "./operations";
 import { isInside, nameOf, parentOf, splitExtension, tildify } from "./paths";
 import {
@@ -111,7 +111,7 @@ export function showNewPopup(): boolean {
   const lead = treeHandle.current?.leadKey();
   const row = lead ? document.querySelector<HTMLElement>(`[data-project-key="${CSS.escape(lead)}"]`) : null;
   const rect = (
-    row ?? document.querySelector<HTMLElement>('[role="tree"][aria-label="Project"]')
+    row ?? document.querySelector<HTMLElement>('[data-project-view] [role="tree"]')
   )?.getBoundingClientRect();
   if (!rect) return false;
   openNewPopup({ x: rect.left + 24, y: rect.bottom }, newMenuItems(targetFolder()));
@@ -705,8 +705,7 @@ export function ProjectView() {
         openMoveDialog();
         break;
       case "Meta+Z":
-        if (lastFileRefactoring()) void undoFileRefactoring();
-        else handled = false;
+        handled = undoLastFileOperation();
         break;
       case "Meta+C":
         copySelection(false);
@@ -767,6 +766,7 @@ export function ProjectView() {
     <div
       ref={containerRef}
       className={styles.view}
+      data-project-view=""
       {...OWNS_FILE_DROP}
       onKeyDown={onKeyDown}
       // The native Edit menu may take ⌘C/⌘X/⌘V before the keymap sees them; it then sends DOM clipboard events.