Turn the own mouse pointer off again after signing out and in

CI was red on d4fc425 with two checks, both from this week's work.

- Signing out builds the editor anew on the same renderer. The second
  useCursorFiles then took the SVG pointers of the first for Pixi's
  own styles, so switching the option off kept them. The editor now
  undoes the pointers on dispose and Pixi's styles are back in place.
- e2e 62d still looked for "Start recording". The menu reads "Start
  recording…" since ba01d14, and 62 had not run then.

Tests:
- e2e 45, 46 and 62 on melektaus-atx: ALL PASSED, 51 checks
- Without the dispose, 46i-ii is red after 45, as it was in CI
- Gate, measured together with #419 on top: 305 files, 4714 tests

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

src/editor/Editor.ts

@@ -429,7 +429,8 @@ export class Editor implements PlayHost {
       showBadge: (on) => this.toolbar.showRecording(on),
       badgeRoom: () => this.toolbar.recordingRoom(),
     });
-    useCursorFiles(app.renderer.events, app.canvas);
+    // Undone on dispose: the next session's editor shares the renderer and must find Pixi's own styles.
+    this.cleanups.push(useCursorFiles(app.renderer.events, app.canvas));
     this.play = new PlaySession(state, this);
     this.editorRun = new EditorRun(state, {
       // The game view is the one place where no key means anything to the editor, so that is where

src/editor/editorCursors.ts

@@ -10,15 +10,20 @@ import { generalSettings, onGeneralSettings } from './generalSettings';
 export function useCursorFiles(events: EventSystem, canvas: HTMLCanvasElement): () => void {
   const own = { ...events.cursorStyles };
   const files = Object.fromEntries(cursorKeywords().map((keyword) => [keyword, cursorCss(keyword)]));
-  const apply = (): void => {
+  const show = (custom: boolean): void => {
     const styles = events.cursorStyles;
     for (const keyword of Object.keys(styles)) delete styles[keyword];
-    Object.assign(styles, own, generalSettings().customCursor ? files : {});
+    Object.assign(styles, own, custom ? files : {});
     // Pixi sets a style only when the pointer's mode changes: the one showing now changes here.
     const keyword = cursorKeyword(canvas.style.cursor);
     const style = styles[keyword];
     canvas.style.cursor = typeof style === 'string' ? style : keyword;
   };
+  const apply = (): void => show(generalSettings().customCursor);
   apply();
-  return onGeneralSettings(apply);
+  const stopListening = onGeneralSettings(apply);
+  return () => {
+    stopListening();
+    show(false);
+  };
 }

tools/e2e/62-device-pixels.mjs

@@ -128,7 +128,7 @@ export async function devicePixels(t) {
       fixed.shown.w === 960 &&
       fixed.shown.h === 540 &&
       Array.isArray(rows) &&
-      rows.includes('Start recording'),
+      rows.includes('Start recording…'),
     JSON.stringify({ fixed, menu, rows }),
   );