0.18.1: editor-hide cascades to groups + rename for layers & clip tracks

Track groups get the same editor-hide affordance as layer and clip
tracks: new eye button on the group header, setGroupEditorHidden
action (clears selection pointing inside the group), and a cascade
through the Konva stackItems + render.ts so every child track in a
hidden group vanishes in the editor.

Track renaming via right-click context menu now covers layers and
clip tracks too — setLayerName / setClipTrackName actions, new i18n
strings, and end-to-end UI tests driving the menu → promptDialog →
rename flow.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -1,7 +1,7 @@
 {
   "name": "ruwio",
   "private": true,
-  "version": "0.18.0",
+  "version": "0.18.1",
   "type": "module",
   "scripts": {
     "dev": "vite",