feat(devices): edit known devices (rename/regroup/delete) → 2.1.2

Known device tiles get a ✎ edit affordance using the existing PATCH/DELETE
/api/devices/:mac endpoints. Previously devices could only be named at promote time.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "void-server",
-  "version": "2.1.1",
+  "version": "2.1.2",
   "type": "module",
   "private": true,
   "scripts": {