v0.1.1: change gecko.id to share-as-qr@addons.naiv.no, bump version

Move the extension ID off the dev-placeholder .local TLD onto the
naiv.no domain so it's stable for any future AMO submission. AMO locks
the ID for the lifetime of a listing, so this needs to happen before
the first listed upload — not after.

No code or behaviour changes. Lint and package both still clean
(0 errors / 0 warnings, ~12 KB zip).

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "share-as-qr",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "private": true,
   "description": "Firefox extension: share the current tab's URL as a QR code.",
   "license": "MIT",