Release 1.1.0

Version bump, the README line about units, and two new manual checks in the release checklist (export then New invoice
through the real save dialog, and units).

Claude-Session: https://claude.ai/code/session_01PZypiWDfMkDTeEPeXjRhW5

package.json

@@ -1,7 +1,7 @@
 {
   "name": "voiced",
   "private": true,
-  "version": "1.0.2",
+  "version": "1.1.0",
   "license": "Apache-2.0",
   "description": "Voiced — offline invoicing desktop app by Bongbetic",
   "type": "module",