new-bucket dialog: Enter in name field submits

Typing a name and hitting Enter did nothing — users had to move to
the Create button. Wire Enter on the name input to click the submit
path so the common flow is keyboard-only.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

electron/package.json

@@ -1,6 +1,6 @@
 {
   "name": "hyprcrd",
-  "version": "1.9.8",
+  "version": "1.9.9",
   "description": "hyprcrd — self-hosted card manager",
   "main": "main.js",
   "scripts": {