chat: clicking the title goes back to the conversation list

Same path as the back-caret — a bigger, easier target than the
icon. No-op when already on the list.

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

electron/package.json

@@ -1,6 +1,6 @@
 {
   "name": "hyprcrd",
-  "version": "1.9.10",
+  "version": "1.9.11",
   "description": "hyprcrd — self-hosted card manager",
   "main": "main.js",
   "scripts": {