chore: bump plugin version to 4.1.0

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "superpowers",
   "description": "Core skills library for Claude Code: TDD, debugging, collaboration patterns, and proven techniques",
-  "version": "4.0.3",
+  "version": "4.1.0",
   "author": {
     "name": "Jesse Vincent",
     "email": "jesse@fsck.com"