chore: bump version to v0.5.0

Co-Authored-By: Claude Opus 4.5 <[email protected]>

VERSION

@@ -1 +1 @@
-0.4.3
+0.5.0

package.json

@@ -1,6 +1,6 @@
 {
   "name": "claude-code-hub",
-  "version": "0.4.0",
+  "version": "0.5.0",
   "private": true,
   "scripts": {
     "dev": "next dev --port 13500",