chore: bump version to 0.30.7

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

.claude-plugin/plugin.json

@@ -1,7 +1,7 @@
 {
   "name": "beads",
   "description": "AI-supervised issue tracker for coding workflows. Manage tasks, discover work, and maintain context with simple CLI commands.",
-  "version": "0.30.6",
+  "version": "0.30.7",
   "author": {
     "name": "Steve Yegge",
     "url": "https://github.com/steveyegge"