chore: Bump version to 0.30.5

Updated all component versions:
- bd CLI: 0.30.4 → 0.30.5
- Plugin: 0.30.4 → 0.30.5
- MCP server: 0.30.4 → 0.30.5
- npm package: 0.30.4 → 0.30.5

Changes in 0.30.5:
- Removed YAML simple template system (--from-template flag)
- Removed embedded templates (bug.yaml, epic.yaml, feature.yaml)
- Templates are now purely Beads-based

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.claude-plugin/marketplace.json

@@ -9,7 +9,7 @@
       "name": "beads",
       "source": "./",
       "description": "AI-supervised issue tracker for coding workflows",
-      "version": "0.30.4"
+      "version": "0.30.5"
     }
   ]
 }