chore: Bump version to 0.41.0

Update version across all components:
- cmd/bd/version.go
- .claude-plugin/plugin.json, marketplace.json
- npm-package/package.json
- integrations/beads-mcp/pyproject.toml
- Git hook templates

🤖 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": "0.40.0"
+      "version": "0.41.0"
     }
   ]
 }