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/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": "0.40.0",
+  "version": "0.41.0",
   "author": {
     "name": "Steve Yegge",
     "url": "https://github.com/steveyegge"