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

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

npm-package/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@beads/bd",
-  "version": "0.40.0",
+  "version": "0.41.0",
   "description": "Beads issue tracker - lightweight memory system for coding agents with native binary support",
   "main": "bin/bd.js",
   "bin": {