feat: enhance manual release workflow with automatic release notes

- Add automatic release notes generation from commit history
- Categorize commits into Features, Bug Fixes, and Maintenance
- Include installation instructions and changelog links
- Add preview-release-notes script for testing
- Update GitHub release creation to use generated notes

package.json

@@ -35,6 +35,7 @@
     "lint:fix": "eslint . --ext .js,.cjs,.mjs,.yaml --fix",
     "list:agents": "node tools/cli.js list:agents",
     "prepare": "husky",
+    "preview:release": "node tools/preview-release-notes.js",
     "validate": "node tools/cli.js validate",
     "version:all": "node tools/bump-all-versions.js",
     "version:all:major": "node tools/bump-all-versions.js major",