docs(README): enhance badge update documentation and improve npm badge

- Updated the npm version badge in `README.md` to explicitly display the current version dynamically.
- Added a new "Badge Maintenance" section to detail the automated badge update process during build or version changes.
- Enhanced `generate-version.js` script to improve badge update logic, ensuring the npm version badge reflects `package.json` accurately.
- Strengthened maintainability and accuracy of documentation for future updates.

README.md

@@ -6,7 +6,7 @@
 [![Node.js](https://img.shields.io/badge/node-%3E%3D23.11.0-brightgreen.svg)](https://nodejs.org/)
 [![TypeScript](https://img.shields.io/badge/TypeScript-5.1.6-blue.svg)](https://www.typescriptlang.org/)
 [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg)](CONTRIBUTING.md)
-[![npm](https://img.shields.io/npm/v/@soulcraft/brainy.svg)](https://www.npmjs.com/package/@soulcraft/brainy)
+[![npm](https://img.shields.io/badge/npm-v0.9.9-blue.svg)](https://www.npmjs.com/package/@soulcraft/brainy)
 
 [//]: # ([![Cartographer](https://img.shields.io/badge/Cartographer-Official%20Standard-brightgreen)](https://github.com/sodal-project/cartographer))
 
@@ -1269,6 +1269,17 @@ Brainy follows a specific code style to maintain consistency throughout the code
 3. Make your changes
 4. Submit a pull request
 
+### Badge Maintenance
+
+The README badges are automatically updated during the build process:
+
+1. **npm Version Badge**: The npm version badge is automatically updated to match the version in package.json when:
+   - Running `npm run build` (via the prebuild script)
+   - Running `npm version` commands (patch, minor, major)
+   - Manually running `node scripts/generate-version.js`
+
+This ensures that the badge always reflects the current version in package.json, even before publishing to npm.
+
 ## License
 
 [MIT](LICENSE)