feat: add versioning and release automation

- Add semantic-release with changelog and git plugins
- Add manual version bump script (patch/minor/major)
- Add GitHub Actions workflow for automated releases
- Add npm scripts for version management
- Setup .releaserc.json for semantic-release configuration

tools/version-bump.js

@@ -0,0 +1,72 @@
+#!/usr/bin/env node
+
+const fs = require('fs');
+const { execSync } = require('child_process');
+const chalk = require('chalk');
+
+/**
+ * Simple version bumping script for BMAD-METHOD
+ * Usage: node tools/version-bump.js [patch|minor|major]
+ */
+
+function getCurrentVersion() {
+  const packageJson = JSON.parse(fs.readFileSync('package.json', 'utf8'));
+  return packageJson.version;
+}
+
+function bumpVersion(type = 'patch') {
+  const validTypes = ['patch', 'minor', 'major'];
+  if (!validTypes.includes(type)) {
+    console.error(chalk.red(`Invalid version type: ${type}. Use: ${validTypes.join(', ')}`));
+    process.exit(1);
+  }
+
+  console.log(chalk.blue(`🔄 Bumping ${type} version...`));
+  
+  // Use npm version to bump and create git tag
+  try {
+    const newVersion = execSync(`npm version ${type} --no-git-tag-version`, { encoding: 'utf8' }).trim();
+    console.log(chalk.green(`✅ Version bumped to ${newVersion}`));
+    
+    // Stage the package.json change
+    execSync('git add package.json');
+    
+    // Create commit and tag
+    execSync(`git commit -m "chore: bump version to ${newVersion}"`);
+    execSync(`git tag -a ${newVersion} -m "Release ${newVersion}"`);
+    
+    console.log(chalk.green(`✅ Created git tag: ${newVersion}`));
+    console.log(chalk.yellow(`💡 Run 'git push && git push --tags' to publish`));
+    
+    return newVersion;
+  } catch (error) {
+    console.error(chalk.red('❌ Version bump failed:'), error.message);
+    process.exit(1);
+  }
+}
+
+function main() {
+  const type = process.argv[2] || 'patch';
+  const currentVersion = getCurrentVersion();
+  
+  console.log(chalk.blue(`Current version: ${currentVersion}`));
+  
+  // Check if working directory is clean
+  try {
+    execSync('git diff-index --quiet HEAD --');
+  } catch (error) {
+    console.error(chalk.red('❌ Working directory is not clean. Commit your changes first.'));
+    process.exit(1);
+  }
+  
+  const newVersion = bumpVersion(type);
+  
+  console.log(chalk.green(`\n🎉 Version bump complete!`));
+  console.log(chalk.blue(`📦 ${currentVersion} → ${newVersion}`));
+}
+
+if (require.main === module) {
+  main();
+}
+
+module.exports = { bumpVersion, getCurrentVersion };