feat: initialize gomdown-helper with yt-dlp transfer flow

scripts/version-bump.mjs

@@ -0,0 +1,24 @@
+import fs from 'node:fs'
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+
+const rootDir = path.resolve(path.dirname(fileURLToPath(import.meta.url)), '..')
+const packageJsonPath = path.join(rootDir, 'package.json')
+
+const pkg = JSON.parse(fs.readFileSync(packageJsonPath, 'utf8'))
+const current = String(pkg.version || '')
+const matched = /^(\d+)\.(\d+)\.(\d+)$/.exec(current)
+
+if (!matched) {
+  console.error(`[version-bump] invalid semver in package.json: ${current}`)
+  process.exit(1)
+}
+
+const major = Number(matched[1])
+const minor = Number(matched[2])
+const patch = Number(matched[3]) + 1
+const next = `${major}.${minor}.${patch}`
+
+pkg.version = next
+fs.writeFileSync(packageJsonPath, JSON.stringify(pkg, null, 2) + '\n')
+console.log(`[version-bump] ${current} -> ${next}`)