bust-kv-cache.mjs

#!/usr/bin/env node

// Bust the KV cache for likes/shares. Next read per post will rehydrate
// from Postgres.
//
// Usage:
//   npm run bust:kv                          # wipe all posts
//   npm run bust:kv -- --posts=12,34         # wipe specific post IDs
//   npm run bust:kv -- --dry-run             # preview without deleting

import fs from 'fs'
import path from 'path'
import { fileURLToPath } from 'url'
import { createClient } from '@vercel/kv'

const __filename = fileURLToPath(import.meta.url)
const __dirname = path.dirname(__filename)
const ROOT_DIR = path.resolve(__dirname, '..')

function loadEnvFile(file) {