Zapier

Build me a personal automation runner to replace Zapier, for the handful of pipelines I actually use. Requirements: - One Node process on my VPS: Express for incoming webhooks, node-cron for schedules. A pipeline is a plain JS file in pipelines/ exporting a trigger (cron expression or webhook path) and an async run(payload). - Steps are just code: fetch() calls to the APIs I need, every key in .env. Adding an integration means writing 20 lines, not finding a connector. - Every run logged to SQLite (better-sqlite3): pipeline, trigger payload, status, duration, error. Failures retry 3 times with exponential backoff via p-retry. - A /runs page (bound to localhost) showing the last 100 runs with status and an expandable payload/error view, plus a re-run button. - After the final failed retry, notify me via an ntfy topic in .env. - Webhook URLs include a per-pipeline secret token; reject anything else. - Ship two example pipelines: a cron one (daily 08:00, fetch a weather API, push to ntfy) and a webhook one (POST in, append a row to a CSV). - No accounts, no telemetry, no visual editor. - Out of scope: OAuth flows for third-party apps (token-based APIs only) and any connector catalog. A service that only offers OAuth will cost an afternoon each, say so in the README. - README: systemd unit, how to add a pipeline, .env layout.