LakshyaR36/distributed-task-queue ? reverse-engineered prompt

Build me a distributed task queue app where users can submit background jobs through a simple API, check job status later, and schedule jobs to run in the future. I want it to support different priority levels so urgent jobs run first, and I want failed jobs to retry automatically a few times before being moved to a dead letter queue for review.

It should be reliable even if a worker crashes, so use a database for the real job state and a fast in memory queue for processing. Add worker heartbeats, locking so the same job is not run twice, and some basic rate limiting on the API. I also want a clean web dashboard that shows queue sizes, worker health, and recent task history in real time. Please include Swagger style API docs, Prometheus metrics, and a simple setup that runs locally with Redis and PostgreSQL. If you need to check current docs for anything, look them up online.