How I Built an Idle Loop That Keeps My AI Agent Working Between Tasks

The Problem My AI agent was idle 90% of the time. Between my requests, it just sat there. GPU loaded, API connections open, doing absolutely nothing. That felt like leaving a factory running with no production line active. So I built a lightweight idle loop. Here's exactly how. The Architecture (3 Components) 1. Plan-Tree with Timestamps A markdown file that tracks every task with last-run timestamps: ## ENSURE_CONTINUATION [last: 2026-04-23 01:00 | 🔁] - Health checks (disk/RAM/process) [last: