HZL: Persistent task ledger for agents

HZL (https://hzl-tasks.com) is a local-first task ledger that agents use to:

• Plan multi-step work into projects + tasks
• Checkpoint progress so work survives session boundaries
• Route work to the right agent via project pools
• Coordinate across multiple agents with leases and dependencies

This skill teaches an agent how to use the hzl CLI.

When to use HZL

OpenClaw has no native task tracking. Unlike Claude Code (which has TodoWrite) or Codex (which has update_plan), OpenClaw relies on memory and markdown files for tracking work. HZL fills this gap.