docs(skills): use presence commands for current agent attention

[ark-archastro]

Review on ArchCode

Problem and author intent

Customer-installed ArchDev skills still direct presence through minimap ping and do not explain how agents should replace their current task, PR, or job attention. Teach the convenient commands introduced in firstlanding PR 15188, without requiring agents to construct snapshots.

What changed

• Route the core ArchDev monitor and Tasks execution workflow through presence update and presence clear.
• Explain full replacement, idle clearing, stable harness identity, organization-visible task restrictions, and superseded writes. Task leases and lifecycle history retain their existing behavior.
• Check command availability and document upgrade/unavailable behavior for older releases.

Scope: customer skill documentation only. Risk: low; no CLI, storage, installer, or permissions implementation changes. These instructions require a CLI release containing the new commands; older releases continue work with an explicit presence limitation.

Testing

• Both skills pass the skill-creator validator; git diff --check passes.
• Independent review checked guidance against the CLI implementation and identified the legacy Claude identity alias and an incorrect upgrade reference; both were corrected.
• No executable behavior changed or new tests added. This repository's existing Installer Smoke Test workflow runs on PRs but does not validate skill semantics. No live presence journey was rerun for this documentation change.

[chatgpt-codex-connector]

Codex Review Summary

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Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-09-24T22:04:51.421023Z	6897ce0	PR opened

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Reviewed commit: 6897ce007b

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