v0.2.0 — skill update checker + ATECHPCS-fork divergence

First release published from the ATECHPCS/arc-relay fork. Continues the upstream comma-compliance/arc-relay v0.1.x line; v0.2.0 signals divergence and the skill-update-checker as the headline feature.

Highlights

• Skill update checker — opt-in skill upstream tracking with daily drift detection, LLM severity classification (gpt-4o-mini, with offline fallback)
• arc-sync skill subcommand — list, install, remove, sync, push
• arc-sync skill check-updates CLI for the new drift system
• Memory pivot — LLM extraction → mem0 with blended /recall, async + watcher quiescence + 30 min cron
• /download/<binary> defaults to this fork's releases (configurable via ARC_RELAY_DOWNLOAD_REPO env var)
• POST /api/skills/<slug>/check-drift admin endpoint
• Prometheus metrics: skill check counter + duration histogram

arc-sync binaries

Pre-built for 6 platforms (linux/darwin/windows × amd64/arm64). Install via the relay's /install.sh endpoint or download directly from this release.

Compatibility

Operators who want to keep pointing at the upstream release line: set ARC_RELAY_DOWNLOAD_REPO=comma-compliance/arc-relay in the relay's environment.