This is a maintenance detector for the Daily AI Agents OS skill library. It runs nightly at 03:00 CT, scanning the filesystem to flag any skill whose most recent file modification timestamp crossed the 25-day threshold. The use case is straightforward: if you're running a bundle of bash-based automation skills that depend on external APIs or evolving system state, you want to know which ones haven't been touched in nearly a month. Instead of manually auditing 200 skills, this surfaces staleness automatically. It's a cron-driven hygiene layer, not a runtime hook. You'd wire it into a Telegram alert or append findings to a weekly operations report.