maintenance workflows

Turn noisy, time-critical Linux maintenance into a safe, repeatable workflow by wiring AI into Bash you can trust: a reusable ai_ask function (Ollama or OpenAI), scripts for log triage, risk-aware update briefs, and sshd hardening with validation (lint/test/diff/backup/rollback), plus a daily report via cron—keeping advice sandboxed, auditable, and deterministic while boosting signal and speed.