Daily Update

Runs a full maintenance pass over your Obsidian wiki: checks which sources are stale, reconciles the index with actual vault pages, regenerates hot.md if it's older than 48 hours, and writes state files that power a terminal notification when your wiki falls behind. Comes with launchd setup to run at 9 AM daily. The vault-scoped state directory is smart, supports multiple vaults independently using an MD5 hash of the vault path. Spawns impl-validator as a subagent after each run to verify artifacts before logging. Use it when you say "/daily-update" or "morning sync", or let the cron handle it. The terminal notification piece is optional but ties the whole thing together if you want a gentle nudge when sources drift.