vault-lifecycle-four-lane-model-post-archivist-removal
After Archivist removal, vault hygiene runs on four lanes: (1) real-time cascade on every vault_submit_* call, (2) cron hot cache refresh daily at 02:00 IST via vault-hot-cache.sh (0.02-0.05/session), (4) NOVA weekly structural sweep for broken links and frontmatter.