Fleet audit: createdBy/At + deletedBy/At + changelog/archive coverage on every table

Elazar directive (2026-07-17, via pm-pluto-cc / PLUTO-544 design review). Policy: EVERY table fleet-wide must have createdBy + createdAt, deletedBy + deletedAt, and appropriate changelog/archive tables. SCOPE (fleet-wide, per-app subtasks): audit every table in each app's prod schema for (1) missing createdBy/createdAt columns, (2) missing deletedBy (deleted-actor) tracking - many apps have deletedAt but not deletedBy, (3) missing changelog and/or archive-table coverage per the archive design (shared/md/evolutiva-archive.md). Report gaps per app, then close them (Class-A: schema DDL + backfill of actor columns - db-lane owns, full-team + audit). Phase 1 = inventory/gap-report only; column-add + backfill decisions come back to PM/Elazar before DDL.