mix threadline.continuity (Threadline v0.2.0)

Brownfield capture cutover helper — honest T0 semantics (see guides/brownfield-continuity.md).

There is no pre-trigger history: audit_changes remains empty until the first trigger-backed mutation after capture is installed.

Usage

mix threadline.continuity --dry-run
mix threadline.continuity --table my_app_table

With --dry-run, prints the cutover explanation only (no database writes).

With --table, validates the table exists in public and appears as {:covered, _} in Threadline.Health.trigger_coverage/1.