WP-0005 T04/T09: note forgejo-backup automation in railiance-platform

Makefile targets and operator doc landed; cron and 7-day gate remain.

docs/forgejo-restore-drill-evidence.md

@@ -70,8 +70,8 @@ Script exit marker: `restore-drill-complete`
   (`kubectl cnpg` plugin absent on workstation).
 - **Encryption at rest:** dump stored locally on workstation for drill only; no
   approved backup target wired.
-- **Automation:** `forgejo dump` is manual; T04/T09 still need cron/operator
-  schedule and retention policy (T02 decision).
+- **Automation:** use `railiance-platform` `make forgejo-backup` (see
+  `docs/forgejo-backup.md`); operator cron still required for daily schedule.
 - **Re-run hygiene:** concurrent or repeat runs require `DRILL_CLEAN=1` to wipe
   `forgejo-restore-drill` before import (SQL import is not idempotent).