Regenerate lifecycle migration after rebasing master

Master now owns migration numbers 0301 and 0302. Generate the lifecycle delivery schema as 0303, retain the atomic baseline and restore repair, and update migration references. The migration snapshot, lifecycle, and legacy restore tests pass.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

doc/DATABASE.md

@@ -523,7 +523,7 @@ retains events, so consumers must revalidate existence and eligibility and load
 current authorized repository data. A termination hook does not authorize
 provider cleanup without the plugin's own authorization and retention policy.
 
-Migration `0301_whole_venom.sql` seeds a one-time current-state baseline before
+Migration `0303_modern_mathemanic.sql` seeds a one-time current-state baseline before
 plugin delivery is available. It records creation for existing hired agents and
 all projects, including archived projects. Pending hires stay behind approval.
 Paused and terminated agents receive missing final status intents. A partial