v0.297.0: burn-down round 2 — 24 small rows (R-591 R-568 R-567 R-363 R-547 R-10 R-552 R-251 R-104 R-619 R-362 R-675 R-256 R-257 R-240 R-365 R-425 R-565 R-564 R-603 R-454 R-208 R-457-swept) + the banner countdown and deepCopyStack twins; MinAgent 0.131.0

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

controller/internal/backup/offbox_restore.go

@@ -377,7 +377,7 @@ func (m *Manager) RestoreOffboxScratch(ctx context.Context, stack string, full b
 		}
 	}
 	if err := os.MkdirAll(scratch, 0o755); err != nil {
-		return fmt.Errorf("restore dir: %w", err)
+		return m.restoreDirError(scratch, err)
 	}
 	// R-358: a marker from a PREVIOUS run must never certify this one. Cleared here, before restic
 	// touches anything, so the window in which a stale certificate could vouch for a part-copy does not