v0.318.0: the internal data place, partitions, an honest whole-box backup offer (R-1084), sys_drive never offered (R-1082)

felhom.eu architecture/16 §4-§6 (build B). MinAgent 0.157.0 — the internal place and the partitions appear only when
agent >= 0.158.0 reports them. Tests red-proved; four parity fixtures refreshed (only the new lines).

Claude-Session: https://claude.ai/code/session_012qRErfCoiTkvDK9N5XHbzb

controller/internal/web/intermediary.go

@@ -313,6 +313,7 @@ func (s *Server) ReconcileDriveGates() {
 		return
 	}
 	s.reconcileEjectedDrives(ctx, agent, resp.Disks)
+	s.ensureInternalPlace(ctx, agent, resp.Disks) // v0.318.0 `16` §5: the one-disk box's data place, no press needed
 	for _, a := range planDriveGates(s.settings.GetStoragePaths(), resp.Disks) {
 		switch {
 		case a.Stop: