Seed leases respect the backfill's disk limits

No new range while the database's NVMe part or the hdd tablespace is over
BACKFILL_MAX_NVME_GB / BACKFILL_MAX_HDD_GB; nodes ask again a minute later.
seed:status says when leasing is paused. The NVMe part was at 47 GB of 50
with a plan for all of a.b.ath queued.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

commands/SeedStatus.ts

@@ -21,5 +21,6 @@ export default class SeedStatus extends BaseCommand {
       this.logger.info(`node ${node.name}${node.disabled ? ' (disabled)' : ''}: ${node.leases} leases, ${n(node.headers)} headers, last seen ${node.last_seen_at ?? 'never'}`)
     }
     this.logger.info(`Headers in ranges finished in the last hour: ${n(status.headersDoneLastHour)}`)
+    if (status.paused) this.logger.warning(`No new leases: ${status.paused} (BACKFILL_MAX_NVME_GB / BACKFILL_MAX_HDD_GB).`)
   }
 }