tracking: read the ledger's version, not just write it; clear owned on any block; channel-correct prune recovery

src/shell/persist/prune_fs.cpp

@@ -72,6 +72,7 @@ struct PruneScan {
     std::unordered_map<std::string, std::uint64_t> sizeByRel;
     bool blocked = false;
     bool ledgerUnreadable = false;
+    bool ledgerFutureVersion = false;
     std::vector<std::string> unreadableUsageKeys;
 };
 
@@ -134,6 +135,7 @@ PruneScan scanPruneOrphans(const BankBook& book, const tracking::OriginLedger& l
         // action tell the user what to recover.
         scan.blocked = true;
         scan.ledgerUnreadable = protection.ledgerUnreadable;
+        scan.ledgerFutureVersion = protection.ledgerFutureVersion;
         scan.unreadableUsageKeys = protection.unreadableUsageKeys;
         return scan;
     }
@@ -211,6 +213,7 @@ reclaim::PruneReport ReaSamplerSession::pruneDryRun() const {
     // the prune refused to run.
     report.blockedByTracking = scan.blocked;
     report.ledgerUnreadable = scan.ledgerUnreadable;
+    report.ledgerFutureVersion = scan.ledgerFutureVersion;
     report.unreadableUsageKeys = scan.unreadableUsageKeys;
     return report;
 }