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985a194bdc
Replace the old ltEXPORTED_TXN + ttEXPORT_FINALIZE (validation-based sigs, TxQ injection) approach with a retriable ttEXPORT that collects validator signatures via TMProposeSet during consensus. Added: - terRETRY_EXPORT: keeps tx in retry set across ledger boundaries - tecEXPORT_EXPIRED (200): LLS expiry frees sequence cleanly - sfExportResult (OBJECT 98): signed export result in tx metadata - ExportSigCollector: minimal thread-safe sig tracker - Proposal sig attachment (RCLConsensus) + harvesting (PeerImp) - exportSignatures field in TMProposeSet (ripple.proto) - Metadata plumbing (TxMeta, ApplyViewImpl, ApplyStateTable) - Hook xport() now emits ttEXPORT via normal emitted txn path Removed: - ttEXPORT_FINALIZE (type 90) pseudo-tx and Change::applyExportFinalize - ltEXPORTED_TXN ledger entry and exportedDir/exportedTxn keylets - ExportSignatureCollector (replaced by ExportSigCollector) - TxQ export injection (quorum check + rawTxInsert) - Validation-based export signing in RCLConsensus - Application::getExportSignatureCollector Verified on 5-node testnet: golden path (same-ledger finalization with ExportResult in metadata), degraded path (tecEXPORT_EXPIRED on sub-quorum), and hook xport() path (emitted ttEXPORT with shadow ticket creation).