feat(status): expose heartbeat journal progress - #26
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Track the latest durable journal sequence on the run heartbeat and expose it through LoopStatus and the CLI so repeated snapshots distinguish liveness from progress. Preserve compatibility with records written before progress-bearing heartbeats. Fixes loop-js#5
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Summary
LoopStatus.progressSeqandloop statusWhy
A fresh heartbeat proves liveness but not progress. Repeated status snapshots now show whether the durable event stream is advancing, which gives future watchdog/takeover logic a reliable progress signal. Stream-only reserved sequence numbers do not count as durable progress.
Verification
master: missingJournal.lastSeq, missing heartbeatseq, and status omitted journal progressbun run checkbun test: 423 passed, 2 intentional live-Claude tests skipped, 0 failedgit diff --checkFixes #5