shared: VECTOR_ZERO_TIME now reads VECTOR_ZERO_TIME_MS from env, defaults
to testnet genesis (1_752_057_484_000 ms). Mainnet deploys set
VECTOR_ZERO_TIME_MS=1756485600000. Existing testnet deployments unaffected
since env unset → testnet default. Patched in both lucidContext.ts (lucid
slot config override) and liveCbor.ts buildLiveTxForSubmit (submitted_at
slot-alignment).
deploy/mainnet: buyer host changed mp.vector.* → marketplace.vector.* per
operator-owned DNS. Indexer compose drops apex-net network (we point at
the hosted mainnet ogmios over public WSS, not via apex-dashboard-mainnet
which is not deployed on this box).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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