Rates Engine v0.5.0-rc.78

[v0.5.0-rc.78] — 2026-05-26

Added

• soroban_events raw-event landing zone (ADR-0029). Every
  Soroban contract event the dispatcher routes is now also
  captured to a new soroban_events hypertable as a raw row
  (contract_id + topics-as-XDR + body-as-XDR + op_args-as-XDR
  when applicable, plus a decoded topic_0_sym for the common
  Symbol/String case). Additive — existing per-source decoders
  (trades, blend_auctions, etc.) continue to write their
  domain-specific tables unchanged. Unblocks: future per-source
  decoder backfills (Blend money-market, CCTP+Rozo, Comet/
  Phoenix/Soroswap gaps, plus every protocol we add ever) are
  now INSERT … SELECT FROM soroban_events SQL queries rather
  than MinIO walks. New backfill mode:
  ratesengine-ops backfill -source soroban-events -from N -to M
  populates the table for historical ranges without per-source
  decoding overhead. Compression after 7 days, segment-by
  contract_id. Initial estimated volume ~100-400 GB across the
  full Soroban era.

Fixed

• fd-2 wrap drain-on-exit (#62a / regression in rc.77). The
  rc.77 SilenceSDKChecksumWarnings wrap (the actual fix for the
  SDK checksum WARN flood that the rc.72 env-var fix never
  achieved) silenced the noise for long-running daemons but
  dropped output entirely for short-lived processes — a
  consequence of the consumer goroutine reading from the pipe in
  the background, never given a chance to drain before
  os.Exit() killed it. Manifest: ratesengine-ops backfill -dry-run printed only the first line then ate the rest;
  ratesengine-ops backfill errors printed nothing —
  diagnosable only by binary-rollback to rc.76. The wrap now
  returns a flush func() that dup2's the saved real-stderr
  back onto fd 2, closes the pipe writer, and waits on the
  consumer's WaitGroup. main() in cmd/ratesengine-indexer and
  cmd/ratesengine-ops is now a thin os.Exit(realMain())
  shim — defers (including defer flush()) run inside realMain
  before main calls os.Exit with the returned code, so even
  error paths drain the pipe.