Stellar Index v0.5.0-rc.116

[v0.5.0-rc.116] — 2026-06-18

Changed

• Account-state + asset-holder reads use a current-state projection. New
  stellar.ledger_entries_current (ReplacingMergeTree fed by a materialized
  view on ledger_entry_changes) holds the latest entry per key; the readers
  query it FINAL via account_id/asset skip-indexes (~1 row per live entry)
  instead of a GROUP BY over all history. Keeps holders/account-state fast as
  the backfill scales the lake — unblocks the full genesis re-derive.