Stellar Index v0.35.0

[v0.35.0] — 2026-08-16

Tested against Stellar protocol v23. Applies migration 0144 (additive,
old-binary-safe — a new singleton table, no re-login, no data change).

Fixed

• XLM circulating-supply refresh no longer falsely freezes during quiet
  periods. The supply freshness gate anchored on MAX(ledger) over
  account_observations, which only rows on a watched SDF-reserve-account
  balance change — so any market-quiet stretch beyond the ~1-day dormancy
  horizon made the anchor go stale and the gate fail closed, freezing XLM
  supply and firing a continuous supply_refresh_error_dominant ticket (which
  in turn masked a genuine future observer death). The served value was always
  correct — only its freshness signal was wrong. The gate now anchors on a true
  per-tick observer watermark (new account_observer_watermark table, migration
  0144), advanced every ledger by the indexer: a healthy-but-quiet observer
  stays fresh, a genuinely dead observer still trips the gate. Found only by a
  live audit of r1 — the code looked correct; the live quiet-reserve state
  triggered the latent flaw.