Stellar Index v0.30.0

[v0.30.0] — 2026-08-08

Fixed

• /v1/price/stream no longer interleaves aggregation windows on
  one topic (cold audit 2026-08-03, r1-confirmed: three consecutive
  price_update events carried window_seconds 300/3600/86400 with
  materially different prices, so a client reading value_decimal saw
  the price flap three times per tick). The Hub topic key now includes
  the window (closed:<asset>/<quote>/<window_seconds>) and the
  stream accepts ?window_seconds= (default 300) to pick one series.
  Also fixed: subscribing with an alias spelling (?asset=native vs
  the aggregator's crypto:XLM) silently matched nothing forever —
  the handler now subscribes to every alias spelling of the pair.

• /v1/observations (+ its stream) now scans every alias spelling
  of the pair — CEX observations live under crypto:XLM while SDEX
  legs live under native, so a ?asset=native query was silently
  blind to the CEX rows (and vice versa). Alias results merge keeping
  the newest trade per source; single-spelling pairs still do one scan.

• /v1/price/stream events now carry the documented /v1/price
  envelope shape from BOTH producers (data + as_of; flags /
  sources only when evaluated). Previously the aggregator bridge
  emitted {asset, quote, window_seconds, value_decimal, observed_at}
  and streampublish emitted {snapshot, sources, stale} — two bespoke
  shapes on one endpoint, neither matching the OpenAPI example. No
  fabricated flags: an absent flags object means "not evaluated",
  never "fresh". as_of is the bucket end, keeping cross-region
  payloads byte-identical (ADR-0015).

• /v1/price/tip/stream now shares one tip-compute loop per
  distinct (asset, quote, window) across all connections via the
  streaming Hub, instead of running a private 5-second query loop per
  connection (cold audit 2026-08-04: "tip stream = 6 DB queries/s PER
  CONNECTION — pool saturates at ~2300 streams"). Steady-state DB cost
  now scales with distinct pairs being watched, not with viewer count;
  producers linger 30 s after their last subscriber leaves to absorb
  reconnects, and Hub resume (Last-Event-ID) now works on the tip
  stream. Per-connection pre-flight verdicts (404 / withheld / 400)
  and the instant first frame are unchanged. Hub-less deployments keep
  the legacy per-connection producer. This is the scaling precondition
  for the explorer's live-ticking pages (RT-1).

• The accounts hub's most-held chart no longer includes native XLM —
  every funded account holds XLM by definition, so charting it
  collapsed the issued-asset bars to slivers.

• CI's web advisory gate: pnpm override floors raised for four fresh
  high GHSAs (nanoid, undici, brace-expansion, js-yaml — the prior
  js-yaml range >=4.2.0 <4.3.0 excluded the patched 4.3.1).

Added

• Explorer live ticks (RT-2): a shared SSE multiplexer
  (web/explorer/src/lib/live/) — one refcounted EventSource per
  endpoint per tab, slow reopen on hard failure (WB-04) — now powers a
  live network heartbeat in the sidebar (latest closed ledger, pulsing,
  linking to its /ledgers page) and live tip-price streaming on asset
  pages: the headline price ticks in real time with an up/down flash
  and a "live tip price · streaming" caption, degrading to the
  existing 60s poll + baked value when the stream is unavailable.
  The home strip's XLM cell and the market-pair headline (previously
  a BUILD-frozen price captioned "as of ") stream the
  same way, and /ledgers + /operations follow the network live: new
  rows animate in on every ledger close while page 1 is on screen
  (paging into history pauses following). The markets board follows
  ledger closes with a throttled refresh and per-cell price flashes —
  one SSE connection for the whole table. Animations respect
  prefers-reduced-motion.
• Contract activity card (insight program unit 1): every contract
  page shows first-seen / last-seen ledgers, lifetime active-ledger
  count, and a 30-day activity sparkline — µs reads off the
  contract-keyed contract_active_ledgers index.