Heron v0.7.2

[0.7.2] — 2026-08-15

Added

• sglake (sglog) storage backend. [storage] backend = "sglake" runs the
  whole console against a Splunk-compatible log platform, alongside DuckDB and
  ClickHouse — writes over the HTTP Event Collector, reads in SPL, all thirty
  StorageBackend methods. Unlike the SQL backends, stored request and response
  bodies are full-text searchable (search index=heron_bodies "SELECT * FROM users"). Retention is pushed as per-index TTLs rather than DELETE, since
  the store is append-only. heron sglake-props prints the index-time
  extraction stanzas that keep aggregates on the columnar path; they are
  generated from the event structs themselves, so they cannot drift from the
  schema. See docs/design/10-sglake.md, which also
  documents the known divergences — proxy pairing does not annotate traces on an
  append-only store.

Fixed

• Pagination could return the same row on two pages and skip another. Every
  paginated list ordered by a non-unique key (request_time most often) with no
  tie-break, and LIMIT/OFFSET issues one query per page, so the engine was
  free to order tied rows differently between them. Walking 26 spans that shared
  a timestamp five at a time returned 18 distinct rows. All paginated queries in
  the DuckDB and ClickHouse backends now end their sort with the row id.
• DuckDB truncated duration_ms on HTTP exchanges to whole milliseconds, so
  every sub-millisecond exchange showed 0.0. ClickHouse already computed it
  from microseconds.
• /api/metrics/timeseries could be asked for an unbounded number of
  buckets — a 7-day window at 10s granularity materialises 60,480 points per
  series. It now refuses above 20,000 and names a granularity that fits.

Changed

• The agent-trace panel switches to lazy per-call body loading above 50 calls
  rather than 200, measured against the real cost of answering with bodies.

What's Changed

• docs(readme): swap hero GIF to the live dashboard view by @vaderyang in #178
• feat(storage): sglake backend — full-text searchable bodies, and five defects it exposed by @vaderyang in #191
• ci(prod): production tracks releases, gated on a read-path smoke by @vaderyang in #192

Full Changelog: v0.7.1...v0.7.2