TriggerRepo::list_for_app selected parent rows then called
hydrate_one(...) per row serially — one SELECT against the kind-
specific details table per trigger. For N triggers on an app, that's
N+1 queries serialized on every dashboard `GET /apps/{id}/triggers`.
This commit shrinks the wall-clock cost via buffered concurrency
(`try_buffered(8)`): each row's details fetch still runs but they run
in parallel up to a small fan-out cap. Cuts dashboard load time from
sum(N latencies) to max(N latencies) / 8.
Collapsing to a single per-kind LEFT JOIN (the audit's preferred shape)
would cut the query count to ~7 — large enough to defer to v1.2 as
documented in the inline comment.
AUDIT.md anchor: F-P-008 (partial: wall-clock only; round-trip count
deferred).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
c80ee194f2