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3,819 commits this week Apr 16, 2026 - Apr 23, 2026
Use UArray DefaultFun Bool for availability check in scriptCBORDecoder
The builtin availability check in `scriptCBORDecoder` was using
`Set DefaultFun` for O(log n) membership, with a TODO suggesting
`IntSet`. A `UArray DefaultFun Bool` is a better fit: since
`DefaultFun` derives `Ix`, lookup is a true O(1) unboxed array index
with no conversion at the lookup site.

The array is built once per call via `runSTUArray`, folding over the
`Set` through its `Foldable` instance (no intermediate list). The
array covers all ~100 `DefaultFun` constructors.
tracer-sidecar: rescan parent dir for late-arriving node subdirs
main() was snapshotting /opt/cardano-tracer/logs once at startup and
spawning one watcher per subdir present at that instant. Node subdirs
created *after* that snapshot (typical for producers that handshake
with the tracer slightly after the first relay, or for any node
restarted mid-run by Antithesis fault injection) were never tailed,
so their LogMessages never reached the Spec rules in Sidecar.hs. That
is why 'Sometimes: Any p{1,2,3} log' tripped on every run even though
the tracer was clearly writing those subdirectories to disk
(log-tailer, which polls independently, sees them fine).

Replace the one-shot listDirectory + forM with a forever loop that
maintains a Set of seen subdirs, spawns a watcher for each newly-seen
entry, and logs 'Tailing node log dir: <path>' as it does so. The
SDK 'reached' event for 'find log files' fires once, on the first
non-empty diff, preserving existing semantics for that assertion.

Verified locally: starting the sidecar with an empty logs dir and
then creating relay2, p1, p2, p3 subdirs one by one spawns a watcher
per subdir in order.

Fixes #50