First public release

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

CHANGELOG.md

@@ -0,0 +1,16 @@
+# Changelog
+
+## 0.1.0 - 2026-09-28
+
+First public release under MIT.
+
+- `keyVerdict()` checks a signing key at both origin and arrival;
+  `expired-in-flight` is its own verdict, accepted and recorded.
+- Revocation applies regardless of origin time.
+- `assessStream()` returns `apply` in sender-sequence order, never arrival
+  order.
+- A duplicate fails when the receiver is not idempotent and is accepted when
+  it is.
+- A message beyond `maxTransitSeconds` is rejected for action.
+- A message received before it was sent is NOT ASSESSED.
+- `now` is never read: the same trace gives the same verdicts.