release: 2.12.0: test-email - a test message from Server › Health

Cut without asking, as the owner said on 2026-10-15. A global user sends
one message from postmaster@ the hostname to an address typed; it opens in
the Outbound log, which follows it (the commit before this; mockups
e92769f, e3b2501, 8f0ccf9). Reviewed for security, its low findings fixed.
go vet, go test (26 packages) and make e2e passed on the test server for
that tree. No migration, schema 12.

CHANGELOG [2.12.0]; pins in deploy/docker-compose.yml, README and the guide
(pin, build, the sample restore message); development's "from pin" and
row 38; roadmap row. No tag.

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

CHANGELOG.md

@@ -5,6 +5,10 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); version
 
 ## [Unreleased]
 
+## [2.12.0] - 2026-10-17
+
+A test message from Server › Health. No migration; schema 12.
+
 ### Added
 
 - **A test message from Server › Health** (test-email): one message to an