Document source release deployment

README.md

@@ -28,6 +28,20 @@ For the complete ordered D&D workflow, use
 [its synthetic transcript](examples/dnd-complete-transcript.json). It
 demonstrates all implemented D&D lanes and the supporting campaign references.
 
+## Install A Source Release
+
+Install a pinned source release with Go:
+
+~~~
+GOWORK=off go install \
+  gitea.maximumdirect.net/eric/notarius/cmd/notarius@<tag>
+~~~
+
+Replace `<tag>` with a stable release tag such as `vMAJOR.MINOR.PATCH`. The
+installed command's diagnostic version is described in the [CLI
+reference](docs/cli.md); maintainers preparing a release should follow [Source
+Releases](docs/release.md).
+
 ## Documentation
 
 - [CLI reference](docs/cli.md) — commands, flags, output streams, and exits.