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.

docs/internal/overview.md

@@ -25,6 +25,7 @@ physical state roots.
 | Area | Implemented owners | Responsibility |
 | --- | --- | --- |
 | Executable and command boundary | **cmd/notarius**, **internal/cli** | Process entry, command dispatch, configuration discovery, production composition, runtime collaborator setup, durable file placement, and user-facing reporting. |
+| Build information | **internal/buildinfo** | Resolves a stable linked release tag or build metadata for the diagnostic root version command. |
 | Configuration | **internal/core/config** | Defaults, strict YAML parsing, environment overrides, structural validation, effective resolution, redaction, and resolved-composition summaries. |
 | Generic models | **internal/core/source**, **internal/core/artifacts**, **internal/framework/contracts** | Source documents and chunks, manifests and provenance, plus typed artifact, reference, validation, output, and structured-completion contracts. |
 | Pipeline framework | **internal/framework/pipeline** | Registries, profile and reference resolution, typed preparation, validation, retry coordination, ordered execution, handoff, and result assembly. |

docs/operations.md

@@ -5,6 +5,23 @@ This is the canonical guide for operating Notarius runtime state. The
 [Configuration](config.md) owns fields, defaults, and precedence. Maintainers
 who need implementation mechanics should read [Run State Internals](internal/state.md).
 
+## Source Deployment
+
+Linux is the supported deployment platform. Install a pinned source release
+with the Go version declared in `go.mod` (currently Go 1.25.5):
+
+~~~sh
+GOWORK=off go install \
+  gitea.maximumdirect.net/eric/notarius/cmd/notarius@vMAJOR.MINOR.PATCH
+~~~
+
+Pin the exact tag in deployment automation rather than following a branch.
+Use [`notarius --version`](cli.md#command-summary) as a diagnostic after
+installation; its syntax and semantics are owned by the [CLI reference](cli.md).
+The maintainer publication process, including tag guards and verification,
+belongs to [Source Releases](release.md). macOS builds are best-effort for
+development, and Windows is unsupported.
+
 ## State Surfaces
 
 Each run can use independent roots with different retention and access-control

docs/policy/architecture.md

@@ -261,6 +261,16 @@ contain application data and therefore inherits its sensitivity; operators own
 access controls and retention. Physical layout and operation are defined in
 [Operations](../operations.md).
 
+## Platform And Distribution
+
+Linux is the supported deployment platform. macOS is supported only as a
+best-effort development and compilation environment, while Windows is
+unsupported. Notarius distributes source releases only: an immutable source
+tag and its checked-in release note identify a release. The project does not
+publish executable binaries, archives, installers, container images,
+checksums, signatures, or package-manager entries. Maintainer release commands
+and tag guards belong to [Source Releases](../release.md).
+
 ## Architectural Non-Goals
 
 Notarius does not aim to provide:

docs/roadmap/implementation.md

@@ -314,7 +314,7 @@ home.
   matrix.
 - No historical or placeholder release note is introduced.
 
-## Stage 5: Align Platform, Installation, And Operational Documentation
+## Stage 5: Align Platform, Installation, And Operational Documentation ✅
 
 ### Goal