Document inspection architecture

docs/policy/architecture.md

@@ -5,16 +5,18 @@ durable development boundaries.
 
 ## System Shape
 
-Scriptorium is an executable application with three entry paths: CLI `run`, CLI
-`render`, and the HTTP service started by `serve`. It does not expose a reusable
-root Go package.
+Scriptorium is an executable application with four command entry paths: CLI
+`run`, CLI `render`, CLI `inspect`, and the HTTP service started by `serve`.
+The `inspect` command has prompt and profile modes. Scriptorium does not expose
+a reusable root Go package.
 
 The application consumes
 [Promptkit v0.9.0](https://gitea.maximumdirect.net/eric/promptkit/src/tag/v0.9.0/docs/consumers/pkg-promptkit.md)
 through its supported root package. Promptkit owns prompt execution,
 preparation, source formats, built-in profiles, model-client behavior, and
 validation. Scriptorium owns application configuration, executable adapters,
-prepared-run presentation, process behavior, and HTTP deployment policy.
+prepared-run and definition-inspection presentation, process behavior, and HTTP
+deployment policy.
 
 The concrete package inventory is maintained in the
 [internal overview](../internal/overview.md).
@@ -53,7 +55,8 @@ invariants.
 - `internal/config` owns discovery and strict decoding of Scriptorium
   application configuration.
 - `internal/defaults` owns Scriptorium application and HTTP defaults only.
-- `internal/format` owns deterministic prepared-run text and JSON presentation.
+- `internal/format` owns deterministic prepared-run and definition-inspection
+  text and JSON presentation.
 - Promptkit owns framework orchestration and contracts. Its
   [format reference](https://gitea.maximumdirect.net/eric/promptkit/src/tag/v0.9.0/docs/formats.md)
   and