Switch CLI configuration to ConfigKit

docs/policy/architecture.md

@@ -32,6 +32,12 @@ validation. Scriptorium owns application configuration, executable adapters,
 prepared-run and definition-inspection presentation, process behavior, and HTTP
 deployment policy.
 
+Scriptorium also consumes ConfigKit v0.4.0 for application configuration
+decoding, resolution, and validation flow. Scriptorium owns its application
+schema, defaults, normalization, validation rules, source selection, and CLI
+flag mapping; ConfigKit does not own Promptkit framework sources or HTTP
+artifact containment.
+
 The concrete package inventory is maintained in the
 [internal overview](../internal/overview.md).
 
@@ -54,7 +60,7 @@ cmd/scriptorium
 CLI and HTTP adapters, configuration, defaults, and formatting
         |
         v
-gitea.maximumdirect.net/eric/promptkit
+Promptkit (execution) and ConfigKit (application configuration)
 ```
 
 - Retained application packages may import Promptkit's root package.
@@ -80,8 +86,8 @@ vendored Promptkit implementation, or unpublished dependency assumptions.
   process streams, output files, summaries, and exit codes.
 - `internal/adapter/http` owns routes, strict JSON DTOs, size limits, response
   mapping, status mapping, and the restricted artifact reader.
-- `internal/config` owns discovery and strict decoding of Scriptorium
-  application configuration.
+- `internal/config` owns discovery and Scriptorium's application definition;
+  ConfigKit owns strict YAML decoding and the load/override pipeline.
 - `internal/defaults` owns Scriptorium application and HTTP defaults only.
 - `internal/format` owns deterministic prepared-run and definition-inspection
   text and JSON presentation.