Add D&D extraction fallback profile

docs/integrations/pkg-promptkit.md

@@ -13,7 +13,7 @@ owns prompt, profile, and schema file contracts.
 Notarius relies on the root `promptkit` package to:
 
 - construct an `Engine` with filesystem-backed prompt, schema, and optional
-  profile sources;
+  operator and application-fallback profile sources;
 - prepare one frozen execution from a `RunRequest` with named inline artifacts,
   variables, a direct session ID, prompt identity, and profile selection, then
   record credential-redacted details and run that exact execution;
@@ -69,6 +69,8 @@ error type, and leaves retries to the calling pipeline stage.
 module assets, maps its transport-neutral completion contract, prepares and
 executes requests, validates output, records provenance, captures debug
 material, redacts errors, and preserves timeout ownership.
+[D&D Module Internals](../internal/dnd.md) owns the embedded
+`dnd-extraction` fallback profile and the maintained D&D prompt defaults.
 [Configuration](../config.md#promptkit-profiles) defines how a Notarius
 configuration selects one PromptKit profile source and optionally registers
 the conventional local backend.