Support inherited PromptKit profiles

docs/config.md

@@ -132,7 +132,11 @@ model: example-model
 Keep credentials out of the local-backend object. A PromptKit profile may name
 its credential environment variable through `api_key_env`; set that variable
 only in the run environment. PromptKit owns the
-[pinned profile-file format](https://gitea.maximumdirect.net/eric/promptkit/src/tag/v0.5.0/docs/formats.md).
+[pinned profile-file format](https://gitea.maximumdirect.net/eric/promptkit/src/tag/v0.8.0/docs/formats.md),
+including `base_profile` inheritance. Notarius passes profiles through without
+merging them. Filesystem profiles cannot express PromptKit's in-memory
+`APIKeyRequired` setting; an unset `api_key_env` is optional and may reach the
+provider without authorization.
 The [PromptKit upstream boundary](integrations/pkg-promptkit.md) identifies the
 supported package API, and [Operations](operations.md#operational-limits)
 describes the effective concurrency layers.

docs/integrations/pkg-promptkit.md

@@ -84,6 +84,12 @@ configuration and deployment workflow are defined in
 [Configuration](../config.md#promptkit-profiles) and
 [Operations](../operations.md#promptkit-profile-deployment).
 
+PromptKit owns `base_profile` resolution under its
+[pinned format rules](https://gitea.maximumdirect.net/eric/promptkit/src/tag/v0.8.0/docs/formats.md).
+Notarius records the selected leaf identity and resolved target without parsing
+or merging inheritance. An unset filesystem `api_key_env` is optional and may
+reach the provider without authorization, which can result in a 401 or 403.
+
 Notarius supports this boundary against PromptKit v0.8.0. Its fallback source,
 prepared-execution, inspection, and typed capacity APIs are used as public
 upstream contracts; other PromptKit APIs or file-format behavior are not

docs/internal/llm.md

@@ -75,7 +75,7 @@ backend membership as runtime without performing generation. Fallback assets
 are mounted only when at least one source is registered. The production D&D
 registrar contributes its `dnd-extraction` fallback, and the maintained D&D
 prompts select that logical ID by default. PromptKit owns source precedence and
-profile parsing: an operator-provided matching profile takes precedence over a
+profile parsing and inheritance: an operator-provided matching profile takes precedence over a
 fallback profile without Notarius merging either document.
 When the registration is absent, a profile selecting `backend: local` fails
 inspection instead of falling back to a built-in or endpoint-only target.

docs/operations.md

@@ -89,6 +89,9 @@ provider call or credentials:
 notarius config validate --config /etc/notarius/config.yml --pipeline dnd-session
 ~~~
 
+An unset optional `api_key_env` reaches the provider without authorization and
+may receive a 401 or 403 response.
+
 Profile paths are currently resolved from the process working directory, not
 from the configuration file. The complete example's
 `./examples/profiles/dnd-extraction.yml` path is valid for a repository-root

docs/roadmap/implementation.md

@@ -195,7 +195,7 @@ not reproduce PromptKit's internal path, JSON-depth, or response-size matrices.
   boundary.
 - Ordinary and race-enabled tests pass.
 
-## Stage 3: Adopt Profile Inheritance, Rakestrawhome, And Optional Credentials
+## Stage 3: Adopt Profile Inheritance, Rakestrawhome, And Optional Credentials ✅
 
 ### Goal