Document workload-oriented LLM profile deployment

docs/config.md

@@ -32,7 +32,8 @@ override the fields listed below.
   single-lane Seriatim-to-spell pipeline.
 - [Complete D&D configuration](../examples/dnd-complete.config.yml) uses
   ordered steps, all implemented D&D lanes, generated references, state
-  settings, and bounded LLM concurrency.
+  settings, bounded LLM concurrency, and the maintained
+  [operator profile](../examples/profiles/dnd-extraction.yml).
 
 Use these complete files as starting points rather than combining the
 illustrative fragments in this reference.
@@ -93,10 +94,22 @@ promptkit:
 | **local_backend.endpoint** | string | Required when **local_backend** is present; absolute HTTP or HTTPS URL with a host. |
 | **local_backend.concurrency_limit** | integer | Optional non-negative limit; defaults to 0. |
 
-Set at most one of **profile_dir** and **profile_file**. Profile IDs used by a
-binding must be available from the selected PromptKit profile source when the
-pipeline is resolved. The optional local registration may coexist with either
-profile source or with PromptKit's built-in profiles.
+Set at most one of **profile_dir** and **profile_file**. Relative values use
+the process working directory, not the configuration file's directory. The
+complete example's `./examples/profiles/dnd-extraction.yml` value is therefore
+valid when Notarius is launched from the repository root; use an absolute path
+for services and containers.
+
+An operator source is optional. For a requested ID, PromptKit checks the
+configured operator source first, then Notarius's embedded fallback profiles,
+then its own built-in catalog. A matching profile is complete: it replaces a
+lower-precedence definition rather than merging with it. The maintained
+[`dnd-extraction` operator profile](../examples/profiles/dnd-extraction.yml)
+is a secret-free deployment artifact; production, development, and local
+deployments can each provide a complete definition with that same workload ID.
+Use workload-oriented IDs for new profiles instead of model names.
+[Operations](operations.md#promptkit-profile-deployment) owns the deployment
+workflow and credential-handling guidance.
 
 When **local_backend** is present, its endpoint is trimmed and must use HTTP or
 HTTPS case-insensitively, be absolute, and have a non-empty host. URL paths are
@@ -119,11 +132,17 @@ 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/v0.3.0/docs/formats.md).
+[pinned profile-file format](https://gitea.maximumdirect.net/eric/promptkit/src/tag/v0.5.0/docs/formats.md).
 The [PromptKit upstream boundary](integrations/pkg-promptkit.md) identifies the
 supported package API, and [Operations](operations.md#operational-limits)
 describes the effective concurrency layers.
 
+`notarius config validate --pipeline <id>` resolves the selected pipeline and
+inspects every explicit effective profile without contacting a provider or
+requiring credential values. It rejects absent, malformed, or incompatible
+profiles before a run prepares modules. Credential availability is checked only
+when a generation is prepared.
+
 ## Migrating Version 3 Configuration
 
 Version 3 files are not decoded or rewritten. Change **version: 3** to
@@ -185,6 +204,7 @@ Each **pipelines** entry has a unique, non-empty ID and the following shape:
 ~~~yaml
 pipelines:
   dnd-session:
+    llm_profile: dnd-extraction
     input: seriatim
     chunk: generic
     output: json
@@ -197,7 +217,7 @@ pipelines:
 
 | Field | Type | Default | Rules |
 | --- | --- | --- | --- |
-| **llm_profile** | string | none | Optional non-empty default PromptKit profile ID for selected LLM-backed bindings and validators. |
+| **llm_profile** | string | none | Optional non-empty default PromptKit profile ID for selected LLM-backed bindings and validators. An explicitly present blank value is invalid. |
 | **input** | module binding | none | Required. |
 | **chunk** | module binding | **generic** | Optional. |
 | **output** | module binding | **json** | Optional. |
@@ -211,7 +231,8 @@ needs a unique non-empty **id**, an **artifacts** map, and may have
 **references**. A lane ID must not appear more than once in a pipeline,
 including across explicit steps.
 
-For each selected LLM-backed binding or validator, profile selection uses the
+For each selected LLM-backed binding or validator, profile selection occurs
+after module, validator, and `--only` lane selection. It uses the
 run-level **--llm-profile** value first, then the binding's **llm_profile**,
 then the pipeline's **llm_profile**, and finally the PromptKit default.
 Deterministic bindings do not receive these defaults or run overrides.
@@ -243,7 +264,7 @@ Use an object for fields:
 ~~~yaml
 extract:
   module: dnd/spells
-  llm_profile: gemini-2-flash
+  llm_profile: dnd-extraction
   retries: 2
   references:
     spell_catalog: ./dnd-spell-catalog.json