Verify suite configuration overrides and document migration

README.md

@@ -145,6 +145,28 @@ Replace `dnd_pipeline_narratio_notarius_llm_api_key` with
 `dnd_pipeline_narratio_audita_credentials` for Audita's backend credential
 names. The old diagnostics retention variable is no longer forwarded.
 
+The old per-purpose Audita endpoint and API-key names now belong to the
+backend map; both default profiles share the `dnd` backend and its one
+concurrency limit. Old proposal and validation models and per-attempt timeouts
+belong in complete profile mappings. The default 900-second value is retained
+per attempt; `dnd_pipeline_audita_llm_operation_timeout` is an independent
+whole-operation deadline and defaults to `null`, leaving Audita's native
+policy in charge. The former `*_max_retries` variables do not have a direct
+one-to-one replacement: use the optional Audita transient retry and repair
+attempt settings according to the desired native behavior. Optional retry
+pass-throughs for Notarius PromptKit and Scriptorium likewise default to
+`null`; an explicit `0` is forwarded, not treated as omission.
+
+Inventory must supply each named backend credential through
+`dnd_pipeline_secrets` and include its name in
+`dnd_pipeline_narratio_audita_credentials`. Narratio forwards only names in
+that list and does not discover them from Audita's configuration. The
+Notarius list is independent. For profile overrides, use filename-safe map
+keys equal to each profile's native `id`; the suite writes each map value
+unchanged and does not merge individual fields. See [Audita's v2 manifest
+migration](https://gitea.maximumdirect.net/eric/audita/src/tag/v2.0.0/docs/migrations/v2.md)
+for application-owned manifests; this role does not convert them.
+
 | Variable | Default |
 | --- | --- |
 | `dnd_pipeline_narratio_seriatim_output_schema` | `seriatim-intermediate` |
@@ -260,6 +282,13 @@ dnd_pipeline_narratio_testing_scriptorium_profile: endpoint-profile
 dnd_pipeline_notarius_testing_llm_profile: alternate-economy-profile
 ```
 
+Narratio selects it with `--overlay testing`, and direct Notarius commands
+use `--config-overlay testing`; the former `--profile` and
+`--config-profile` selectors are retired. Previously deployed
+`profiles/testing.yml` files are ignored, not pruned. Renaming the selected
+overlay normally changes configuration identity, so cached work tied to the
+old named selection may not be reused.
+
 ### Notarius extraction policy
 
 The Notarius root configuration imports the fixed