Prepare canonical party and derived players inputs

docs/integrations/notarius.md

@@ -41,6 +41,12 @@ selector, as direct argument-vector entries without shell interpretation. A CLI
 binding takes precedence over a matching external path in Notarius
 configuration. Narratio never emits `--without-reference`.
 
+For canonical party configuration, the `party` binding is the unchanged,
+validated authored roster and the `players` binding is its generated
+projection. Both retain their established `narratio.input.party` and
+`narratio.input.players` source IDs, and both are resolved from the prepared
+manifest rather than from campaign configuration at extraction time.
+
 The maintained D&D boundary binds only the four campaign-owned external slots:
 
 ```text