feat!: le paquet crée un index et lui ajoute une référence, rien de plus

src/vocabulary.ts

@@ -1,5 +1,6 @@
 /**
- * The IRIs this layer writes into an index document.
+ * The IRIs an index document is written with — published because a reader needs
+ * them to make sense of one.
  *
  * `urn:ng-eventually:` is RESERVED by the polyfill — triples whose subject falls
  * under it are dropped on read. This layer stays out of it entirely and uses its
@@ -9,9 +10,15 @@
 
 /**
  * On the index document's own subject: the predicate an indexed object must
- * carry, declared once by whoever creates the index.
+ * carry, declared once by whoever creates the index. `create` writes it.
  */
 export const INDEX_FIELD = "urn:ng-helpers:index:field";
 
-/** On an entry (subject = the indexed object's NURI): the value of that field. */
+/**
+ * On an entry (subject = the indexed object's NURI): the value of that field.
+ *
+ * This package never writes one — an entry is made by the layer that processes the
+ * index's inbox. It is published because reading an index means recognising this
+ * predicate on the subjects that come back.
+ */
 export const ENTRY_VALUE = "urn:ng-helpers:index:value";