feat!: useShapeQuery lit par la requete de forme du SDK

packages/polyfill/README.md

@@ -32,7 +32,7 @@ import {
   configure,
 } from "@ng-eventually/polyfill";
 
-configure({ ng: realNg, useShape: realUseShape, getSession, sharedWallet });
+configure({ ng: realNg, useShape: realUseShape, ormSubscription, initNg, sharedWallet });
 await ensureIdentity();              // who I am (returned), connection work awaited
 // A store is named by its reference — `doc_create` takes one, and the session is where
 // upstream gets it. Omit it and the document goes to the private store, as upstream does.
@@ -41,6 +41,9 @@ await docs.sparqlUpdate(sid, `INSERT DATA { … }`, doc);
 // Reading is by SHAPE, over the SDK's own scope. `did:ng:i` is the whole local dataset;
 // naming documents in `graphs` reads exactly those. There is no "list my documents" call
 // and no way to scope a read by store — neither exists upstream.
+// It reads through the SDK's own shape query (`RdfOrmSubscription.getOrCreate`, passed to
+// `configure` as `ormSubscription`), and hands back the shape's own objects: `@graph`,
+// `@id` and one field per predicate the shape DECLARES.
 const query = useShapeQuery(NoteShape, { graphs: "did:ng:i" });
 ```