fix(core): preserve adapter command contracts

harness/tht/solved.py

@@ -43,25 +43,22 @@ def _solved_hash(record: VectorRecord) -> str:
     return content_hash(record.content + "\n" + str(record.metadata.get("sql", "")))
 
 
-def save_solved_question(record: VectorRecord, *, writer, embedder) -> int:
+def save_solved_question(record: VectorRecord, *, store, embedder) -> int:
     """Upsert one-row della coppia domanda->SQL via writer key (stesso pattern di
     save_one_memory, spec D11): hash dedup client-side, embedding solo se domanda
     o SQL sono cambiati. `writer` e' un VectorRestClient (writer key). Ritorna il
     numero di righe upsertate (0 = invariata)."""
-    from tht.vectorstore.rest_writer import pack_metadata
+    from tht.ports.vector import VectorWriteRecord
 
     new_hash = _solved_hash(record)
-    existing = writer.existing_hashes("memory", [SOLVED_KIND])
+    existing = store.existing_hashes("memory", [SOLVED_KIND])
     if existing.get(record.id) == new_hash:
         return 0
     embedding = embedder.embed_documents([record.content])[0]
-    return writer.upsert_records("memory", [{
-        "record_key": record.id,
-        "kind": record.kind,
-        "content_hash": new_hash,
-        "metadata": pack_metadata(record),
-        "embedding": embedding,
-    }])
+    return store.upsert(
+        "memory",
+        [VectorWriteRecord(record=record, embedding=embedding, content_hash=new_hash)],
+    )
 
 
 class SolvedIndexError(Exception):