fix(core): preserve adapter command contracts

harness/tht/memory.py

@@ -255,7 +255,7 @@ def memory_vector_record_for_decision(
 
 
 def save_one_memory(
-    records: list[MemoryRecord], decision_seq: int, *, writer, embedder
+    records: list[MemoryRecord], decision_seq: int, *, store, embedder
 ) -> int:
     """Targeted one-row upsert of a promoted decision to pgvector via the writer key
     (spec D11). This is NOT a full vectorstore resync: it embeds and pushes a single
@@ -267,27 +267,22 @@ def save_one_memory(
     the writer's existing_vector_hashes; the embedding (Ollama round-trip) and the
     upsert are skipped when the content is unchanged. Idempotent by construction.
 
-    `writer` is a VectorRestClient (writer key); `embedder` an embeddings client.
+    `store` is the configured writable VectorStore; `embedder` an embeddings client.
     The destructive cleanup (sync's delete-stale step) is intentionally absent: it
     remains a server-side-only operation via the direct vectordb connection.
     """
-    from tht.vectorstore.rest_writer import pack_metadata
+    from tht.ports.vector import VectorWriteRecord
     from tht.vectorstore.store import content_hash
 
     record = memory_vector_record_for_decision(records, decision_seq)
     if record is None:
         return 0
     new_hash = content_hash(record.content)
-    existing = writer.existing_hashes("memory", ["memory"])
+    existing = store.existing_hashes("memory", ["memory"])
     if existing.get(record.id) == new_hash:
         return 0  # unchanged: skip embedding + upsert
     embedding = embedder.embed_documents([record.content])[0]
-    row = {
-        "record_key": record.id,
-        "kind": record.kind,
-        "content_hash": new_hash,
-        "metadata": pack_metadata(record),
-        "embedding": embedding,
-    }
-    return writer.upsert_records("memory", [row])
-
+    return store.upsert(
+        "memory",
+        [VectorWriteRecord(record=record, embedding=embedding, content_hash=new_hash)],
+    )