fix(adapter): close final foundation review

harness/tests/test_config_resources.py

@@ -69,3 +69,23 @@ vectors:
     assert cfg.database.transport == "direct"
     assert isinstance(cfg.vectors, PgvectorDirectConfig)
     assert cfg.vector_db.db_schema == "vectors"
+
+
+def test_loads_writer_only_http_vector_resource(tmp_path):
+    workspace = tmp_path / "workspace.yaml"
+    workspace.write_text(
+        """
+dwh:
+  type: thoth_rest
+  database: {database: analytics, schema: mart}
+  endpoint: {base_url: https://dwh.test/, api_key: reader}
+vectors:
+  type: thoth_vector_http
+  writer: {base_url: https://vectors.test/, api_key: writer}
+embeddings: {base_url: http://ollama:11434, dim: 768}
+"""
+    )
+
+    cfg = load_config(workspace)
+    assert cfg.vectors.reader is None
+    assert cfg.vectors.writer.api_key == "writer"