refactor(memory): consolidate embeddings and batch helpers

src/memory/embeddings-remote-fetch.ts

@@ -0,0 +1,21 @@
+export async function fetchRemoteEmbeddingVectors(params: {
+  url: string;
+  headers: Record<string, string>;
+  body: unknown;
+  errorPrefix: string;
+}): Promise<number[][]> {
+  const res = await fetch(params.url, {
+    method: "POST",
+    headers: params.headers,
+    body: JSON.stringify(params.body),
+  });
+  if (!res.ok) {
+    const text = await res.text();
+    throw new Error(`${params.errorPrefix}: ${res.status} ${text}`);
+  }
+  const payload = (await res.json()) as {
+    data?: Array<{ embedding?: number[] }>;
+  };
+  const data = payload.data ?? [];
+  return data.map((entry) => entry.embedding ?? []);
+}