refactor: move memory engine behind plugin adapters

src/plugins/memory-host/embeddings-debug.ts

@@ -0,0 +1,13 @@
+import { isTruthyEnvValue } from "../../infra/env.js";
+import { createSubsystemLogger } from "../../logging/subsystem.js";
+
+const debugEmbeddings = isTruthyEnvValue(process.env.OPENCLAW_DEBUG_MEMORY_EMBEDDINGS);
+const log = createSubsystemLogger("memory/embeddings");
+
+export function debugEmbeddingsLog(message: string, meta?: Record<string, unknown>): void {
+  if (!debugEmbeddings) {
+    return;
+  }
+  const suffix = meta ? ` ${JSON.stringify(meta)}` : "";
+  log.raw(`${message}${suffix}`);
+}