feat(web): restore payload CMS (cuidecar pattern + importMap)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/broker/src/qdrant.ts

@@ -0,0 +1,24 @@
+import { QdrantClient } from "@qdrant/js-client-rest";
+import { env } from "./env";
+
+export const qdrant = new QdrantClient({ url: env.QDRANT_URL });
+
+export function meshCollectionName(
+  meshId: string,
+  collection: string,
+): string {
+  return `mesh_${meshId}_${collection}`.toLowerCase().replace(/[^a-z0-9_]/g, "_");
+}
+
+export async function ensureCollection(
+  name: string,
+  vectorSize = 1536,
+): Promise<void> {
+  try {
+    await qdrant.getCollection(name);
+  } catch {
+    await qdrant.createCollection(name, {
+      vectors: { size: vectorSize, distance: "Cosine" },
+    });
+  }
+}