Implementa o MVP do Adaptador de Planilhas no Elo Pro.

O módulo usa a identidade Supabase, isola cada workspace e registra storage, TTL, runner e biblioteca XLSX como decisões ainda abertas.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/infra/storage/index.ts

@@ -0,0 +1,15 @@
+import path from "node:path";
+import { LocalPrivateStorage } from "./local";
+import { createSupabaseStorage } from "./supabase";
+import type { ObjectStorage } from "./memory";
+
+export function createStorage(): ObjectStorage {
+  const url = process.env.NEXT_PUBLIC_SUPABASE_URL;
+  const serviceKey = process.env.SUPABASE_SERVICE_ROLE_KEY;
+  const bucket = process.env.SUPABASE_STORAGE_BUCKET;
+  if (url && serviceKey && bucket) return createSupabaseStorage(url, serviceKey, bucket);
+  if (process.env.NODE_ENV === "production") {
+    throw new Error("Armazenamento privado não configurado. A decisão de object storage continua aberta.");
+  }
+  return new LocalPrivateStorage(path.join(process.cwd(), ".data", "storage"));
+}