feat: add core domain types for Photo Gallery SDK including media items, albums, and annotations

next.config.ts

@@ -1,8 +1,9 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
-  // The SDK ships ESM/TS; let Next transpile it.
-  transpilePackages: ["@abe-kap/appshell-sdk"],
+  // Both SDKs ship ESM/TS source (their package `exports` point at src/), so Next
+  // must transpile them rather than treat them as prebuilt CJS.
+  transpilePackages: ["@abe-kap/appshell-sdk", "@photo-gallery/sdk"],
   // The browser calls the Shell BFF same-origin under /shell (so the HttpOnly
   // session cookie flows). We deliberately use /shell (NOT /api) to avoid
   // clobbering the existing /api/geo route. Point BFF_ORIGIN at the deployed BFF.