add some (maybe) working storefronts

apps/econ/wrangler.jsonc

@@ -4,6 +4,13 @@
 	"main": "src/econ.app.ts",
 	"compatibility_date": "2025-09-20",
 	"compatibility_flags": ["nodejs_compat"],
+	// Storefront catalogs served dynamically by id: `/api/storefronts/v3/giftdropstore/:id`
+	// fetches `sf{id}.json` from this directory via the ASSETS binding. Drop a new
+	// `sfN.json` in `static/storefronts` to add a storefront — no code change needed.
+	"assets": {
+		"binding": "ASSETS",
+		"directory": "./static/storefronts"
+	},
 	// Shared `recflare` D1 (accounts table) — read/write the player's avatar column.
 	// The accounts schema/migrations are owned by the `auth` worker. The "local"
 	// placeholder is replaced with the real id from RECFLARE_D1 at deploy time.