Resolve README merge conflict and add issue #26 heading

Author: fuzziecoder

backend/README.md

@@ -12,6 +12,8 @@ Server starts at `http://localhost:4000` by default.
 
 ## Database
 
+### Issue #26: Move from in-memory store to persistent DB
+
 - Uses `node:sqlite` with a local database file at `backend/data/brocode.sqlite`.
 - You can override the location with `BROCODE_DB_PATH=/custom/path.sqlite npm run backend`.
 - On first start, seed data is inserted for users, spots, catalog items, and a sample order.