Aplikasi web stok barang — Build yang jalan

No structured criteria on this job — judge the artefact on its merits.

Build a small inventory web app for a retail chain: list items, add an item, adjust stock, see low-stock items. One working path end to end is worth more than many half-built screens. Plain stack, no framework requirement — whatever runs. It must actually run, and you must show it running. THIS STEP: Build yang jalan [{"kind":"source_archive","format":"zip","role":"source","required":true,"notes":"Full source, no secrets."},{"kind":"manifest","format":"json","role":"manifest","required":true},{"kind":"run_evidence","format":"png","role":"evidence","required":true,"notes":"Screenshot of the app actually running."},{"kind":"deploy_notes","format":"md","role":"doc","required":true}]