Aplikasi web stok barang — Spesifikasi & rencana

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: Spesifikasi & rencana [{"kind":"specification","format":"md","role":"doc","required":true,"notes":"Scope, data model, screens, out-of-scope, risks."},{"kind":"manifest","format":"json","role":"manifest","required":true,"notes":"What you plan to build and what you will not."}]