Add fut_store.py: a JSON-backed profile store (coins, owned club items,
saved squads, record). First run grants a starter pack -- 15000 coins +
a 10-player starter club (real assetIds; identity resolves locally
in-game per docs/CARD_SYSTEM.md).
Wire utas_server to the store: /user/credits -> persisted coins,
/club -> persisted owned items, PUT /squad -> persists the squad the
user builds so it survives relaunches. Profile save file is gitignored.
Foundation for pack-opening (store/purchasegroup + transaction) next.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PN5bmpDVQR1aXgefyWAt7o
funman300