Backlog whitebikes inspired

Migrovane z docs-old-cvrn/plans/BACKLOG_WHITEBIKES_INSPIRED.md.

Tento backlog preklada inspiraciu z OpenSourceBikeShare do CVRN kontextu (Next.js + Supabase RPC + RLS).

Must

1. Admin mutacie cez centralizovane RPC + audit trail
   • Stav: implementovane (schema + patch + /admin audit tabulka).
   • Doplnenie: implementovana historia starych kodov + PUK-gated reveal modal.
2. Stavovy guard model pre bike flow (jedna pravda pre transitions).
3. Reported bike flow end-to-end (reported status + report lifecycle).

Should

1. Operacne admin akcie "force return" a "override rent" s auditom.
2. Terms gate pri prvom pouziti po release pravidiel.
3. Historizacia kodu zamku a recovery flow pri strate kodu.

Could

1. Reward/pokuta pravidla (napr. bonus za dlhsie odlozeny bike na potrebnom mieste).
2. Notifikacny modul (e-mail/SMS) nad eventami rent/return/report.
3. Lokalizacny modul pre viac jazykov nad UI + notifikaciami.