acbb2d8254
Owner-review follow-up on the Stage 8 branch: - Friend code is copyable (📋 + toast). The lobby notification badge is fixed — it had inherited the hamburger-bar style — into a proper round count dot. - Safari: min-width:0 on flex text inputs (friend code, profile, chat) so they shrink instead of pushing the adjacent button off-screen. - Profile editing is validated on both the UI and the backend: display-name format (letters joined by single space/./_ separators, no leading/trailing/adjacent separators, <=32 runes), a UTC-offset timezone picker (account.ResolveZone parses ±HH:MM or a legacy IANA name), a 10-minute away grid capped at 12h (wrap-aware), and email format; Save is disabled and invalid fields red-bordered until valid. Language stays in Settings. - In a game, an "add to friends" menu item flips to a disabled "request sent"; chat send/nudge became ⬆️/🛎️ icon buttons. - A finished game drops its last-word highlight, hides Check word / Drop game, disables zoom, and draws an inert (greyed) footer instead of hiding it. Tests: account validators (name/away/zone), UI profileValidation, e2e for the finished-game footer/menu and the copy control. Docs (PLAN, ARCHITECTURE, FUNCTIONAL +ru, UI_DESIGN) updated for the display-name rule, UTC-offset timezone and the 12h away window.