Build a mobile-first youth sports team management app with these features: 1. Team creation with seasons, divisions, and rosters: coaches, assistant coaches, players (first name, jersey number, positions, guardian contacts). 2. Season schedule builder for games and practices with opponent, location, and arrival versus start times, syncable to phone calendars and Google Calendar. 3. RSVP per event per family with attendance rollup the coach sees before game day, plus no-show streak alerts. 4. Group chat per team with AI translation so multilingual families get messages in their own language, plus pinned messages for field changes. 5. Signup sheets for snack duty, carpool offers (driver, seats, pickup point), and volunteer roles like scorekeeping. 6. An AI assistant that writes a weekly recap from the schedule and attendance (score, who showed up, next event reminder), drafts rainout announcements from a coach voice note, and answers parent questions like what time is practice from the schedule data. 7. Availability grid where families mark vacation blackouts and the AI warns the coach when a game falls during a known absence cluster. 8. Push and email reminders: 24 hours before events, morning-of, and arrival-time nudges. 9. Photo album per season with automatic player tagging. 10. Free tier for one team, paid tier for clubs with multiple teams and league-wide standings.