Feature Request: Online Event Mode — QR code entry, live participant pool, and animated draw

[Spaccesi]

Summary

For conferences or fairs (e.g., Flutter Conf), the host should be able to create a raffle room. Attendees scan a QR code, enter their name, and join a live participant pool. The host can close registration and run an animated draw in front of the audience.

Sub-features

• Host creates a room and gets a shareable QR code.
• Attendees scan QR, type their name, and join the pool in real time.
• Host closes the pool and initiates the raffle with a significant animation.
• Participant search/filter — with 100+ participants, a search bar is needed to find and remove specific entries.
• Post-event app rating prompt — after using the app, prompt users to rate it on the App Store / Google Play (iOS and Android only).

Possible Solution

• Use a real-time backend (Firebase Firestore or similar) for the live pool.
• Generate QR code linking to a lightweight web registration page.
• Implement a search/filter input on the participants list.
• Use in_app_review Flutter package for the rating prompt.

Acceptance Criteria

• Host can create a room and share a QR code.
• Attendees can join via QR → web form (no app required for attendees).
• Participant list updates in real time for the host.
• Host can close registration and run the raffle with a live animation.
• Participants list has a search/filter bar (active when list > 10 entries).
• App rating prompt appears after a completed raffle on Android and iOS only.