Flutter QR Attendance App

I want a Flutter-based Android application that lets employees check in and out by scanning a QR code while giving me, as the admin, full oversight of everyone’s attendance records.

Core flow
• Users sign up and log in with their email and password.
• Once inside, a regular user simply taps “Scan” to register attendance; a unique QR code is read and the event (date and time) is stored instantly.
• Admins land on a separate dashboard view where they can monitor daily activity in real-time, browse historical logs, filter by date, and export the results to Excel. Only the date-time stamp needs to appear in the exported sheet.

Key requirements
– Two access levels: admin and standard user.
– QR-based attendance capture.
– Persistent history visible to both roles (with broader filters and export for admins).
– Excel-ready report generation.
– Built with Flutter for Android; clean, well-commented source code so I can extend it later.

Deliverables
1. Complete Flutter source code.
2. Release-ready APK.

Target timeline is 2–4 weeks; I’m available for quick feedback cycles so we can keep momentum.