Flutter ZEGOCLOUD Call UI

I need the incoming-call screen for the astrologer side of my Flutter app (ZEGOCLOUD SDK) to appear full-screen—no status bar, no navigation bar—immediately when a call arrives and to remain visible until the astrologer taps either Accept or Reject. The behaviour must be consistent on both Android and iOS builds and must not interfere with any other overlays that the SDK already creates.

Once the job is done I expect:
• Updated Flutter/Dart code (or a clearly separated widget) that I can drop into the existing project.
• Instructions on any extra permissions, intent filters, or Info.plist changes you add.
• A brief note on devices/OS versions you used for testing so I can reproduce the result.

Please reply with:
• Your estimated turnaround time.
• Your fee for the task.
• Anything you still need from me (current repo access, design assets, build flavours, etc.).

I’ll approve the work as soon as the screen functions exactly as described and the integration steps are clear.