Flutter iOS Bug Fix & Publish

I want to move the latest version of my Flutter app from its GitHub repository straight to the Apple App Store, but a few stubborn bugs are keeping it from passing review. The task is focused purely on bug fixes—no new features or design work—so the existing functionality works flawlessly on current iOS versions.

Here’s what I need:

• Clone the project from GitHub, set it up locally, and track all changes in the same repo
• Identify and resolve every compile-time or run-time bug I can reproduce during testing
• Generate a clean, signed .ipa that sails through TestFlight and Apple’s automatic checks
• Submit the update through my App Store Connect account (I’ll grant access) or guide me step-by-step
• Push final commits back to GitHub with a concise changelog

Acceptance criteria
• The app runs without crashes or functional errors on iOS 15+
• Apple approves the update without stability-related rejection
• GitHub main branch contains the final, tested code

You’ll need solid experience with Flutter 3.x, Xcode, CocoaPods, and TestFlight. When you reply, mention a similar iOS release you have shepherded to the App Store and your expected turnaround time.