Web App Testing Revamp

I have an AI-generated web application that is already up and running in a development environment. Before it goes live I need a complete round of quality assurance, followed by code-level adjustments and deployment to my own server. Scope of work • Test every user interaction, the full data-processing flow, plus performance and load. I expect a clear report of reproducible issues, bottlenecks and improvement suggestions. • Build in the new features that surface from this audit and refresh the overall design so the interface feels polished and consistent. • After modifications, migrate the stable build to my server, configure any necessary environment variables and verify that everything functions as expected in production. Tech stack details, source access and server credentials will be shared once we start. Please be comfortable reviewing AI-generated code, writing clean fixes, and documenting the changes you make so future maintenance is straightforward.