Debug & Create Plan To Finish Base44 + Claude Shopify AI App (Implement is Stage II)

I need a practical senior AI/Shopify developer to debug and finish a partially built AI-powered Shopify app for CustomBoxes.io. The app uses Base44 and Claude. The ideal candidate will have experience in AI and Shopify app development, with a focus on debugging and completing existing projects. The $500 budget is for the initial technical audit and repair plan only. Follow-on implementation will be scoped separately after the audit. If the audit goes well, this could lead to follow-on implementation work and potentially an ongoing technical advisory / development relationship. This is not a build-from-scratch project. We already have working prototypes and need someone to inspect the current setup, identify what is broken, determine what is salvageable, and recommend the fastest path to a working MVP. The first milestone is a fixed-price technical audit covering architecture, Claude/API behavior, Shopify integration, Base44 limitations, front-end/back-end issues, and the highest-leverage fixes. If the audit is strong, we may continue into implementation as a separate milestone.