The site is built with PHP 7.x and the Smarty templating engine, and it has been live for some time. Right now the priority is to stabilise and extend the backend. I already have a basic wireframe that maps upcoming features, so the work centres on the underlying logic rather than fresh UI design. Here is what I need from you: • Audit the current codebase, identify bottlenecks or fragile sections, and document findings. • Implement fixes or refactors that improve reliability and performance while preserving existing behaviour. • Commit all changes to the Git repository with clear, self-contained messages and a short changelog. • Verify that each update runs error-free in staging before it is merged to production. Acceptance criteria: the application loads without PHP notices or warnings, all affected modules pass their current unit tests, and page response times remain equal to or faster than present benchmarks. Experience with Smarty, vanilla PHP (no heavy frameworks), and MySQL optimisation will allow you to move quickly. A brief note on similar maintenance projects or code samples that showcase clean, well-commented work will help me assess fit.