OpenCart PageSpeed Audit: baseline, assets and checkout verification

Self-initiated audit fixture / non-client PSI data. Created a demonstration diagnostic process for OpenCart for home, category, and product templates. The fixture separates baseline and optimized state, shows resource waterfall, LCP asset, image dimensions, deferred scripts, and cache policy. The audit kit includes URL matrix, resource inventory, and commerce regression checklist. The values in the fixture are illustrative: real figures can only be mentioned after repeated Lighthouse/PSI measurements of a specific allowed URL. Stack: OpenCart, PHP, Core Web Vitals, PageSpeed, Lighthouse.