Speed up the homepage without breaking design.

Speed up the homepage of mrsolarpv.co.uk without breaking design, forms, or tracking.

Main issues already identified:

* Render-blocking CSS from Hummingbird CDN
* Too many CSS/JS files loading on homepage
* Duplicate tracking scripts and containers
* Heavy third-party scripts including Google tags, Facebook Pixel, Trustpilot/Trustindex
* Likely unnecessary WooCommerce/theme/plugin assets loading sitewide

Tasks required:

1. Audit and remove duplicate GTM/GA4/Google Ads/Facebook Pixel installs
2. Optimise Hummingbird settings for CSS/JS without breaking layout
3. Reduce render-blocking CSS and improve LCP on homepage
4. Delay/defer non-critical third-party scripts
5. Unload unnecessary plugin assets from homepage
6. Review theme/plugin stack for anything not needed
7. Keep forms, tracking, and conversions working
8. Provide before/after PageSpeed results and list of changes made

Important:

* Take a backup before changes
* Work on staging first if possible
* Do not just install more optimisation plugins
* Do not remove tracking without confirming conversions still work