Fix 404 page

[phlax]

which was broken in #332

[phlax]

cc @kyessenov

[yaswanthkumarch]

I’ll work on this issue. The 404 page should clearly show a “404 – Page Not Found” message, follow the existing Envoy website layout (header/footer/styles), return the correct 404 HTTP status, and provide a clear way to navigate back (e.g., Home or Docs). I’ll investigate the regression from #332 and submit a fix PR.

[phlax]

great, thanks - happy to review

[yaswanthkumarch]

I’ve reviewed the previous regression from site: Switch jekyll -> pelican #332.
The 404 page is being updated to:

Clearly display “404 – Page Not Found”.

Follow the existing Envoy website layout (header, footer, and styles).

Return the correct 404 HTTP status.

Provide clear navigation links back to Home and Docs.

I’m in the process of implementing these changes and will submit a PR soon for review.
Thank you for your patience!