The served main page broke its own CSS and images when the entry point
was a nested page. kage saves each page's asset links as mirror-relative
paths (../_kage/...) computed for that page's own location, but the
handler served the main page's bytes directly at /, so the browser
resolved those relative URLs against / and 404ed every one of them. A
developer.apple.com/documentation mirror landed at / with no styles.
Redirect / to the main page's canonical content path, the way the
archive's W/mainPage redirect already does, so the browser navigates to
the page's real URL and resolves its relative assets correctly. Kiwix
was unaffected because it follows that redirect itself.
Duc-Tam Nguyen
9eabd93098