* docs: convert Copy page button to dropdown menu with Open markdown and Edit page options
* docs: fix button border highlight and add page footer with actions
- Fix split-button hover: highlight entire button group (both main button and chevron) when hovering any part of the group, using .page-actions:hover parent selector
- Add PageFooter component with horizontal layout showing Copy page, Open markdown, and Edit page actions at the bottom of every docs page
- Footer uses same API endpoints (raw-markdown, resolve-path) and GitHub URL construction as the dropdown button
* fix: remove flex class from article-content to fix PageFooter layout
The article-content div had Tailwind's 'flex' class which set display:flex
with default row direction. The 'column' class was not a valid Tailwind
utility (should be 'flex-col'), so the PageFooter rendered to the right
of page content instead of below it. Removing 'flex column' restores
block layout so children stack vertically.
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Co-authored-by: kiloconnect[bot] <240665456+kiloconnect[bot]@users.noreply.github.com>
kilo-code-bot[bot]
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