Refactored header navigation into a Resources dropdown with Changelog, Community, Careers, Brand, and Legal pages.

Added

New Resources dropdown in the site header consolidating Blog, Changelog, Community, Careers, Brand, and Legal.
Changelog page (this one) backed by MDX — every future release gets its own entry.
Community page with channel cards, contributor marquee, and links to every social surface.
Brand page mirroring the bitrouter/brand-kit repo.
Legal index with dedicated Privacy and Terms pages.
Telegram and Reddit joined the social rotation (GitHub · Discord · Telegram · Reddit · X).

Changed

Privacy and Terms moved out of /docs/overview into a dedicated /legal namespace. Old URLs redirect.
Footer now appears site-wide with the full social cluster, theme toggle, and resource links.

This is the first entry in the changelog. Older release notes live in GitHub releases — we'll start publishing here from now on.