* feat: full theme revamp * feat: dark-only theme, aligned topics/title rule, nav search polish - Drop the theme switcher (header + mobile menu footer) and pin dark - Keep the topics separator and page-title divider on one pixel row at all sidebar widths, compacting both sides (measured, wrap-aware) - Reset heading baseline one notch smaller; full scale on desktop only - Clamp the nav search so its right bar lands on the content/TOC boundary * feat: invert content link colors, cyan twoslash tags - Plain links: white at rest, topic accent on hover - Links wrapping code chips: accent at rest (underline matches the chip), white on hover, chip follows - Twoslash hovercard JSDoc tags (@example etc.) use cyan