0.21.7 — Web UI Vector Logo & CLI Changelog Fix

Added: Vector Brand Logo Component (LogoSvg.tsx) — unified header and empty state UI components to render the official multi-color brand vector logo from logo.svg.
Fixed: CLI Changelog Display on Update & First Run — fixed checkVersionSeenNotices() in bin/kandown.js so release changelogs render cleanly whenever a new version is detected or installed, ensuring version notices and changelogs are printed reliably in the terminal during updates.