0.23.0 — Theme Switcher & Auto Update

Added: Animated Theme Switcher — added a shadcn-style three-option theme switcher under src/components/ui/theme-switcher-1.tsx with system, light, and dark choices, lucide icons, and Motion layout animation.
Changed: Theme Mode UX — replaced the Appearance settings theme dropdown and the old header two-state toggle with the new animated switcher. The component keeps Kandown's existing auto, light, and dark config values so existing .kandown/kandown.json files remain compatible.
Changed: Framework Integration — adapted the provided next-themes component to Kandown's Vite/Zustand theme pipeline instead of adding a Next.js-only provider. Theme changes continue to persist through the existing project config and apply via the local CSS token engine.
Fixed: Auto-Updater Retry Blocking — failed auto-update installs are no longer cached as a successful update check. Previously, if npm answered the registry but the install failed, Kandown could suppress retries for 24 hours, making auto-update feel blocked across open projects.
Fixed: Multi-Project Auto-Update Refresh — after a successful in-place global update, Kandown now scans active local daemons and refreshes kandown.html for every open project, so two simultaneously open boards do not remain stuck on different web UI bundles.
Fixed: Installed Version Verification — the auto-updater now verifies the installed Kandown CLI version instead of only checking the npm registry version, making successful restart decisions based on the actual local binary.