1.0.0

Initial release.

• Solar elevation-based color temperature with continuous interpolation across 5 twilight phases
• Auto-detects location from KDE settings
• Drives KDE Night Color natively via kwriteconfig6 — no popups, smooth transitions
• Saves and restores original Night Color settings on start/stop
• Override support via circadia preview <kelvin>
• Arch Linux PKGBUILD included