Atheria: Live Wallpaper Engine

Thanks for testing Atheria! This build is our App Store release candidate. Please poke at these areas and report anything that feels off: 1) UPGRADE TO PRO (highest priority) Open the menu-bar Sparkle icon→ Preferences/Editor, then trigger the paywall (e.g. open the Video Editor or Smart Triggers, or tap Upgrade to Pro). Confirm the purchase sheet appears WITH a working confirm/Buy button, and that the sandbox purchase completes and unlocks Pro features. Tell us your macOS version if the confirm button doesn't show. 2) FIRST LAUNCH On a fresh install, the welcome/onboarding window should open on its own and lead you through setup. After you finish, quitting and relaunching should go straight to the menu bar with no window popping up. 3) WALLPAPERS Set a video wallpaper and a shader wallpaper. Check looping is seamless, and that playback pauses when you fully cover the desktop with a window (watch battery use). Multi-display users: try applying per-screen wallpapers. 4) PRIVACY GUARD Press the global hotkey (Cmd+Option+/) from any app to veil the screen, and set an idle timer. Confirm it triggers reliably and dismisses cleanly. 5) STAGE MANAGER With Stage Manager on, open Preferences/Editor and confirm the window joins the current stage and swaps correctly. Closing it should return Atheria to menu-bar-only. 6) SHADER CANVAS Write or tweak a shader and confirm it compiles live and applies without errors. Please include your Mac model and macOS version with any report. Thanks!