Native Android app that decodes Czech SPAYD (Short Payment Descriptor) payment QR codes. Works fully offline; no data leaves the device. Features: * Scan QR codes with the camera * Share images or text into the app via the system Share Sheet (gallery, screenshots, browser) * Pick an image from storage * Open <tt>spayd:</tt> URIs * Parser derives the Czech account number from the IBAN * One-tap copy for every field * Material 3 with dynamic colors (Android 12+) and dark mode Built on CameraX and zxing-cpp for QR decoding — no proprietary Google dependencies.