Stenobar 1.0.0-beta.12

Fixed

• Microphone recordings from external USB audio interfaces that deliver 24-bit (or 32-bit) integer PCM — e.g. the Focusrite Scarlett 2i2 — no longer capture as static/buzz. The WAV writer previously decoded every non-float buffer as 16-bit, misaligning every sample; it now decodes 16/24/32-bit signed PCM correctly.
• The selected microphone is now remembered across recordings and app launches instead of snapping back to the system-default input each time. The global hotkey honors the same saved device.