Add buffer management for raw USB reads

[malikalhack]

Ring/queue buffer to decouple USB reads from processing consumer

[malikalhack]

1. The release build succeeded.
2. After clicking Connect, the status updates to Stopped | Live mode | Connected, with the device indicator blinking red.
3. Pressing Start changes the button to Stop, with the status Acquiring and the device indicator blinking green.
4. Data collection lasted for 60 seconds.
5. When pressing Stop, the interface remains responsive, the status returns to Stopped, and the connection stays active. The device indicator resumes blinking red.
6. The Start-to-Stop cycle was repeated 11 times, keeping the GUI responsive. After stopping, the USB connection remained usable for a new start.
7. When restarting data collection with the Start button while the device was physically disconnected, the app did not freeze, and acquisition stopped. The message Device disconnected: USB device lost while beginning command appeared.
8. Reconnecting the device was automatic.
9. Clicking Connect again updates the status to Stopped | Live mode | Connected, with the device indicator flashing red.
10. Pressing Start switches to Stop, with Acquiring status and the device indicator flashing green.
11. The app was closed during data collection; the process finished without freezing or crashing. The indicator first flashed red, then stopped.
12. No issues were observed:

• No persistent Recovering USB connection;
• No Acquisition stopped: ... message during normal operation;
• No crashes, deadlocks, or infinite waits;
• FIFO test passed;
• Release build completed without warnings.