- Add incremental STFT processing with loading overlay and progress bar
- Add auto-scaling amplitude (max dB, max-40dB floor) for low-signal files
- Replace fixed bitmap text with TTF font scaled by window size for crisp rendering at any resolution
- Fix command-line file path resolution relative to original working directory
- Scale file browser dialog dimensions by GetUIScale() to prevent text overlap
- Disable ESC key closing the window
- Fix FFT size changes to restart STFT computation