Fixed
- Default Audio Selection: Selects the first available audio track after probing each new source, while preserving restored sessions and explicit track choices. Resolves #151.
- Conversion Start Guidance: Replaces the unexplained disabled Start button with a specific reason for each blocked state and opens the output-folder chooser when that is the missing step. Resolves #161.
- Linux Window Title: Sets
Frameas the native window title so X11 desktops and window-management tools no longer display a blank application name. Resolves #168. - Preview Wheel Zoom: Uses the standard wheel direction, with upward scrolling zooming in and downward scrolling zooming out. Resolves #160.
- Settings Persistence Diagnostics: Reports the failing read or write operation and a home-directory-redacted path, and preserves the existing settings target when atomic replacement fails. Improves diagnostics for #150.