- #558: a backend can be alive yet wedged (zero presented frames forever
on legacy stacks). Vendored femtovg counts presented frames; a watchdog
8s after window-ready re-arms the renderer sentinel and restarts, so
the existing ladder degrades wgpu -> alt adapter -> GL -> software on
its own instead of stranding the user on a blank window.
- #655: 'Add only new tracks' stays enabled with all-dupes (adds zero
and closes) instead of disappearing as the primary action.
km
vicrodh
d99419f22d