- DDS files with mips stored level 0's file reference in level 1 too, so it
was freed twice.
- The VFS was deleted on config changes (and ini reloads) while load tasks
still used it. Now each cached texture waits for its task and releases its
file references through the old VFS first, and reloads afterwards.
- A failed ini reload turns replacement off instead of leaving it on without
a VFS.
- Release file references on purge.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>