* Fix VipsDriver save() without path and format() being ignored
The VipsDriver was missing originalPath tracking and format fallback
logic that GdDriver and ImagickDriver both have. This caused save()
without a path to fail with "Unsupported format 'unknown'" and
format() calls to be ignored when determining the output format.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* Avoid else in VipsDriver save()
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>