Executor now applies rotation, flip, resize, watermark, format
conversion, compression, renaming, and metadata handling. Previously
only resize, convert, and compress were active.
- Rotation: CW90/180/270 via image crate methods
- Flip: horizontal/vertical via image crate methods
- Watermark: text (imageproc + ab_glyph) and image overlay with
alpha blending, positioned via WatermarkPosition enum
- Rename: apply_simple or template-based renaming with counter
- Metadata: re-encoding strips EXIF; KeepAll copies back via little_exif
lashman
8212969e9d