US-2a.1implemented Rotate a receipt image
As a user who photographed a receipt at the wrong angle I want rotate the image 90/180/270 degrees using an interactive OpenCV window so that the text is readable for labelling and AI inference.
Acceptance Criteria
- Pressing `r` rotates 90 degrees clockwise; `l` rotates counter-clockwise.
- Pressing `Backspace` undoes the last rotation.
- Pressing `Enter` saves the rotated image and a metadata JSON with the rotation angle.
- Pressing `q` skips the image without saving.
No DAG diagram: UI-only operation — rotates an image in-place; no data flows between DAG layers.
Demo video coming soon