{
    "1": {
        "inputs": {
            "width": 256,
            "height": 256,
            "batch_size": 1,
            "color": 16711680
        },
        "class_type": "EmptyImage",
        "_meta": {
            "title": "RGB image (3 channels, red)"
        }
    },
    "2": {
        "inputs": {
            "width": 256,
            "height": 256,
            "batch_size": 1,
            "color": 255
        },
        "class_type": "EmptyImage",
        "_meta": {
            "title": "Base image for RGBA (blue)"
        }
    },
    "3": {
        "inputs": {
            "value": 0.5,
            "width": 256,
            "height": 256
        },
        "class_type": "SolidMask",
        "_meta": {
            "title": "Alpha mask (0.5)"
        }
    },
    "4": {
        "inputs": {
            "image": ["2", 0],
            "alpha": ["3", 0]
        },
        "class_type": "JoinImageWithAlpha",
        "_meta": {
            "title": "RGBA image (4 channels)"
        }
    },
    "5": {
        "inputs": {
            "image1": ["1", 0],
            "image2": ["4", 0],
            "blend_factor": 0.5,
            "blend_mode": "normal"
        },
        "class_type": "ImageBlend",
        "_meta": {
            "title": "Blend RGB (3ch) + RGBA (4ch) - exercises CORE-103 fix"
        }
    },
    "6": {
        "inputs": {
            "filename_prefix": "image_blend_channel_test",
            "images": ["5", 0]
        },
        "class_type": "SaveImage",
        "_meta": {
            "title": "Save blended output (will be RGBA)"
        }
    }
}