Fix image roi rgb image

[cappel89]

No description provided.

[Copilot]

Pull request overview

This PR updates the image ROI/crosshair behavior to correctly handle RGB (vector-valued) images by suppressing scalar intensity/profile generation and ensuring stale ROI profile curves are cleared when switching from scalar to RGB image data.

Changes:

• Prevent ROI profile slice computation for non-2D scalar images and clear any existing live/pinned ROI curves when an unsupported image arrives.
• Omit scalar intensity lines in live/pinned coordinate labels (including detached pin labels) when the underlying image is RGB.
• Add unit tests covering ROI curve clearing on RGB updates and label behavior for RGB images.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/unit_tests/test_image_view_next_gen.py	Adds coverage ensuring ROI curves are cleared and detached pin labels omit intensity for RGB images.
tests/unit_tests/test_crosshair.py	Adds coverage ensuring crosshair live/pinned labels omit scalar intensity for RGB images.
bec_widgets/widgets/plots/plot_base.py	Skips intensity extraction for detached pin labels when the image is RGB.
bec_widgets/widgets/plots/image/image_base.py	Guards ROI slice computation to scalar 2D images and adds a helper to clear stale ROI curves when unsupported images arrive.
bec_widgets/utils/crosshair.py	Skips intensity extraction for crosshair coordinate labels when the image is RGB.

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[codecov]

Codecov Report

❌ Patch coverage is 89.47368% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
bec_widgets/widgets/plots/plot_base.py	0.00%	1 Missing and 1 partial ⚠️

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[github-actions]

Benchmark comparison

Threshold: 20% (lower is better).
Result: 0 regression(s), 0 improvement(s) beyond threshold.

No benchmark regression exceeded the configured threshold.

No benchmark improvement exceeded the configured threshold.

All benchmark results

Benchmark	Baseline	Current	Change	Status
BEC IPython client with companion app	2.20399 s	2.19435 s	-0.44%	ok
BEC IPython client without companion app	2.18623 s	2.15286 s	-1.53%	ok
Import bec_widgets	0.0131978 s	0.0137589 s	+4.25%	ok
tests/unit_tests/benchmarks/test_dock_area_benchmark.py::test_add_waveform_to_dock_area	0.158608 s	0.161921 s	+2.09%	ok