Spsoft test task

[ViBobukh]

Greptile Summary

This PR implements three test tasks: swapping left/right panels in a new layout, moving the Angle tool from MoreTools to MeasurementTools section, and displaying the OHIF version in the viewport overlay.

Key changes:

• Created testTaskInstance layout with tracked.measurements on left and tracked.thumbnailList on right (swapped from longitudinalInstance)
• Added testTaskRoute at path 'test-task' and set it as the active route in modeInstance.routes
• Reorganized toolbar tools: removed Angle from MoreTools and prepended it to MeasurementTools
• Added OHIF version display (with 'v' label) in top-right viewport overlay using process.env.VERSION_NUMBER

Issues found:

• Unused import: TOOLBAR_SECTIONS from ToolbarService is imported but not used
• The code assumes toolbarSections['MoreTools'] and toolbarSections['MeasurementTools'] are arrays without validation

Confidence Score: 4/5

• This PR is safe to merge with minor cleanup needed
• The implementation is straightforward and follows existing patterns. The main issues are an unused import and missing runtime checks, neither of which will cause failures since the underlying data structures appear well-defined in the base mode
• modes/longitudinal/src/index.ts needs attention for the unused import

Important Files Changed

Filename	Overview
extensions/cornerstone/src/customizations/viewportOverlayCustomization.tsx	Added OHIF version display in top-right viewport overlay with environment variable check
modes/longitudinal/src/index.ts	Created test-task route with swapped panels, moved Angle tool from MoreTools to MeasurementTools, includes unused import

_{Last reviewed commit: a67a1fa}

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[greptile-apps]

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[greptile-apps]

check that basicModeInstance.toolbarSections['MoreTools'] and basicModeInstance.toolbarSections['MeasurementTools'] are arrays before using .filter() and spread operator