feat: add cut capability to BPMN editor

[barmac]

Closes #1696

Proposed Changes

Same logic as copy. You can cut when there is a selection.

Screen.Recording.2026-02-12.at.16.35.47.mov

Checklist

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  • Link to related issue(s), i.e. Closes {LINK_TO_ISSUE} or Related to {LINK_TO_ISSUE}
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[Copilot]

Pull request overview

Adds support for enabling the Cut operation in the BPMN editor when elements are selected, aligning it with the existing Copy behavior and enabling the corresponding menu item / keyboard shortcut flow.

Changes:

• Enable cut in BPMN editor tab state when there is a non-empty selection (platform + cloud BPMN editors).
• Update resources/diagram/simple.bpmn (re-serialization / metadata + DI waypoint serialization changes).

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 3 comments.

File	Description
resources/diagram/simple.bpmn	Re-serialized BPMN fixture (exporter metadata + DI waypoint formatting/order changes).
client/src/app/tabs/cloud-bpmn/BpmnEditor.js	Enables cut based on BPMN selection length in cloud BPMN editor.
client/src/app/tabs/bpmn/BpmnEditor.js	Enables cut based on BPMN selection length in platform BPMN editor.

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[nikku]

Last last mile - consider to add to context menu:

[nikku]

Done via 4e96cfc

[barmac]

Thanks Nico!