Implement: Visual Workflow Editor

[rubenvdlinde]

OpenSpec Change: visual-workflow-editor

Spec path: openspec/changes/visual-workflow-editor

Generated from Specter (26 features).

[rubenvdlinde]

[Hydra Supervisor] Auto-stripped build:queued label.

Reason: Spec directory for visual-workflow-editor not found in any known location (checked hydra/openspec/changes/ and procest/openspec/changes/).

This issue references a spec that does not exist on disk — the Builder cannot implement a spec it cannot read. The issue remains open for manual attention.

To re-queue this issue: (1) create the spec under openspec/changes/visual-workflow-editor/ with a valid hydra.json, then (2) re-add the build:queued label.

[rubenvdlinde]

Closing as duplicate of #192 — #192 had significantly more activity, indicating it is the canonical spec-tracking issue. The housekeeping pass picked the wrong canonical (it preferred the newest issue number); flipping the direction.