scenario-form.js: <details> block between name and steps:
- How steps work (operation → target)
- Create: service + output name
- Non-create: instance from scenario or cloud
- Parameters: key=value format with example
- Buttons: ↑↓ reorder, ✕ delete
- scenario-form.js: fix ReferenceError body is not defined in renderEditor()
- utils.js: relativeTime(iso) → 3ч 12м / 2д 5ч / только что
- instances.js: columns created / modified with relativeTime()
- index.html: instanceUid under displayName in infra column