Show a diff / change preview before saving a segment edit

[adamvialpando]

Summary

Segment edits have no diff or change preview. Nothing surfaces what changed before an edit is saved, and there is no guard against an accidental rule deletion. A mistaken change can ship silently.

Requested improvement

Show a diff or change preview for a segment edit before it is applied, so the user can confirm what is being added, changed, or removed.

Related issues

• Show segment rule changes (diff) in audit log detail view #6726 Show segment rule changes (diff) in audit log detail view