Mirror the ScriptBuilder whitelabel pattern in FlowBuilder so the
`customUi.topBar.path` and `customUi.topBar.editablePath` options actually
take effect:
- add `editablePath?: boolean` to `FlowBuilderWhitelabelCustomUi.topBar`
- gate the EditorHeader block on `customUi?.topBar?.path != false` and pass
`pathEditable`/`summaryEditable` (the latter wires the pre-existing but
unused `editableSummary` flag)
- hide the Path field in FlowSettings when `topBar.editablePath` is false
Defaults are unchanged (`!= false`), so non-whitelabel flows still show the
path header and settings field.
Fixes WIN-2200
Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Ruben FiszelandClaude Opus 4.8
4bddefc518