chore(control-plane): reconcile crud-gaps work onto friendly-names resolver

Rebased onto feat/control-plane-friendly-names, which had independently reworked name resolution to the client-side pickOrg/pickProject design. Kept that resolver and dropped crud-gaps' server-side ?name= variant; this pass adapts the seams:

• resolveOrgRef walks all pages (ListOrgs is now paginated) then pickOrg
• restore isNotFound + resolvedRefLabel helpers used by the delete commands
• writeNotFoundProblem test helper (friendly-names' resolver tests lack it)