Move the squad manager from an opaque, unvalidated wire ref in the squad
extension to a resolved, ownership-backed assignment (Core migration 0023
squad_managers).
- squad::to_proposed reverse-resolves the manager wire ref to a Core
owned_card_id on ProposedSquad; an unresolvable manager is reported as
an unresolved wire id (a live save is refused rather than assigning a
manager the club does not own).
- squad_ext: drop the opaque manager field from Fifa17SquadExtensionV1
(clean cutover) and the now-unused SquadEntityRef->WireItemRef From.
- squad_projection: project the manager as the STATIC_REVERSED [{id,dream}]
wire ref resolved from the owned assignment; absent -> [] (never faked).
Richer manager itemData (contract/league/nation) is INFERRED-only and
left out pending wire reversal.
- import(apply): drop a historical dangling manager ref rather than
failing the whole import (live PUTs still refuse an unresolved manager).
funman300
d37a9d5b5e