support-action: accept ticketRef/ticketNumber alongside ticketId

Every POST op on /api/internal/support-action requires ticketId as UUID only. ticketNumber -> 400. GET with no query only returns OPEN list, so a closed/specific ticket cited by its SOP-PLUTO-N code is unreachable without a DB connection. vSupportTicket already computes ticketRef = 'SOP-PLUTO-'||ticketNumber - resolving ref/number to id before dispatch is a lookup, not new state. mars's sibling route already accepts ticketId/ticketRef/ticketNumber - match that shape. Reported by support-evolutiva-cc, measured 2026-09-28 on SOP-PLUTO-16 (not urgent - they now hold a read-only DSN workaround).