Add a patient message/communication log: a new PatientMessage entity
(record-scoped, CASCADE) + repository, and owner-scoped endpoints
(GET messages, POST message, DELETE message) with a validated channel
(sms/note/call/email). Wire the "پیامها" tab in PatientDetailPage
(send box + list + delete). PHPUnit covers create/list/delete + ownership
+ validation; Vitest covers the tab. API docs updated.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
