feat(course): treatment courses with protocol-driven session planning

Laser is six to eight sessions; the previous design only knew single
appointments, which is the exception rather than the rule.

- CourseProtocol per service: session count and three distinct spacings —
  min is the earliest that is clinically allowed, ideal is best, max is where
  the course starts losing its effect
- Starting a course creates every session up front as `planned` and copies the
  protocol's numbers and per-session params, so changing the protocol tomorrow
  leaves a running course alone
- Suggestions anchor on the last *completed* session, not the course start:
  when session 2 slips, session 3 moves with it
- Slots are ranked by distance from ideal, not by earliest available — day 21
  is worse than day 27 when 28 is the target
- book-all is all-or-nothing inside one transaction, with a moving anchor and a
  90-day horizon; sessions past the horizon stay planned and are reported, not
  treated as failures
- The effective minimum is the stricter of the protocol and the task-09 spacing
  policy, so a clinic rule never fights the protocol
- Cancelling one session returns only that session to planned; abandoning a
  course does not cancel its appointments, which stays an explicit decision

One active course per (patient, service) via active_course_key, the same
partial-uniqueness trick as Appointment::activeSlotKey.

Admin: CourseProtocolsPage, TreatmentCoursePage and a courses tab on the
patient record.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

src/Shared/Tenant/GlobalTables.php

@@ -121,6 +121,9 @@ final class GlobalTables
         // سرویس‌های یک پکیج جزئی از تعریف همان پکیج‌اند، نه دادهٔ مستقل.
         \App\Package\Entity\PackageService::class => \App\Package\Entity\Package::class,
 
+        // پارامترهای هر جلسه جزئی از تعریف همان پروتکل‌اند.
+        \App\Course\Entity\CourseProtocolStep::class => \App\Course\Entity\CourseProtocol::class,
+
         \App\Insurance\Entity\TenantInsuranceCategoryCoverage::class => \App\Insurance\Entity\TenantInsurance::class,
         \App\Insurance\Entity\TenantServiceCoverage::class           => \App\Insurance\Entity\TenantInsurance::class,