14 lines
767 B
Markdown
14 lines
767 B
Markdown
# Treatment Sessions are separate from Appointments
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Multi-session treatments (laser courses, botox top-ups) need a session that keeps its number and its
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clinical record across cancellations and reschedules, and they must not lock eight months of calendar
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slots the moment a course starts. So a Treatment Session is its own record owning the clinical data,
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holding an optional reference to an Appointment; booking a session creates the Appointment, and
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rescheduling swaps it without disturbing the session.
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## Considered Options
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Making the Appointment itself the session was rejected: session numbering would break on every
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cancellation, and pre-creating every future session as a real Appointment would occupy slots months
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ahead for patients who may never attend.
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