UI-3b Task 1: patient display name + exam date setters. Mirror the existing caseMeta setter pattern — trim, null-clears, malformed exam-date values are a silent no-op (mirrors setSmokingStatus).
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setSmokingStatus
UI-3b Task 1: patient display name + exam date setters. Mirror the existing caseMeta setter pattern — trim,
null-clears, malformed exam-date values are a silent no-op (mirrorssetSmokingStatus).