feat: Extend React/Java app to match Lua functionality
Backend:
- Add Pretreatment record for pre-treatment data
- Extend Sample with pretreatment, clinicalExamDate, internalNote
- Extend TherapyRecommendation with detail fields (count, duration, dosage, location)
- Add startvacVaccination and noAntibioticTreatment flags
- Add null-safety defaults for MongoDB compatibility
Frontend:
- Add pretreatment fields to SampleRegistrationPage
- Add special pathogens section to AnamnesisPage
- Add therapy detail pickers to TherapyPage
- Improve AntibiogramPage: full text labels, centered headers
- Fix AdminDashboardPage TypeScript error in chart tooltip
Styling:
- Enlarge matrix buttons for S/I/R text
- Add matrix-col class for centered table columns