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0061d5ad825f23a5ec6dfcb147eebd30f2cb969a
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2 Commits

Author SHA1 Message Date
Matthias
4a1cbd105b Add realistic loan amortization with currentBalance back-calculation 
- Extend schema with effectiveAnnualRate, totalInterest, totalAmount
- Back-calculate paid months from currentBalance and rebuild schedule
- Allow schedule calculation from termMonths without monthlyPayment
- Handle NaN form values gracefully
- Show effective rate, total interest and total amount in UI
- Add amortization unit tests
 2026-06-15 20:02:44 +02:00
Matthias
fc0a6fb975 initial commit 2026-06-15 11:33:23 +02:00