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Opaque types, named constants, no defaults in Nbfi.scala#98
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- State: remove 7 defaults, all 13 fields explicit - zero: def → val in object State companion - initial: remove redundant PLN wrapping - step: wage/domesticCons → PLN, unempRate/bankNplRatio → Ratio, yields/returns/depositRate → Rate - Helper methods: bankTightness(Ratio)→Ratio, tfiInflow → PLN, nbfiOrigination/Repayment/Defaults take PLN/Ratio, return PLN - Extract 6 named constants (NplTightnessFloor/Range, UnempDefaultThreshold, ExcessReturnSens/Cap, MonthsPerYear) - Tests: mkStep helper, opaque type assertions
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Summary
State: removed 7 defaults — all 13 fields explicitzero:def→valinobject Statecompanioninitial: removed redundantPLN(x.toDouble)wrappingstep:wage/domesticCons→PLN,unempRate/bankNplRatio→Ratio, yields/returns/depositRate →RatebankTightness(Ratio) → Ratio,tfiInflow → PLN,nbfiOrigination/Repayment/DefaultstakePLN/Ratio, returnPLNNplTightnessFloor,NplTightnessRange,UnempDefaultThreshold,ExcessReturnSens,ExcessReturnCap,MonthsPerYear)mkStephelper, opaque type assertions throughout5 files, −129/+193. Pure refactoring, no behavioral changes.
Test plan
sbt test— 1245 tests passvar, zero field defaults in Nbfi.scala