10 July Release to Production

CHANGELOG.md

@@ -0,0 +1,44 @@
+# Changelog
+
+All notable changes to this project are documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/).
+Releases are identified by deploy date.
+
+## [Unreleased]
+
+## [2026-07-10]
+
+First tracked production release. Promotes the accumulated calculator work from
+late June through 10 July (PR [#157](https://github.com/SU-SWS/ifdm_learning_apps/pull/157),
+`dev` into `1.x`). All blocker and high-priority issues raised during review are resolved.
+
+### Added
+
+- Inline validation and error messaging for the Time Value of Money calculator, per the TVM error document (#134, #146).
+- Inline validation and error messaging for the Compounding Frequency calculator (#140).
+- Inline validation and error messaging for the Inflation Impact calculator (#141).
+- Error states and input standards for the Interest calculator (#142).
+- Inline validation and error messaging for the Mortgage v2 calculator (#145).
+- Input defaulting for the TVM Present Value, Future Value, and Payment fields so blank fields resolve to sensible defaults (#144).
+
+### Changed
+
+- Interest calculator math, error handling, and layout updated to match spec (#148).
+- Compounding Frequency default period changed to Annual (#147).
+- Default compounding frequency set for the TVM calculator (#144).
+- Color tokens updated and corrected across calculators (#152).
+- UI cleanup plus label and punctuation corrections to match design (#134, #148).
+
+### Fixed
+
+- TVM interest-rate solver now returns the correct rate for high-rate and edge-case scenarios (#152).
+- TVM interest-rate solver now handles high and mixed-frequency (cross-compounding) rates correctly (#154).
+- TVM edge-case math error in the rate calculation (#152).
+- TVM zero-rate present value calculation (#144).
+- TVM interest-rate calculator correction (#146).
+- Inflation Impact currency input no longer corrupts the value when a field is re-edited, and the empty-field error no longer fires at the wrong time (#153).
+- Inflation Impact onChange handler now accepts valid entries, including negative values (#151).
+- Interest calculator percent edge cases (#156).
+- Interest calculator interest-rate calculation (#142).
+- All remaining blocker and high-priority issues cleared ahead of the production release (#156).

app/interactives/compounding-frequency-calculator/page.tsx

@@ -121,7 +121,7 @@ export default function CompoundInterestCalculator() {
   const [initialAmount, setInitialAmount] = useState<string>("")
   const [annualRate, setAnnualRate] = useState<string>("")
   const [periods, setPeriods] = useState<string>("")
-  const [selectedCompounding, setSelectedCompounding] = useState<CompoundingPeriod>("monthly")
+  const [selectedCompounding, setSelectedCompounding] = useState<CompoundingPeriod>("annually")
 
   // Error state is declared early so setters are available to flagSkippedFields.
   const [initialAmountError, setInitialAmountError] = useState<string>("")
@@ -505,19 +505,19 @@ export default function CompoundInterestCalculator() {
           <Card className="w-full lg:w-1/2 bg-[var(--card-background)] rounded-3xl p-[32px]">
             <CardContent className="p-0">
               <h2 className="text-[20px] font-bold mb-1">
-                Balance after{" "}
+                Balance after
                 {hasError
-                  ? "-"
-                  : `${periods} ${getPeriodText(selectedCompounding, Number(periods))}`}
+                  ? ""
+                  : ` ${periods} ${getPeriodText(selectedCompounding, Number(periods))}`}
               </h2>
               <p className="text-3xl/normal font-bold text-[var(--color-teal)] mb-5 overflow-auto">
                 {hasError ? "-" : balanceStr}
               </p>
               <p className="text-[20px] font-bold mb-1">
-                Interest accrued over{" "}
+                Interest accrued over
                 {hasError
-                  ? "-"
-                  : `${periods} ${getPeriodText(selectedCompounding, Number(periods))}`}
+                  ? ""
+                  : ` ${periods} ${getPeriodText(selectedCompounding, Number(periods))}`}
               </p>
               <p className="text-3xl/normal font-bold text-foreground overflow-auto">
                 {hasError ? "-" : interestStr}