chore: remove unused variables and imports

Cleaned up 24 lint warnings across 19 files:
- Removed unused imports (COMMON_EXPENSES, CONCRETE_PRICES, Slider, etc.)
- Removed unused variables (winnerColor, tableWidth, currencySymbol, etc.)
- Removed dead code assignments

All 109 test files (444 tests) still pass.
Lint now reports 0 errors and 0 warnings.

Co-Authored-By: Claude Opus 4.5 <[email protected]>

Author: kitfunso

src/components/calculators/BuyVsRent/BuyVsRent.tsx

@@ -48,14 +48,6 @@ export default function BuyVsRent() {
     setInputs(getDefaultInputs(newCurrency));
   };
 
-  // Get winner color
-  const winnerColor =
-    result.finalComparison.winner === 'buy'
-      ? 'text-emerald-400'
-      : result.finalComparison.winner === 'rent'
-        ? 'text-blue-400'
-        : 'text-[var(--color-cream)]';
-
   return (
     <ThemeProvider defaultColor="green">
       <Card variant="elevated">

src/components/calculators/CarBuyLease/calculations.ts

@@ -38,13 +38,11 @@ export function calculateCarBuyLease(inputs: CarBuyLeaseInputs): CarBuyLeaseResu
 
   // Year-by-year comparison
   const yearByYear: YearComparison[] = [];
-  const totalMonths = yearsToOwn * 12;
 
   let buyCumulative = downPayment;
   let leaseCumulative = leaseDownPayment;
   let currentCarValue = vehiclePrice;
   let loanBalance = loanAmount;
-  let leaseNumber = 1;
   let leaseMonthsUsed = 0;
   let totalExcessMiles = 0;
 
@@ -87,7 +85,6 @@ export function calculateCarBuyLease(inputs: CarBuyLeaseInputs): CarBuyLeaseResu
         // Start new lease
         leaseYearCost += leaseDownPayment;
         leaseMonthsUsed = 0;
-        leaseNumber++;
       }
     }
     leaseCumulative += leaseYearCost;

src/components/calculators/ConferenceRoomCalculator/calculations.ts

@@ -144,7 +144,6 @@ export function calculateConferenceRoom(inputs: ConferenceRoomInputs): Conferenc
     };
   } else if (seatingStyle === 'boardroom') {
     // Single large table
-    const tableWidth = Math.min(5, effectiveWidth * 0.4);
     const tableLength2 = Math.min(seatingLength - 4, 20);
     const seatsLong = Math.floor(tableLength2 / 2.5) * 2; // both long sides
     const seatsShort = 2; // ends

src/components/calculators/ConsultingRate/ConsultingRate.tsx

@@ -6,7 +6,7 @@
 
 import { useState, useMemo } from 'preact/hooks';
 import { calculateConsultingRate } from './calculations';
-import { getDefaultInputs, type ConsultingRateInputs, COMMON_EXPENSES } from './types';
+import { getDefaultInputs, type ConsultingRateInputs } from './types';
 import {
   type Currency,
   getCurrencySymbol,

src/components/calculators/EmployeeCost/calculations.ts

@@ -30,11 +30,6 @@ export function calculateEmployeeCost(inputs: EmployeeCostInputs): EmployeeCostR
   const totalPtoDays = ptoDays + holidays;
   const workingDaysPerYear = weeksPerYear * 5 - totalPtoDays;
   const actualWorkingHours = workingDaysPerYear * (hoursPerWeek / 5);
-  const totalAnnualHours = weeksPerYear * hoursPerWeek;
-
-  // Cost of PTO (paid for time not worked)
-  const dailyRate = annualSalary / (weeksPerYear * 5);
-  const ptoCost = dailyRate * totalPtoDays;
 
   // Total benefits cost
   const totalBenefits = healthInsurance + retirementMatch + otherBenefits;

src/components/calculators/FenceCalculator/FenceCalculator.tsx

@@ -9,7 +9,6 @@ import { calculateFence } from './calculations';
 import {
   getDefaultInputs,
   MATERIAL_PRICES,
-  CONCRETE_PRICES,
   type FenceCalculatorInputs,
   type FenceMaterial,
   type FenceHeight,

src/components/calculators/GraduationPartyPlanner/calculations.ts

@@ -15,7 +15,6 @@ export function calculateGraduationParty(inputs: GraduationPartyInputs): Graduat
     currency,
     guestCount,
     graduationType,
-    partyStyle,
     menuStyle,
     partyDuration,
     includeMainDish,

src/components/calculators/JobOfferComparison/JobOfferComparison.tsx

@@ -21,7 +21,6 @@ import {
   CurrencySelector,
   Label,
   Input,
-  Slider,
   Grid,
   Divider,
   ResultCard,

src/components/calculators/MovingCost/MovingCost.tsx

@@ -14,12 +14,7 @@ import {
   type MoveMethod,
   type Season,
 } from './types';
-import {
-  type Currency,
-  getCurrencySymbol,
-  getInitialCurrency,
-  formatCurrency,
-} from '../../../lib/regions';
+import { type Currency, getInitialCurrency, formatCurrency } from '../../../lib/regions';
 import {
   ThemeProvider,
   Card,
@@ -67,8 +62,6 @@ export default function MovingCost() {
     getDefaultInputs(getInitialCurrency())
   );
 
-  const currencySymbol = getCurrencySymbol(inputs.currency);
-
   const result = useMemo(() => calculateMovingCost(inputs), [inputs]);
 
   const updateInput = <K extends keyof MovingCostInputs>(field: K, value: MovingCostInputs[K]) => {

src/components/calculators/OvertimeCalculator/calculations.ts

@@ -9,9 +9,6 @@ import { US_TAX_BRACKETS, UK_TAX_BRACKETS } from './types';
 import type { Currency } from '../../../lib/regions';
 import { formatCurrency as formatCurrencyByRegion } from '../../../lib/regions';
 
-/** FICA tax rate (Social Security 6.2% + Medicare 1.45%) */
-const FICA_RATE = 0.0765;
-
 /** Social Security wage base for 2025 */
 const SS_WAGE_BASE = 176100;
 
@@ -133,12 +130,10 @@ export function calculateOvertime(inputs: OvertimeCalculatorInputs): OvertimeCal
 
   // Monthly breakdown showing cumulative effect and diminishing returns
   const monthlyBreakdown: OvertimeCalculatorResult['monthlyBreakdown'] = [];
-  let cumulativeGross = 0;
   let cumulativeNet = 0;
 
   for (let month = 1; month <= 12; month++) {
     const monthlyGross = (weeklyGrossOT * WEEKS_PER_YEAR) / 12;
-    cumulativeGross += monthlyGross;
 
     // Calculate tax with progressive income
     const incomeToDate = currentAnnualIncome * (month / 12);