GSAJPlex

This is a financial calculator suite with five practical daily tools on a dark slate vault console. The Vault Gauge Board main screen displays pressure gauge hero dials, pulse chips, weekly activity bars, module heatmaps, horizontal tool polling, insight stacks, and ledger flows. Loan Repayment converts principal, annual interest rate, and years into monthly payments and total interest, accompanied by a loan amortization chart. Savings Goal estimates monthly deposits and annual interest rate required to reach the target through the SavingsRampCurve hub. Tip Split uses TipShareBars to divide bills, tip percentages, and diners into individual totals. Discount and Tax walks the list price through discounts and tax with PriceStepDown and inline step logs to arrive at the final price. Budget Marginal calculates monthly buffer income, fixed costs, and variable expenses with margins. Each module supports full ledger CRUD calculations followed by saving.