Fix Total Project Cost calculation: include upfront lease cost

- Added upfrontLeaseCostCr to totalCostCr calculation
- IDC and upfront fee now calculated on full project cost including lease
- Updated Land & Common card to show lease cost is included in total

packages/web/components/InputsTab.tsx

@@ -683,7 +683,13 @@ export function InputsTab({ scenarioId, inputsJson, onSaved }: Props) {
   const solarTotalCr = computeCostWithTax(costItems, "SolarOnly");
   const windTotalCr = computeCostWithTax(costItems, "WindOnly");
   const bessTotalCr = computeCostWithTax(costItems, "BESSOnly");
-  const totalCostCr = solarTotalCr + windTotalCr + bessTotalCr;
+  
+  // Calculate upfront lease cost based on user inputs (acres * rate * years)
+  const leaseRate = gv(inputs, "project", "land_lease_rate", 0.4);
+  const leaseYears = gv(inputs, "project", "land_lease_years", 5);
+  const upfrontLeaseCostCr = effectiveLandAcres * leaseRate * leaseYears;
+  
+  const totalCostCr = solarTotalCr + windTotalCr + bessTotalCr + upfrontLeaseCostCr;
 
   // COD sync helper
   function handlePlantCodChange(v: string) {
@@ -981,7 +987,7 @@ export function InputsTab({ scenarioId, inputsJson, onSaved }: Props) {
         <NumField
           label="Lease Rate"
           sub="Lakh/acre/year"
-          value={gv(inputs, "project", "land_lease_rate", 0.4)}
+          value={leaseRate}
           onChange={(v) => upd("project", "land_lease_rate", v)}
           step={0.05}
           min={0}
@@ -990,7 +996,7 @@ export function InputsTab({ scenarioId, inputsJson, onSaved }: Props) {
         <NumField
           label="Lease Years"
           sub="3, 5, 10 or custom"
-          value={gv(inputs, "project", "land_lease_years", 5)}
+          value={leaseYears}
           onChange={(v) => upd("project", "land_lease_years", v)}
           step={1}
           min={1}
@@ -998,7 +1004,7 @@ export function InputsTab({ scenarioId, inputsJson, onSaved }: Props) {
           suffix="yr"
         />
         <div className="col-span-3 text-[10px] text-muted-foreground py-1">
-           Upfront Lease Cost: <span className="font-medium text-foreground">{effectiveLandAcres * (gv(inputs, "project", "land_lease_rate", 0.4) || 0) * (gv(inputs, "project", "land_lease_years", 5) || 0)} Cr</span>
+           Upfront Lease Cost (included in Total Project Cost): <span className="font-medium text-foreground">{upfrontLeaseCostCr.toFixed(2)} Cr</span>
         </div>
       </CollapsibleCard>
 

packages/web/components/ScenarioWizard.tsx

@@ -4,6 +4,11 @@ import { useState } from "react";
 import { Button } from "@/components/ui/button";
 import type { ScenarioInputPayload } from "@/lib/api";
 
+// Helper to convert decimal to percentage display
+function pct(raw: number): number {
+  return parseFloat((raw * 100).toFixed(2));
+}
+
 const LOCATION_OPTIONS = [
   { value: "RJ", label: "Rajasthan (High Solar)" },
   { value: "GJ", label: "Gujarat (High Solar)" },
@@ -359,14 +364,18 @@ function StepSolver({
         />
       </Field>
       {state.solver_mode === "solve_tariff" ? (
-        <Field label="Target Equity IRR (e.g. 0.18 = 18%)">
+        <Field label="Target Equity IRR">
+          <div className="flex items-center gap-1.5">
             <Input
               type="number"
-            value={state.target_irr}
-            step={0.01}
-            min={0.05}
-            onChange={(v) => set("target_irr", Number(v))}
+              value={pct(state.target_irr)}
+              step={1}
+              min={5}
+              max={40}
+              onChange={(v) => set("target_irr", Number(v) / 100)}
             />
+            <span className="text-sm text-muted-foreground">%</span>
+          </div>
         </Field>
       ) : (
         <Field label="Fixed Tariff (INR/kWh)">