feat: implement dynamic payment tracking with local storage and update transaction UI for battery investments

src/app/admin/investors/[id]/investments/[investmentId]/page.tsx

@@ -344,10 +344,61 @@ export default function InvestmentDetailPage({ params }: { params: Promise<{ id:
     date: new Date().toISOString().split('T')[0],
     notes: ''
   });
-  const [investmentPayments, setInvestmentPayments] = useState<any[]>([
+  const [investmentPayments, setInvestmentPayments] = useState<any[]>(() => {
+    if (!investment) return [];
+    const isBatteryPlan = investment.assetType === 'battery' || investment.planName?.toLowerCase().includes('battery');
+
+    if (typeof window !== 'undefined') {
+      const stored = localStorage.getItem(`jaiben_payments_${investmentId}`);
+      if (stored) {
+        try {
+          return JSON.parse(stored);
+        } catch (e) {
+          console.error(e);
+        }
+      }
+    }
+
+    if (isBatteryPlan) {
+      return [
+        {
+          id: `pay_${investmentId}`,
+          date: investment.startDate || '2024-02-01',
+          amount: investment.totalInvestment,
+          paymentMethod: investment.paymentMethod || 'bank',
+          transactionRef: investment.transactionId || 'TXN-BAT-001',
+          status: 'completed',
+          notes: 'Full Payment'
+        }
+      ];
+    }
+
+    if (investmentId === 'ip2') {
+      return [
+        {
+          id: 'pay1_ip2',
+          date: '2024-01-20',
+          amount: investment.totalInvestment,
+          paymentMethod: 'mobile',
+          transactionRef: 'TXN-002',
+          status: 'completed',
+          notes: 'Full Payment'
+        }
+      ];
+    }
+
+    // Default for ip1 or others
+    return [
       { id: 'pay1', date: '2024-01-15', amount: 50000, paymentMethod: 'bank', transactionRef: 'TXN-001', status: 'completed', notes: 'First installment' },
       { id: 'pay2', date: '2024-01-20', amount: 35000, paymentMethod: 'mobile', transactionRef: 'TXN-002', status: 'completed', notes: 'Second installment' },
-  ]);
+    ];
+  });
+
+  useEffect(() => {
+    if (typeof window !== 'undefined') {
+      localStorage.setItem(`jaiben_payments_${investmentId}`, JSON.stringify(investmentPayments));
+    }
+  }, [investmentPayments, investmentId]);
 
   if (!investor || !investment) {
     return (
@@ -622,12 +673,7 @@ export default function InvestmentDetailPage({ params }: { params: Promise<{ id:
                 >
                   Transactions
                 </button>
-                <button
+
-                  onClick={() => setActiveTab('payments')}
-                  className={`px-4 py-2 text-sm font-medium rounded-lg transition-colors ${activeTab === 'payments' ? 'bg-investor text-white' : 'text-slate-600 hover:bg-slate-100'}`}
-                >
-                  Payments
-                </button>
                 <button
                   onClick={() => setActiveTab('pnl')}
                   className={`px-4 py-2 text-sm font-medium rounded-lg transition-colors ${activeTab === 'pnl' ? 'bg-investor text-white' : 'text-slate-600 hover:bg-slate-100'}`}
@@ -762,33 +808,37 @@ export default function InvestmentDetailPage({ params }: { params: Promise<{ id:
                         </thead>
                         <tbody className="divide-y divide-slate-100">
                           <tr>
-                            <td className="px-4 py-3 text-sm text-slate-500">2024-01-15</td>
+                            <td className="px-4 py-3 text-sm text-slate-500">{investment.startDate || '2024-01-15'}</td>
                             <td className="px-4 py-3 text-sm">Investment Funded</td>
                             <td className="px-4 py-3 text-sm"><span className="px-2 py-1 bg-green-100 text-green-700 rounded text-xs">Credit</span></td>
-                            <td className="px-4 py-3 text-sm text-right font-medium text-green-600">+৳85,000</td>
+                            <td className="px-4 py-3 text-sm text-right font-medium text-green-600">+৳{investment.totalInvestment.toLocaleString()}</td>
                             <td className="px-4 py-3 text-sm"><span className="px-2 py-1 bg-green-100 text-green-700 rounded text-xs">Completed</span></td>
                           </tr>
+                          {investment.status === 'active' && (
+                            <>
                               <tr>
                                 <td className="px-4 py-3 text-sm text-slate-500">2024-02-15</td>
                                 <td className="px-4 py-3 text-sm">Monthly Return</td>
                                 <td className="px-4 py-3 text-sm"><span className="px-2 py-1 bg-blue-100 text-blue-700 rounded text-xs">Return</span></td>
-                            <td className="px-4 py-3 text-sm text-right font-medium text-blue-600">+৳1,700</td>
+                                <td className="px-4 py-3 text-sm text-right font-medium text-blue-600">+৳{(investment.monthlyReturn || (isBattery ? 4500 : 1700)).toLocaleString()}</td>
                                 <td className="px-4 py-3 text-sm"><span className="px-2 py-1 bg-green-100 text-green-700 rounded text-xs">Completed</span></td>
                               </tr>
                               <tr>
                                 <td className="px-4 py-3 text-sm text-slate-500">2024-03-15</td>
                                 <td className="px-4 py-3 text-sm">Monthly Return</td>
                                 <td className="px-4 py-3 text-sm"><span className="px-2 py-1 bg-blue-100 text-blue-700 rounded text-xs">Return</span></td>
-                            <td className="px-4 py-3 text-sm text-right font-medium text-blue-600">+৳1,700</td>
+                                <td className="px-4 py-3 text-sm text-right font-medium text-blue-600">+৳{(investment.monthlyReturn || (isBattery ? 4500 : 1700)).toLocaleString()}</td>
                                 <td className="px-4 py-3 text-sm"><span className="px-2 py-1 bg-green-100 text-green-700 rounded text-xs">Completed</span></td>
                               </tr>
                               <tr>
                                 <td className="px-4 py-3 text-sm text-slate-500">2024-04-15</td>
                                 <td className="px-4 py-3 text-sm">Monthly Return</td>
                                 <td className="px-4 py-3 text-sm"><span className="px-2 py-1 bg-blue-100 text-blue-700 rounded text-xs">Return</span></td>
-                            <td className="px-4 py-3 text-sm text-right font-medium text-blue-600">+৳1,700</td>
+                                <td className="px-4 py-3 text-sm text-right font-medium text-blue-600">+৳{(investment.monthlyReturn || (isBattery ? 4500 : 1700)).toLocaleString()}</td>
                                 <td className="px-4 py-3 text-sm"><span className="px-2 py-1 bg-green-100 text-green-700 rounded text-xs">Completed</span></td>
                               </tr>
+                            </>
+                          )}
                         </tbody>
                       </table>
                     </div>
@@ -825,12 +875,14 @@ export default function InvestmentDetailPage({ params }: { params: Promise<{ id:
                   <div className="space-y-4">
                     <div className="flex items-center justify-between">
                       <h4 className="font-semibold text-slate-800">Payment History</h4>
+                      {!isBattery && (investment.totalInvestment - investmentPayments.reduce((sum, p) => sum + p.amount, 0)) > 0 && (
                         <button
                           onClick={() => setShowPartialPaymentModal(true)}
                           className="px-3 py-1.5 text-xs bg-investor text-white rounded-lg flex items-center gap-1 hover:bg-investor-dark"
                         >
                           <Plus className="w-3 h-3" /> Record Payment
                         </button>
+                      )}
                     </div>
 
                     <div className="bg-slate-50 rounded-xl p-4">
@@ -938,24 +990,6 @@ export default function InvestmentDetailPage({ params }: { params: Promise<{ id:
                     <button onClick={() => setShowAssignBatteryModal(true)} className="px-3 py-1.5 text-xs bg-emerald-50 text-emerald-700 border border-emerald-200 rounded-lg flex items-center gap-1 hover:bg-emerald-100 transition-colors">
                       <Plus className="w-3 h-3" /> Assign Existing
                     </button>
-                    <button onClick={() => {
-                      setRegisterBatteryForm({
-                        serialNumber: `SN-${new Date().getFullYear()}-${Math.floor(10000 + Math.random() * 90000)}`,
-                        brand: 'BYD',
-                        model: 'Li-Ion 60V50Ah',
-                        type: 'lithium-ion',
-                        capacity: 50,
-                        voltage: 60,
-                        purchasePrice: 45000,
-                        deposit: 5000,
-                        rentPrice: 150,
-                        investorShare: 100,
-                        investedAmount: investment.totalInvestment / 10
-                      });
-                      setShowRegisterBatteryModal(true);
-                    }} className="px-3 py-1.5 text-xs bg-investor text-white rounded-lg flex items-center gap-1 hover:bg-investor-dark transition-colors">
-                      <Plus className="w-3 h-3" /> Register & Assign New
-                    </button>
                   </div>
                 </div>
                 {assignedBatteries.length > 0 ? (
@@ -1065,20 +1099,6 @@ export default function InvestmentDetailPage({ params }: { params: Promise<{ id:
                     <button onClick={() => setShowAddBikeModal(true)} className="px-3 py-1.5 text-xs bg-blue-50 text-blue-700 border border-blue-200 rounded-lg flex items-center gap-1 hover:bg-blue-100 transition-colors">
                       <Plus className="w-3 h-3" /> Assign Existing
                     </button>
-                    <button onClick={() => {
-                      setRegisterBikeForm({
-                        plateNumber: `DHAKA-METRO-HA-${Math.floor(1000 + Math.random() * 9000)}`,
-                        brand: 'Etron',
-                        model: 'ET50',
-                        currentRent: 150,
-                        location: 'Banani',
-                        purchasePrice: 200000,
-                        rentalType: 'single_rent'
-                      });
-                      setShowRegisterBikeModal(true);
-                    }} className="px-3 py-1.5 text-xs bg-investor text-white rounded-lg flex items-center gap-1 hover:bg-investor-dark transition-colors">
-                      <Plus className="w-3 h-3" /> Register & Assign New
-                    </button>
                   </div>
                 </div>
                 {assignedBikes.length > 0 ? (