feat: Expo scaffold + auth screens + core screens (#39-#46, #48)

app/(app)/payments/index.tsx

@@ -0,0 +1,18 @@
+import { View, Text, TouchableOpacity } from 'react-native';
+import { useRouter } from 'expo-router';
+
+export default function PaymentsScreen() {
+  const router = useRouter();
+  return (
+    <View className="flex-1 bg-gray-50 pt-14 px-4">
+      <Text className="text-2xl font-bold text-gray-900 mb-6">Payments</Text>
+      <TouchableOpacity
+        className="bg-primary rounded-2xl p-5 items-center"
+        onPress={() => router.push('/(app)/payments/record')}
+      >
+        <Text className="text-white text-lg font-semibold">💳 Record Payment</Text>
+        <Text className="text-blue-100 text-sm mt-1">Accept cash, GCash, or bank transfer</Text>
+      </TouchableOpacity>
+    </View>
+  );
+}

app/(app)/payments/record.tsx

@@ -0,0 +1,116 @@
+import { useState } from 'react';
+import { View, Text, TextInput, TouchableOpacity, ScrollView, Alert, ActivityIndicator } from 'react-native';
+import { useRouter } from 'expo-router';
+import { api } from '../../../services/api';
+
+const METHODS = ['Cash', 'GCash', 'Maya', 'Bank Transfer'];
+
+export default function RecordPaymentScreen() {
+  const router = useRouter();
+  const [accountNumber, setAccountNumber] = useState('');
+  const [client, setClient] = useState<any>(null);
+  const [amount, setAmount] = useState('');
+  const [method, setMethod] = useState('Cash');
+  const [reference, setReference] = useState('');
+  const [loading, setLoading] = useState(false);
+  const [searching, setSearching] = useState(false);
+
+  const searchClient = async () => {
+    if (!accountNumber.trim()) return;
+    setSearching(true);
+    try {
+      const res = await api.get(`/api/v1/clients?accountNumber=${accountNumber.trim()}`);
+      const clients = res.data?.data ?? res.data?.results ?? [];
+      setClient(clients[0] ?? null);
+      if (!clients[0]) Alert.alert('Not found', 'No client with that account number.');
+    } catch { Alert.alert('Error', 'Could not search clients.'); }
+    finally { setSearching(false); }
+  };
+
+  const submit = async () => {
+    if (!client || !amount) return Alert.alert('Required', 'Select a client and enter amount.');
+    setLoading(true);
+    try {
+      await api.post('/api/v1/payments', {
+        clientId: client.id,
+        amount: parseFloat(amount),
+        paymentMethod: method.toLowerCase().replace(' ', '_'),
+        referenceNumber: reference || undefined,
+        paymentDate: new Date().toISOString().split('T')[0],
+      });
+      Alert.alert('Success', 'Payment recorded!', [{ text: 'OK', onPress: () => router.back() }]);
+    } catch (e: any) {
+      Alert.alert('Failed', e?.response?.data?.message ?? 'Could not record payment.');
+    } finally { setLoading(false); }
+  };
+
+  return (
+    <ScrollView className="flex-1 bg-gray-50 pt-14">
+      <TouchableOpacity className="px-4 mb-4" onPress={() => router.back()}>
+        <Text className="text-primary">← Back</Text>
+      </TouchableOpacity>
+      <Text className="text-2xl font-bold text-gray-900 px-4 mb-6">Record Payment</Text>
+
+      <View className="bg-white mx-4 rounded-2xl p-5 border border-gray-100 mb-4">
+        <Text className="text-sm font-medium text-gray-700 mb-2">Account Number</Text>
+        <View className="flex-row gap-2">
+          <TextInput
+            className="flex-1 border border-gray-300 rounded-xl px-3 py-2.5 text-sm bg-gray-50"
+            placeholder="e.g. 2024-0001"
+            value={accountNumber}
+            onChangeText={setAccountNumber}
+          />
+          <TouchableOpacity className="bg-primary rounded-xl px-4 items-center justify-center" onPress={searchClient}>
+            {searching ? <ActivityIndicator color="#fff" size="small" /> : <Text className="text-white font-medium text-sm">Find</Text>}
+          </TouchableOpacity>
+        </View>
+        {client && (
+          <View className="mt-3 bg-blue-50 rounded-xl p-3">
+            <Text className="text-primary font-semibold">{client.name}</Text>
+            <Text className="text-gray-500 text-xs">{client.accountNumber} · {client.status}</Text>
+          </View>
+        )}
+      </View>
+
+      <View className="bg-white mx-4 rounded-2xl p-5 border border-gray-100 mb-4">
+        <Text className="text-sm font-medium text-gray-700 mb-2">Amount (₱)</Text>
+        <TextInput
+          className="border border-gray-300 rounded-xl px-3 py-2.5 text-sm bg-gray-50"
+          placeholder="0.00"
+          value={amount}
+          onChangeText={setAmount}
+          keyboardType="decimal-pad"
+        />
+
+        <Text className="text-sm font-medium text-gray-700 mt-4 mb-2">Payment Method</Text>
+        <View className="flex-row flex-wrap gap-2">
+          {METHODS.map(m => (
+            <TouchableOpacity
+              key={m}
+              className={`px-4 py-2 rounded-xl border ${method === m ? 'bg-primary border-primary' : 'border-gray-200 bg-white'}`}
+              onPress={() => setMethod(m)}
+            >
+              <Text className={`text-sm font-medium ${method === m ? 'text-white' : 'text-gray-700'}`}>{m}</Text>
+            </TouchableOpacity>
+          ))}
+        </View>
+
+        <Text className="text-sm font-medium text-gray-700 mt-4 mb-2">Reference # (optional)</Text>
+        <TextInput
+          className="border border-gray-300 rounded-xl px-3 py-2.5 text-sm bg-gray-50"
+          placeholder="GCash ref / OR number"
+          value={reference}
+          onChangeText={setReference}
+        />
+      </View>
+
+      <TouchableOpacity
+        className={`mx-4 rounded-2xl py-4 items-center mb-8 ${loading ? 'bg-blue-400' : 'bg-primary'}`}
+        onPress={submit}
+        disabled={loading}
+      >
+        {loading ? <ActivityIndicator color="#fff" /> : <Text className="text-white font-semibold text-base">Record Payment</Text>}
+      </TouchableOpacity>
+    </ScrollView>
+  );
+}