Update mobile number validation to 9 digits and adjust placeholder; update Gradle init scripts and add new launcher icon

src/screens/LoginScreen.tsx

@@ -52,10 +52,10 @@ export default function LoginScreen() {
   );
 
   const handleContinue = async () => {
-    if (!/^\d{10}$/.test(mobile)) {
-      setError('Please enter a 10-digit mobile number');
-      return;
-    }
+if (!/^\d{9}$/.test(mobile)) {
+  setError('Please enter a 9-digit mobile number');
+  return;
+}
 
     setError('');
     try {
@@ -96,7 +96,7 @@ export default function LoginScreen() {
           <View style={styles.formSection}>
             <CustomInput
               label="Mobile Number"
-              placeholder="e.g. 9876543210"
+              placeholder="e.g. 987654321"
               value={mobile}
               onChangeText={(text) => {
                 setMobile(text.replace(/\D/g, ''));
@@ -104,7 +104,7 @@ export default function LoginScreen() {
                 if (error) setError('');
               }}
               keyboardType="phone-pad"
-              maxLength={10}
+              maxLength={9}
               icon="call-outline"
               error={error}
             />