Initial Flutter project added

lib/widgets/primary_button.dart

@@ -0,0 +1,19 @@
+import 'package:flutter/material.dart';
+class PrimaryButton extends StatelessWidget {
+  final String label;
+  final VoidCallback onTap;
+  final bool busy;
+  const PrimaryButton({super.key, required this.label, required this.onTap, this.busy = false});
+  @override
+  Widget build(BuildContext context) {
+    return SizedBox(
+      width: double.infinity,
+      child: ElevatedButton(
+        onPressed: busy ? null : onTap,
+        style: ElevatedButton.styleFrom(padding: const EdgeInsets.symmetric(vertical: 14), shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(12))),
+        child: busy ? const SizedBox(height: 18, width: 18, child: CircularProgressIndicator(strokeWidth: 2, color: Colors.white)) : Text(label, style: const TextStyle(fontSize: 16)),
+      ),
+    );
+  }
+}
+