sitesmith: upgrade banner + scope-replace confirmation dialog

craft/src/panels/sitesmith/ScopeConfirmDialog.tsx

@@ -0,0 +1,36 @@
+import React from 'react';
+
+interface Props {
+  open: boolean;
+  pendingMessage?: string;
+  onConfirm: () => void;
+  onCancel: () => void;
+}
+
+export const ScopeConfirmDialog: React.FC<Props> = ({ open, pendingMessage, onConfirm, onCancel }) => {
+  if (!open) return null;
+  const overlay: React.CSSProperties = { position: 'fixed', inset: 0, background: 'rgba(0,0,0,0.7)', zIndex: 10000, display: 'flex', alignItems: 'center', justifyContent: 'center' };
+  const box:     React.CSSProperties = { background: '#1a1a2e', border: '1px solid #3f3f46', borderRadius: 10, padding: 22, maxWidth: 480, color: '#fff' };
+  const cancel:  React.CSSProperties = { background: '#27272a', color: '#fff', border: 'none', padding: '8px 14px', borderRadius: 6, cursor: 'pointer' };
+  const ok:      React.CSSProperties = { background: '#b91c1c', color: '#fff', border: 'none', padding: '8px 14px', borderRadius: 6, cursor: 'pointer' };
+  return (
+    <div role="dialog" aria-modal="true" style={overlay}>
+      <div style={box}>
+        <h3 style={{ margin: 0 }}>Replace your entire site?</h3>
+        <p style={{ color: '#cbd5e1', fontSize: 14 }}>
+          Sitesmith will replace every page, your header, and your footer with the new design.
+          Manual edits will be lost.
+        </p>
+        {pendingMessage && (
+          <blockquote style={{ borderLeft: '3px solid #7c3aed', paddingLeft: 12, color: '#a5b4fc', fontSize: 13 }}>
+            {pendingMessage}
+          </blockquote>
+        )}
+        <div style={{ display: 'flex', gap: 10, justifyContent: 'flex-end', marginTop: 14 }}>
+          <button onClick={onCancel}  style={cancel}>Cancel</button>
+          <button onClick={onConfirm} style={ok}>Replace site</button>
+        </div>
+      </div>
+    </div>
+  );
+};