Ask for name and email before sending visitors to Amazon or Apple Books (switchable in admin → Books); v2.29.0

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/AdminPage.tsx

@@ -5801,6 +5801,20 @@ const [dashboardNow, setDashboardNow] = useState(() => new Date())
                 <h2>Books</h2>
                 <p>Amazon books shown in the Reading List section on the Resources page. Add a cover image, description, and Amazon link for each book.</p>
               </div>
+              <div className="admin-field" style={{ marginBottom: '1.25rem' }}>
+                <label htmlFor="gate-store-links" style={{ display: 'flex', gap: 8, alignItems: 'center', cursor: 'pointer' }}>
+                  <input
+                    id="gate-store-links"
+                    type="checkbox"
+                    checked={form.gateStoreLinks !== false}
+                    onChange={e => setForm(f => ({ ...f, gateStoreLinks: e.target.checked }))}
+                  />
+                  Ask for name and email before sending visitors to Amazon or Apple Books
+                </label>
+                <p className="admin-field-help">
+                  Applies to the Amazon and Apple Books buttons on the Reading List and on the study guide and download pages. Each visitor is added to your Inbox as a contact, and subscribed if they leave the box ticked. Turn it off to send visitors straight to the store.
+                </p>
+              </div>
               {(form.customLinks ?? []).filter(l => l.placement === 'books').length === 0 && <p className="admin-stats-note">No books yet.</p>}
               {(form.customLinks ?? []).filter(l => l.placement === 'books').map(book => (
                 <div key={book.id} className="admin-array-row">