feat(privacy): add mobile/SMS no-sharing clause

Explicitly state mobile numbers and SMS opt-in data are not
shared with third parties for marketing purposes. Required for
SMS campaign compliance.

privacy.html

@@ -53,11 +53,15 @@
         <p>
             We do not share your personal information with anyone except to comply with the law, develop our products, or protect our rights.
         </p>
-        <h2>4. Security</h2>
+        <h2>4. Mobile information and SMS</h2>
+        <p>
+            We do not share mobile numbers or SMS opt-in data with third parties for marketing purposes. Your mobile information is used solely to deliver the services you requested and to communicate with you directly.
+        </p>
+        <h2>5. Security</h2>
         <p>
             We take the security of your personal information seriously and take reasonable measures to protect it.
         </p>
-        <h2>5. Changes to this policy</h2>
+        <h2>6. Changes to this policy</h2>
         <p>
             We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page.
         </p>