fix: stabilize portfolio scrolling and loading

Remove skeleton swaps and deferred layout estimates, restore reveal state, and use native proximity scrolling for project cards. Also make the Docker build npm registry configurable.

src/components/IsometricFooter/IsometricFooter.tsx

@@ -52,16 +52,16 @@ export default function IsometricFooter({ locale }: { locale: Locale }) {
     <FooterInteraction className={styles.footerContainer}>
       {/* Top Header & Contact Section */}
       <header className={styles.footerHeader}>
-        <h2 className={styles.headerTitle}>
+        <h2 className={styles.headerTitle} data-reveal="soft">
           {copy.title}
         </h2>
 
-        <p className={styles.headerSubtitle}>
+        <p className={styles.headerSubtitle} data-reveal="soft">
           {copy.subtitle}
         </p>
 
         {/* Email Pill Button */}
-        <div className={styles.emailWrapper}>
+        <div className={styles.emailWrapper} data-reveal="scale">
           <a
             href="mailto:amirhosseinkhalili901@gmail.com"
             className={styles.emailPill}