Add real Tino photos: portrait, closeup, and aurora over Engadin

Replace stock hero banner with aurora mountain shot and about
section portrait with actual photo of Tino.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

index.html

@@ -39,7 +39,7 @@
             <a href="#contact" class="btn btn-primary">Termin vereinbaren</a>
         </div>
         <div class="hero-image">
-            <img src="images/hero-banner.jpg" alt="Tino Andri - SelbstHeilungsTechnik & QuantenHeilung im Engadin" class="hero-img">
+            <img src="images/tino-aurora.jpg" alt="Nordlichter über den Engadiner Bergen" class="hero-img">
         </div>
     </header>
 
@@ -48,7 +48,7 @@
         <div class="container">
             <div class="about-grid">
                 <div class="about-image">
-                    <img src="images/testimonials-bg.jpg" alt="Tino Andri Portrait" class="about-img">
+                    <img src="images/tino-portrait.jpg" alt="Tino Andri Portrait" class="about-img">
                 </div>
                 <div class="about-content">
                     <h2 class="section-title">Über mich</h2>