Add Spring 2026 section to Past Talks

Author: RSTZZZ

stamina/index.html

@@ -216,6 +216,8 @@ <h4>[DATE Y/M/D]</h4>
 
             <h3 style="text-align:center">Past Talks (<a href="https://www.youtube.com/playlist?list=PLYndSwsn9HYYl5enbCIXpuFAyqgFDe7_V">Youtube Playlist</a>)</h3>
 
+            <h4 style="text-align:center; margin-top:30px;">Spring 2026</h4>
+
             <h4>2026/06/02</h4>
             <li>
               <b><a href="[PAPER LINK]">Multi-Model Training for Multi-Agent Communication Skills</a></b>
@@ -245,7 +247,7 @@ <h4>2026/06/02</h4>
             </li>
 
 
-            <h4 style="text-align:center; margin-top:30px;">Spring 2026</h4>
+            
 
             <h4>2026/05/19</h4>
             <li>