fix: add .nojekyll, mark images as binary, use root-relative photo path

Author: Disease Transcriptomics Lab

.gitattributes

@@ -1,2 +1,12 @@
 # Auto detect text files and perform LF normalization
 * text=auto
+
+# Explicitly mark binary files
+*.jpg binary
+*.jpeg binary
+*.png binary
+*.gif binary
+*.ico binary
+*.pdf binary
+*.woff binary
+*.woff2 binary

.nojekyll

@@ -11,7 +11,7 @@
     <div class="about-stack">
 
       <div class="lab-photo-wrap fade-up">
-        <img src="assets/photos/group_photo.jpeg"
+        <img src="/assets/photos/group_photo.jpeg"
              alt="Disease Transcriptomics Lab — group photo" />
       </div>