add more speaker and participant images

_pages/2019.md

@@ -14,6 +14,12 @@ The inaugural IICCSSS took place in 2019 in Freiburg, Germany 😊
 **ECTS:** 2  
 **Format:** Lectures, workshops, contributed (blitz) talks, hackathon
 
+<div class="row mt-3">
+    <div class="col-sm mt-3 mt-md-0">
+        {% include figure.liquid path="assets/img/participants-2019.png" title="Our 2019 participants" class="img-fluid rounded z-depth-1" zoomable=true %}
+    </div>
+</div>
+
 **Topics:**
 
 - _Bayesian Models of Cognition_ 🧠

_pages/2022.md

@@ -14,6 +14,12 @@ The third IICCSSS was successfully held for an entire week in 2022 in Tübingen,
 **ECTS:** 2  
 **Format:** Lectures, blitz talks, and a panel discussion 📚
 
+<div class="row mt-3">
+    <div class="col-sm mt-3 mt-md-0">
+        {% include figure.liquid path="assets/img/participants-2022.jpg" title="Our 2022 participants" class="img-fluid rounded z-depth-1" zoomable=true %}
+    </div>
+</div>
+
 **Topics:**
 
 - _Decision Making_ 🤔

_pages/2023.md

@@ -12,6 +12,12 @@ nav: false
 **ECTS:** 2  
 **Format:** Lectures, lightning talks, hackathon, and a panel discussion
 
+<div class="row mt-3">
+    <div class="col-sm mt-3 mt-md-0">
+        {% include figure.liquid path="assets/img/participants-2023.jpg" title="Our 2023 participants" class="img-fluid rounded z-depth-1" zoomable=true %}
+    </div>
+</div>
+
 ### Speakers
 
 <div class="projects">

_pages/2024.md

@@ -11,6 +11,12 @@ nav: false
 **Attendees:** Over 50 attendees  
 **Format:** Lectures, lightning talks, hackathon, institute tour, and a panel discussion
 
+<div class="row mt-3">
+    <div class="col-sm mt-3 mt-md-0">
+        {% include figure.liquid path="assets/img/participants-2024.jpg" title="Our 2024 participants" class="img-fluid rounded z-depth-1" zoomable=true %}
+    </div>
+</div>
+
 ### Speakers
 
 <div class="projects">

_pages/speakers.md

@@ -25,13 +25,13 @@ nav_order: 4
         name="Loes van Dam"
         affiliation="TU Darmstadt"
         url="https://www.humanw.tu-darmstadt.de/kontakt_details_71552.en.jsp"
-        img="assets/img/speakers/female_placeholder.jpg"
+        img="assets/img/speakers/2025/loesvandam.jpg"
     %}
     {% include people.liquid
         name="Alexander Gail"
         affiliation="University Göttingen"
         url="https://www.uni-goettingen.de/de/57950.html"
-        img="assets/img/speakers/male_placeholder.jpg"
+        img="assets/img/speakers/2025/alexandergail.jpg"
     %}
     {% include people.liquid
         name="Katharina Lüth"
@@ -49,7 +49,7 @@ nav_order: 4
         name="Vildan Salikutluk"
         affiliation="TU Darmstadt"
         url="https://www.psychologie.tu-darmstadt.de/models-of-higher-cognition/mod/members_mhc/members_mhc_detail_59392.en.jsp"
-        img="assets/img/speakers/female_placeholder.jpg"
+        img="assets/img/speakers/2025/vildansalikutluk.jpg"
     %}
     {% include people.liquid 
         name="Ute Schmid"