docs: add landing page for the QR code printed in the poster for the derse26 conference

Author: ecarrenolozano

docs/community/events/derse_26.md

@@ -0,0 +1,45 @@
+<div class="grid cards" markdown>
+
+-   ## :octicons-mark-github-24: OntoGraph — Source Code & Contributions
+
+    **Explore the repository, report issues, and contribute.**
+
+    - Browse the full source code
+    - Review open issues and roadmap
+    - Improve documentation or submit pull requests
+
+    [:octicons-arrow-right-24: Visit the GitHub Repository](https://github.com/saezlab/ontograph)
+
+</div>
+
+
+<div class="grid cards" markdown>
+
+-   ## :material-flask-outline: SaezLab — Computational Systems Biology
+
+    **Discover research-driven software projects and collaborations.**
+
+    - Systems biology tools
+    - Omics data analysis pipelines
+    - Open scientific software initiatives
+    - Explore [OmniPath here](https://omnipathdb.org/)
+
+    [:octicons-arrow-right-24: Visit SaezLab](https://saezlab.org/)
+
+</div>
+
+
+<div class="grid cards" markdown>
+
+-   ## :material-domain: Scientific Software Center  
+    Heidelberg University
+
+    **Research software engineering, consulting, and infrastructure.**
+
+    - RSE services
+    - Training & workshops
+    - Institutional software support
+
+    [:octicons-arrow-right-24: Visit the Scientific Software Center](https://www.ssc.uni-heidelberg.de/en)
+
+</div>

mkdocs.yml

@@ -63,6 +63,7 @@ nav:
                 -   relations: reference/source/ontograph/queries/relations.md
                 -   introspection: reference/source/ontograph/queries/introspection.md
 -   Community:
+    -   Events: community/events/derse_26.md
     -   Join Us: community/index.md
     -   Where to Start: community/contribute.md
     -   Contribute to the Documentation: community/contribute-docs.md