Adding Bohdan Wynnyckyj to the fellows page on the IRIS-HEP Website (#2885)

* Add fellow photo

* Add fellow page for Bohdan Wynnyckyj

* style: pre-commit fixes

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: bwynnyck

_fellows/2026/bwynnyck.md

@@ -0,0 +1,38 @@
+```
+---
+layout: fellow
+pagetype: fellow
+shortname: bwynnyck
+permalink: /fellows/bwynnyck.html
+fellow-name: Bohdan Ivan Wynnyckyj
+title: Bohdan Ivan Wynnyckyj - IRIS-HEP Fellow
+active: True
+dates:
+  start: 2026-06-22
+  end: 2026-09-13
+photo: /assets/images/team/fellows-2026/Bohdan-Wynnyckyj.jpg
+institution: Taras Shevchenko National University of Kyiv
+e-mail: bohdan.wynnyckyj@proton.me
+focus-area: IA
+challenge-area: AGC
+project_title: ATLAS-event-generation: Modernising Event
+Generation in ATLAS Athena
+project_goal: >
+    This project will focus on improving event generation workflows within the ATLAS Athena
+software framework. The project aims to make configuration and metadata handling more
+robust and less error-prone, reduce reliance on user-specific settings, and align event
+generation with modern configuration patterns used elsewhere in Athena. The student will also
+explore updates that improve compatibility with multi-threaded execution and provide clean,
+well-documented example configurations. The project offers hands-on experience with
+large-scale HEP software, production workflows, and collaborative development in a flagship
+LHC experiment, while delivering practical improvements with direct impact on simulation and
+analysis.
+mentors:
+  - Brij Kishor Jashal (Rutherford Appleton Laboratory, Oxford)
+proposal: /assets/pdf/fellows-2026/UKR005-proposal-Bohdan-Wynnyckyj.pdf
+presentations:
+current_status:
+github-username: bwynnyck
+linkedin-profile:
+---
+```