Add slide deck for Jfokus

Author: hannotify

.gitmodules

@@ -102,3 +102,6 @@
 [submodule "_slides/javas-concurrency-journey-continues/devoxx-ma-2025"]
 	path = _slides/javas-concurrency-journey-continues/devoxx-ma-2025
 	url = https://github.com/hannotify/javas-concurrency-journey-continues
+[submodule "_slides/javas-concurrency-journey-continues/jfokus-2026"]
+	path = _slides/javas-concurrency-journey-continues/jfokus-2026
+	url = https://github.com/hannotify/javas-concurrency-journey-continues

_data/events.yml

@@ -86,6 +86,8 @@
     - id: javas-concurrency-journey-continues
       sessionPageUrl: https://jfokus.se/schedule.html
       githubUrl: https://github.com/hannotify/structured-concurrency-bar
+      slides:
+        source: local
     - id: these-songs-would-make-some-great-code-comments
       sessionPageUrl: https://jfokus.se/schedule.html