Add multilingual language and systems learning tracks

en/objectivec-foundations-20261101/README.md

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+# Objective-C — first steps
+
+[Agila University track](https://edu.agilaos.com/track.php?track=15&lang=en)
+
+About 15 minutes per lesson. Predict, run, change, explain, then complete the check in University.
+
+- [Lesson 1: Your first explainable program](lesson-1/lesson.html)
+- [Lesson 2: Values and decisions](lesson-2/lesson.html)
+- [Lesson 3: Functions and a clear policy](lesson-3/lesson.html)