Add multilingual Agila learning examples and Git practice guide

en/ai-review-and-contribute/README.md

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+# An Agila Forge review packet
+
+Take one Ada or Flying V project from these tracks and prepare a focused repository contribution that you can reproduce and test independently.
+
+- Include a README with problem, prerequisites, exact commands, and limitations.
+- Submit source and independent normal/boundary/failure evidence.
+- Review the diff and explain every retained change.
+- Document AI assistance and verification you performed yourself.
+- Record automated feedback, revisions, final check results, and a next learning objective.