Add multilingual Agila learning examples and Git practice guide

en/ai-verify-apis/README.md

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+# An evidence-backed SDK review
+
+Review a short Flying V draft against the released SDK. Produce a supported prototype and a list of claims that need further documentation.
+
+- Check a UI field, lifecycle sequence, and graphics-output claim.
+- Record the exact source paths and SDK revision used.
+- Classify claims as supported, contradicted, or not established.
+- Run the supported prototype and compare expected with actual output.
+- Explain the sandbox boundary and keep future interactions labeled as proposals.

en/ai-verify-apis/main.fv

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+import agila
+
+fn main() {
+    agila.preview(agila.Button{label: 'Begin practice'})
+}