Add multilingual language and systems learning tracks

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+<!doctype html><html lang="en"><meta charset="utf-8"><title>A reproducible portability report</title><h1>A reproducible portability report</h1><p>15-minute session: read for 3 minutes, trace for 3, experiment for 7, and complete the check for 2. Spend longer whenever you need.</p><p>Choose one small program and two target environments. Record compiler/interpreter version, ISA, OS, input, expected result, actual result, and limitations. Distinguish compile success from a successful target execution. If only one target is available, mark the other untested. Use the official Intel, Arm, and RISC-V references linked in the course resources. Your next step is the core and memory mapping track.</p><h3>Practice and evidence</h3><p>Keep three notes: your prediction, the actual result, and why they match or differ. The completion check grades understanding; the practice task builds skill.</p><p><a href="https://www.intel.com/content/www/us/en/developer/articles/technical/intel-sdm.html">Language reference: www.intel.com</a></p><p><a href="https://developer.arm.com/Architectures/Learn%20the%20Architecture">Language reference: developer.arm.com</a></p><p><a href="https://docs.riscv.org/">Language reference: docs.riscv.org</a></p></html>