Add multilingual language and systems learning tracks

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+<!doctype html><html lang="en"><meta charset="utf-8"><title>Trace initialization honestly</title><h1>Trace initialization honestly</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>Kernel.Start calls CPU, Memory, Console, Interrupt, Timer, and Scheduler initialization. Several bodies currently contain null. The subsequent initialized messages do not prove those subsystems exist. Trace each call into its body and classify it as implemented behavior, host-backed behavior, or a stub.</p><p><strong>Practice and evidence:</strong> Create an evidence table with file, procedure, observable behavior, and one test still needed. Console currently uses Ada.Text_IO, which relies on the host runtime.</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://git.agilaos.com/matt/open_kernel">Language reference: git.agilaos.com</a></p><p><a href="https://git.agilaos.com/matt/agila_open_tool">Language reference: git.agilaos.com</a></p></html>