Add multilingual language and systems learning tracks

ceb/expanded-8-2/lesson-1/lesson.html

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+<!doctype html><html lang="ceb"><meta charset="utf-8"><title>I-validate ang input ug butangi og label ang control</title><h1>I-validate ang input ug butangi og label ang control</h1><p>15-minutong sesyon: pagbasa sulod sa 3 minutos, pag-trace sa 3, pag-eksperimento sa 7, ug pagtubag sa check sa 2. Paggahin og dugang oras kon gikinahanglan.</p><p>Ang makita nga label nagpasabot sa input. Ang for attribute nagdugtong niini sa id. Sulayi ang empty, 0, 1, 60, 61, ug 1.5. Makatabang ang HTML constraint apan kinahanglan mag-validate pag-usab ang server kay mahimong usbon ang browser request. Walay data nga isumite sa server kining preview.</p><pre><code class="language-web">&lt;!doctype html&gt;
+&lt;html lang=&quot;en&quot;&gt;&lt;meta charset=&quot;utf-8&quot;&gt;&lt;meta name=&quot;viewport&quot; content=&quot;width=device-width,initial-scale=1&quot;&gt;
+&lt;title&gt;Agila study&lt;/title&gt;
+&lt;main&gt;&lt;h1&gt;Study time&lt;/h1&gt;&lt;label for=&quot;minutes&quot;&gt;Minutes (1–60)&lt;/label&gt;&lt;input id=&quot;minutes&quot; type=&quot;number&quot; min=&quot;1&quot; max=&quot;60&quot;&gt;&lt;button id=&quot;check&quot;&gt;Check&lt;/button&gt;&lt;p id=&quot;result&quot; role=&quot;status&quot;&gt;&lt;/p&gt;&lt;/main&gt;
+&lt;script&gt;document.getElementById(&quot;check&quot;).onclick=()=&gt;{const raw=document.getElementById(&quot;minutes&quot;).value;const n=Number(raw);document.getElementById(&quot;result&quot;).textContent=raw.trim()!==&quot;&quot;&amp;&amp;Number.isInteger(n)&amp;&amp;n&gt;=1&amp;&amp;n&lt;=60?&quot;Ready&quot;:&quot;Use a whole number from 1 to 60&quot;;};&lt;/script&gt;&lt;/html&gt;</code></pre><h3>Praktis ug ebidensiya</h3><p>Isulat ang tagna, aktuwal nga resulta, ug hinungdan sa pagkapareho o kalainan. Ang completion check mosukod sa pagsabot; ang practice task mopauswag sa kahanas.</p></html>

ceb/expanded-8-2/lesson-1/main.html

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+<!doctype html>
+<html lang="en"><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1">
+<title>Agila study</title>
+<main><h1>Study time</h1><label for="minutes">Minutes (1–60)</label><input id="minutes" type="number" min="1" max="60"><button id="check">Check</button><p id="result" role="status"></p></main>
+<script>document.getElementById("check").onclick=()=>{const raw=document.getElementById("minutes").value;const n=Number(raw);document.getElementById("result").textContent=raw.trim()!==""&&Number.isInteger(n)&&n>=1&&n<=60?"Ready":"Use a whole number from 1 to 60";};</script></html>