Swedish adaptation: Instegscertifikat and HAREC content

- Sections and slides rewritten in Swedish; German law and institutions replaced by
  Swedish/CEPT/ITU equivalents (PTS, SSA, PTSFS 2025:1, SSMFS 2008:18), unverified
  statements marked "% TODO VERIFY"
- New toc: INSTEG, HAREC, UPPGRADERING; section idents are Swedish (see ident-map.tsv)
- Exam-question tags, BNetzA question pool, solutions and the German SWL course removed
- Static pages, snippets, applets, READMEs and image alt-texts translated
- TikZ labels translated; SVG drawings regenerated (drawing 689 still fails to build
  upstream: it references a missing photo)
- Changed from the original: not endorsed by DARC e.V., SSA or PTS

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>

contents/html/applet_sinus_amplitude_und_periode.html

@@ -2,11 +2,11 @@
     <script src="https://www.50ohm.de/assets/jquery/3.7.1/jquery.min.js"></script>
     <script src="https://www.50ohm.de/assets/chartjs/4.4.1/chart.min.js"></script>
     <link rel="stylesheet" href="https://www.50ohm.de/assets/katex/katex.min.css">
-    <p>Hier gibt es die Möglichkeit das Ganze nochmal auszuprobieren. An den Reglern kann man die Amplitude $a$ und die Periode $T$ einer Sinusschwingung einstellen.</p>
+    <p>Här kan du prova det hela en gång till. Med reglagen ställer du in amplituden $a$ och perioden $T$ för en sinussvängning.</p>
     <table>
         <tr>
             <td>
-                Amplitude:
+                Amplitud:
             </td>
             <td>
                 <input type="range" class="slider" value="50" min="0" max="100" id="amplitude">
@@ -17,13 +17,13 @@
         </tr>
         <tr>
             <td>
-                Periode:
+                Period:
             </td>
             <td>
                 <input type="range" class="slider" value="1" min="1" max="10" id="period">
             </td>
             <td>
-                $T$=<div id="tperiod" style="display:inline-block;">1s</div> und $f$=<div id="tfrequency" style="display:inline-block;">1Hz</div>
+                $T$=<div id="tperiod" style="display:inline-block;">1s</div> och $f$=<div id="tfrequency" style="display:inline-block;">1Hz</div>
           </td>
         </tr>
     </table>
@@ -73,7 +73,7 @@
                         max: 24,
                         title: {
                             display: true,
-                            text: 'Zeit'
+                            text: 'Tid'
                         },
                         ticks: {
                             stepSize: 1,
@@ -116,7 +116,7 @@
             // Set Text:
             $('#tamplitude').html(a+"%"); 
             $('#tperiod').html(p+"s"); 
-            $('#tfrequency').html((1/p).toFixed(2)+" Hz"); 
+            $('#tfrequency').html((1/p).toFixed(2).replace(".", ",")+" Hz"); 
         }
     </script>
 </html>