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 <noreply@anthropic.com>

contents/html/applet_lambda_und_f.html

@@ -3,17 +3,17 @@
 <html>
     <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>
-    <p>Hier gibt es die Möglichkeit das Ganze nochmal auszuprobieren. An dem Regler kann man die Wellenlänge $\lambda$ einstellen. Die Frequenz wird automatisch berechnet.</p>
+    <p>Här kan du prova det hela en gång till. Med reglaget ställer du in våglängden $\lambda$. Frekvensen beräknas automatiskt.</p>
     <table>
         <tr>
             <td>
-                Periode:
+                Period:
             </td>
             <td>
                 <input type="range" class="slider" value="69" min="50" max="1000" id="period">
             </td>
             <td>
-                $\lambda$=<div id="twl" style="display:inline-block;">1s</div> und $f$=<div id="tfrequency" style="display:inline-block;">1Hz</div>
+                $\lambda$=<div id="twl" style="display:inline-block;">1s</div> och $f$=<div id="tfrequency" style="display:inline-block;">1Hz</div>
           </td>
         </tr>
     </table>
@@ -63,7 +63,7 @@
                         max: 10,
                         title: {
                             display: true,
-                            text: 'Abstand'
+                            text: 'Avstånd'
                         },
                         ticks: {
                             stepSize: 1,
@@ -105,7 +105,7 @@
 
             // Set Text:
             $('#twl').html(lambda+"m");
-            $('#tfrequency').html((299.792458/lambda).toFixed(2)+" MHz"); 
+            $('#tfrequency').html((299.792458/lambda).toFixed(2).replace(".", ",")+" MHz"); 
         }
     </script>
 </html>