Swedish adaptation: Instegscertifikat and HAREC

- Editions replaced by INSTEG, HAREC and UPPGRADERING (Instegscertifikat -> HAREC)
- Question pool optional; simulator, homework tool and solutions switch off without one
- All UI strings, templates, renderers and project JS localised to sv-SE
  (decimal comma, Swedish non-breaking-space rules, Å/Ä/Ö in Morse table)
- DARC branding, membership CTA and German links removed; attribution footer added
- Page names centralised in src/pages.py
- README and docs rewritten in Swedish

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

assets/latex.js

@@ -37,14 +37,14 @@ document.addEventListener("DOMContentLoaded", function() {
             s = s.slice(1);
         }
 
-        // Find decimal point (last . or ,)
+        // Find decimal separator (last . or ,). Swedish convention: always a decimal comma.
         let intPart = s;
         let fracSep = "";
         let fracDigits = "";
         const decMatch = s.match(/([.,])(\d+)$/);
         if (decMatch) {
             intPart = s.slice(0, decMatch.index);
-            fracSep = decMatch[1];
+            fracSep = ",";
             fracDigits = decMatch[2];
         }
 
@@ -105,6 +105,7 @@ document.addEventListener("DOMContentLoaded", function() {
         "\\mega": "\\text{M}",
         "\\kilo": "\\text{k}",
         "\\dezi": "\\text{d}",
+        "\\deci": "\\text{d}",
         "\\centi": "\\text{c}",
         "\\milli": "\\text{m}",
         "\\micro": "\\text{μ}",
@@ -144,12 +145,13 @@ document.addEventListener("DOMContentLoaded", function() {
         "\\Ohm": "\\Omega",
         "\\weber": "\\text{Wb}",
         "\\tesla": "\\text{T}",
-        "\\bit": "\\text{Bit}",
+        "\\bit": "\\text{bit}",
         "\\baud": "\\text{Bd}",
         "\\sample": "\\text{S}",
         "\\degreeCelsius": "\\,\\degree\\text{C}",
         "\\liter": "\\text{l}",
         "\\oszidiv": "\\text{div}",
+        "\\scopediv": "\\text{div}",
         "\\sps": "\\text{sps}",
     };