UI-tests und fixes aus tests

public/js/modules/markdown.js

@@ -99,10 +99,14 @@ export function renderMd(src) {
         // Help parser: ensure a list can start after text without requiring manual blank line
         .replace(/([^\n])\n(?=(?: {0,3}[-*+]\s| {0,3}\d+\.\s))/g, '$1\n\n')
         // Preserve extra blank lines as <br> spacers (3+ newlines = 1+ extra blank lines)
-        .replace(/\n{3,}/g, m => '\n\n' + '<br>\n'.repeat(m.length - 2))
-        // Ensure hr rules have one clean blank line before and after, keep extra <br> beyond that
-        .replace(/<br>\n(---+|___+|\*\*\*+)\n/gm, '\n\n$1\n')
-        .replace(/(---+|___+|\*\*\*+)\n<br>/gm, '$1\n\n');
+        // Insert <br> BETWEEN paragraphs but not before block-level elements
+        .replace(/\n{3,}/g, m => {
+            const extra = m.length - 2;
+            return '\n\n' + '<br class="spacer">\n\n'.repeat(extra > 3 ? 3 : extra);
+        })
+        // Ensure hr rules have clean blank lines
+        .replace(/<br class="spacer">\n\n(---+|___+|\*\*\*+)/gm, '\n\n$1')
+        .replace(/(---+|___+|\*\*\*+)\n\n<br class="spacer">/gm, '$1\n\n');
 
     const linked = processed.replace(/\[\[([^\]]+)\]\]/g, (_, title) => {
         const card = state.cards.find(c => c.title.toLowerCase() === title.toLowerCase());