fix: improve plain text whitespace collapsing and prevent HTML escaping in raw content

- Use (\s*\n){3,} regex to properly collapse whitespace-mixed blank lines
- Add safeHTML pipe to preserve HTML tags in RawContent output

Author: solarhell

assets/js/copy-to-llm.js

@@ -58,7 +58,7 @@
       }
     });
 
-    return clone.textContent.replace(/\n{3,}/g, '\n\n').trim();
+    return clone.textContent.replace(/(\s*\n){3,}/g, '\n\n').trim();
   }
 
   function copyContent(type) {

layouts/partials/copy-to-llm.html

@@ -24,4 +24,4 @@
 </div>
 
 {{/* Embed raw markdown for copy-as-markdown */}}
-<script id="copy-fulltext-markdown" type="text/plain">{{ .RawContent }}</script>
+<script id="copy-fulltext-markdown" type="text/plain">{{ .RawContent | safeHTML }}</script>