fix: important information now displays correctly on event details

Fixed HTML parser to strip <style> and <script> blocks entirely
(including their content) before extracting text. Previously, CSS
rules like "td {border: 1px solid...}" leaked into the parsed output.
Also added </div>, </p>, </li> as newline separators so div-wrapped
content (common in Django admin rich text) parses into separate items.
Added debug logging to _loadFullDetails for troubleshooting.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lib/screens/learn_more_screen.dart

@@ -85,8 +85,9 @@ class _LearnMoreScreenState extends State<LearnMoreScreen> {
         _event = ev;
       });
       _startAutoScroll();
-    } catch (_) {
+    } catch (e) {
-      // Silently fail — the pre-loaded data is already displayed
+      // Log for debugging, but don't show error — the pre-loaded data is displayed
+      debugPrint('_loadFullDetails failed for event ${widget.eventId}: $e');
     }
   }
 
@@ -1221,11 +1222,20 @@ class _LearnMoreScreenState extends State<LearnMoreScreen> {
 
   /// Parse an HTML important_information string into a list of {title, value} maps
   List<Map<String, String>> _parseHtmlImportantInfo(String raw) {
-    // Strip HTML tags, preserving <br> as a newline separator first
+    var text = raw;
-    var text = raw
+    // 1. Remove <style>...</style> blocks entirely (content + tags)
-        .replaceAll(RegExp(r'<br\s*/?>', caseSensitive: false), '\n')
+    text = text.replaceAll(RegExp(r'<style[^>]*>.*?</style>', caseSensitive: false, dotAll: true), '');
-        .replaceAll(RegExp(r'<[^>]*>'), '');
+    // 2. Remove <script>...</script> blocks
-    // Decode entities
+    text = text.replaceAll(RegExp(r'<script[^>]*>.*?</script>', caseSensitive: false, dotAll: true), '');
+    // 3. Convert block-level closers to newlines
+    text = text.replaceAll(RegExp(r'</div>', caseSensitive: false), '\n');
+    text = text.replaceAll(RegExp(r'</p>', caseSensitive: false), '\n');
+    text = text.replaceAll(RegExp(r'</li>', caseSensitive: false), '\n');
+    // 4. Convert <br> to newlines
+    text = text.replaceAll(RegExp(r'<br\s*/?>', caseSensitive: false), '\n');
+    // 5. Strip all remaining HTML tags
+    text = text.replaceAll(RegExp(r'<[^>]*>'), '');
+    // 6. Decode HTML entities
     text = text
         .replaceAll('&amp;', '&')
         .replaceAll('&lt;', '<')