add mentions

app/routes/api.py

@@ -41,7 +41,7 @@ def babycode_preview():
     if not markup or not isinstance(markup, str):
         return {'error': 'markup field missing or invalid type'}, 400
     banned_tags = request.json.get('banned_tags', [])
-    rendered = babycode_to_html(markup, banned_tags)
+    rendered = babycode_to_html(markup, banned_tags).result
     return {'html': rendered}
 
 
@@ -213,3 +213,16 @@ def bookmark_thread(thread_id):
         return {'error': 'bad request'}, 400
 
     return {'status': 'ok'}, 200
+
+@bp.get('/current-user')
+def get_current_user_info():
+    if not is_logged_in():
+        return {'user': null}
+
+    user = get_active_user()
+    return {
+            'user': {
+                'username': user.username,
+                'display_name': user.display_name,
+            }
+        }