Foro: paginación en la búsqueda y contador de visitas por tema

- búsqueda paginada (count_search_topics + offset/limit) con controles en la plantilla
- contador de visitas: columna opcional forum_topics.views con detección automática
  (has_views_column), increment_views al ver el tema, mostrado en lista y cabecera
- sql/forum_views.sql (ALTER opcional) + docs

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

forum/views.py

@@ -87,14 +87,22 @@ def view_forum(request, forum_id, page=1):
 
 def search(request):
     query = (request.GET.get('q') or '').strip()
+    try:
+        page = int(request.GET.get('page', 1))
+    except (TypeError, ValueError):
+        page = 1
     results = []
+    pag = None
     if len(query) >= 2:
-        results = db.search_topics(query)
+        total = db.count_search_topics(query)
+        pag, offset = _paginate(total, page, settings.FORUM_TOPICS_PER_PAGE)
+        results = db.search_topics(query, offset, settings.FORUM_TOPICS_PER_PAGE)
         for r in results:
             r['display_poster'] = db.get_display_name(r['poster_id']) or r['poster']
     return render(request, 'forum/search.html', _base_context(request, {
         'query': query,
         'results': results,
+        'pagination': pag,
     }))
 
 
@@ -106,6 +114,11 @@ def view_topic(request, topic_id, page=1):
 
     forum = db.get_forum(topic['forum_id'], include_hidden=True)
 
+    # Contador de visitas (si la columna existe)
+    db.increment_views(topic_id)
+    if topic.get('views') is not None:
+        topic['views'] = topic['views'] + 1
+
     total = db.count_posts(topic_id)
     pag, offset = _paginate(total, page, settings.FORUM_POSTS_PER_PAGE)
     include_deleted = perm.is_moderator(request)