Expand taste profile: show up to 60 tags with score bars

Top 10 shown as variable-size tag cloud, all tags below as a
two-column bar chart. Backend limit raised from 20 to 60.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/routers/stats.py

@@ -114,7 +114,7 @@ def get_stats(
             SELECT tag, score FROM user_tag_affinity
             WHERE user_id = :uid AND score > 0
             ORDER BY score DESC
-            LIMIT 20
+            LIMIT 60
         """),
         {"uid": uid},
     ).mappings().all()