fix: profile shows only own reviews, federation display name in community

- diary API accepts user_id filter, profile page passes it
- movie social feed joins ap_remote_actors for handle resolution
- COALESCE prefers actor handle for remote reviews, email for local

crates/presentation/src/forms.rs

@@ -265,7 +265,7 @@ pub fn to_diary_query(p: DiaryQueryParams) -> GetDiaryQuery {
             _ => SortDirection::Descending,
         }),
         movie_id: p.movie_id,
-        user_id: None,
+        user_id: p.user_id,
     }
 }