fix(users): return camelCase from GET /users list — UserSummary was snake_case

crates/presentation/src/handlers/users.rs

@@ -148,12 +148,14 @@ pub async fn get_users(
             serde_json::json!({
                 "id": u.id.as_uuid(),
                 "username": u.username,
-                "display_name": u.display_name,
-                "avatar_url": u.avatar_url,
+                "displayName": u.display_name,
+                "avatarUrl": u.avatar_url,
                 "bio": u.bio,
-                "thought_count": u.thought_count,
-                "follower_count": u.follower_count,
-                "following_count": u.following_count,
+                "headerUrl": null,
+                "customCss": null,
+                "local": true,
+                "isFollowedByViewer": false,
+                "joinedAt": null,
             })
         })
         .collect();