structural refactor and codebase improvements

crates/adapters/postgres-social/src/social.rs

@@ -0,0 +1,21 @@
+use async_trait::async_trait;
+use domain::{errors::DomainError, models::RemoteActorInfo, ports::FederationAdminQuery};
+
+use super::PostgresSocialRepository;
+
+#[async_trait]
+impl FederationAdminQuery for PostgresSocialRepository {
+    async fn list_all_followed_remote_actors(&self) -> Result<Vec<RemoteActorInfo>, DomainError> {
+        let rows = sqlx::query_as::<_, (String, String, Option<String>)>(
+            "SELECT DISTINCT ar.url, ar.handle, ar.display_name FROM ap_remote_actors ar JOIN ap_following f ON f.remote_actor_url = ar.url WHERE f.status = 'accepted'",
+        ).fetch_all(&self.pool).await.map_err(|e| DomainError::InfrastructureError(e.to_string()))?;
+        Ok(rows
+            .into_iter()
+            .map(|(url, handle, display_name)| RemoteActorInfo {
+                url,
+                handle,
+                display_name,
+            })
+            .collect())
+    }
+}