fix: add identity_uuid to /identities list + /file/:uuid/identities responses

src/api/identity_api.rs

@@ -180,6 +180,7 @@ pub struct FileIdentitiesResponse {
 #[derive(Debug, Serialize)]
 pub struct FileIdentityItem {
     pub identity_id: i32,
+    pub identity_uuid: Option<String>,
     pub name: String,
     pub metadata: serde_json::Value,
     pub face_count: Option<i32>,
@@ -211,6 +212,7 @@ async fn get_file_identities(
         .into_iter()
         .map(|r| FileIdentityItem {
             identity_id: r.identity_id,
+            identity_uuid: r.identity_uuid.map(|u| u.to_string()),
             name: r.name,
             metadata: r.metadata,
             face_count: r.face_count,