added rust api to control DESI data distribution; updated to utilize bun for renovate

api/src/routes/catalogs.rs

@@ -0,0 +1,54 @@
+use axum::{
+    extract::Query,
+    http::StatusCode,
+    response::{IntoResponse, Response},
+    Json,
+};
+use serde::Deserialize;
+use std::sync::LazyLock;
+
+use crate::models::{Catalog, CatalogObject};
+
+/// Placeholder catalogs until real DESI EDR/DR1 ingestion lands.
+static CATALOGS: LazyLock<Vec<Catalog>> = LazyLock::new(|| {
+    vec![
+        Catalog {
+            name: "edr".to_string(),
+            release: "EDR".to_string(),
+            description: "DESI Early Data Release",
+            object_count: None,
+        },
+        Catalog {
+            name: "dr1".to_string(),
+            release: "DR1".to_string(),
+            description: "DESI Data Release 1",
+            object_count: None,
+        },
+    ]
+});
+
+pub async fn list_catalogs() -> Json<Vec<Catalog>> {
+    Json(CATALOGS.clone())
+}
+
+#[derive(Debug, Deserialize)]
+pub struct ObjectQuery {
+    catalog: Option<String>,
+    #[serde(default)]
+    limit: Option<usize>,
+}
+
+/// Placeholder object query. Real implementation will page through the
+/// centralized DESI catalog store rather than return an empty result set.
+pub async fn list_objects(Query(query): Query<ObjectQuery>) -> Response {
+    let limit = query.limit.unwrap_or(100).min(10_000);
+
+    tracing::debug!(
+        %limit,
+        catalog = query.catalog.as_deref().unwrap_or("all"),
+        "querying catalog objects (placeholder)"
+    );
+
+    let objects: Vec<CatalogObject> = Vec::new();
+    (StatusCode::OK, Json(objects)).into_response()
+}