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

api/src/models.rs

@@ -0,0 +1,22 @@
+use serde::Serialize;
+
+/// Catalog metadata for a DESI data release/survey.
+#[derive(Debug, Clone, Serialize)]
+pub struct Catalog {
+    pub name: String,
+    pub release: String,
+    pub description: &'static str,
+    pub object_count: Option<u64>,
+}
+
+/// A single catalog object (galaxy / quasar / star) with its survey
+/// coordinates. `ra` and `dec` are in degrees; `redshift` is dimensionless.
+#[derive(Debug, Serialize)]
+pub struct CatalogObject {
+    pub id: String,
+    pub catalog: String,
+    pub object_type: String,
+    pub ra: f64,
+    pub dec: f64,
+    pub redshift: f64,
+}