initial skeleton

crates/aim-core/src/app/update.rs

@@ -0,0 +1,17 @@
+use crate::domain::app::AppRecord;
+use crate::domain::update::{PlannedUpdate, UpdatePlan};
+
+pub fn build_update_plan(apps: &[AppRecord]) -> Result<UpdatePlan, BuildUpdatePlanError> {
+    Ok(UpdatePlan {
+        items: apps
+            .iter()
+            .map(|app| PlannedUpdate {
+                stable_id: app.stable_id.clone(),
+                display_name: app.display_name.clone(),
+            })
+            .collect(),
+    })
+}
+
+#[derive(Debug, Eq, PartialEq)]
+pub enum BuildUpdatePlanError {}