fix: use derive(Default) for Scope enum

Author: pszymkowiak

crates/icm-core/src/memory.rs

@@ -53,23 +53,18 @@ impl Memory {
 }
 
 /// Memory scope for cloud sync.
-#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Default, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(rename_all = "lowercase")]
 pub enum Scope {
     /// Personal memories (local only, default).
+    #[default]
     User,
     /// Shared within a project (synced to cloud).
     Project,
     /// Shared across the entire organization (synced to cloud).
     Org,
 }
 
-impl Default for Scope {
-    fn default() -> Self {
-        Self::User
-    }
-}
-
 impl fmt::Display for Scope {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {