feat: get full evaluation back online

Very hacky, but this is enough to be finished with the graph IR for now.

crates/ir/src/id.rs

@@ -49,7 +49,7 @@ impl Input {
 ///
 /// In contrast to [`Input`]s, [`Output`]s may be used or unused.
 #[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
-pub struct Output(pub(super) Socket);
+pub struct Output(pub Socket); // TODO: Restrict publicness to super
 
 impl Output {
     #[must_use]
@@ -75,7 +75,7 @@ pub struct Socket {
 /// This really only serves for denoting where a socket is,
 /// when it's already clear which instruction is referred to.
 #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
-pub struct SocketIdx(pub u16);
+pub struct SocketIdx(pub u16); // TODO: Restrict publicness to super
 
 impl fmt::Debug for SocketIdx {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {