Refactor: Rename map to record

This commit renames `Map` to `Record` and updates all related AST nodes,
binders, type checkers, and runtime values to reflect this change. This
is a semantic change to better align with common programming language
terminology.

src/ast/compiler/bound_nodes.rs

@@ -98,8 +98,8 @@ pub enum BoundKind<T = ()> {
         elements: Vec<BoundNode<T>>,
     },
 
-    Map {
-        entries: Vec<MapEntry<T>>,
+    Record {
+        fields: Vec<RecordField<T>>,
     },
 
     /// An expanded macro call, preserving the original call for debugging and UI.
@@ -114,8 +114,8 @@ pub enum BoundKind<T = ()> {
     Extension(Box<dyn BoundExtension<T>>),
 }
 
-/// A single entry in a Map literal (Key-Value pair)
-pub type MapEntry<T> = (BoundNode<T>, BoundNode<T>);
+/// A single field in a Record literal (Key-Value pair)
+pub type RecordField<T> = (BoundNode<T>, BoundNode<T>);
 
 impl<T> BoundKind<T> {
     pub fn display_name(&self) -> String {
@@ -139,7 +139,7 @@ impl<T> BoundKind<T> {
             BoundKind::TailCall { .. } => "T-CALL".to_string(),
             BoundKind::Block { .. } => "BLOCK".to_string(),
             BoundKind::Tuple { elements } => format!("TUPLE({})", elements.len()),
-            BoundKind::Map { entries } => format!("MAP({})", entries.len()),
+            BoundKind::Record { fields } => format!("RECORD({})", fields.len()),
             BoundKind::Expansion { .. } => "EXPANSION".to_string(),
             BoundKind::Extension(ext) => ext.display_name(),
         }