feat(native): extract base_list for C# classes

crates/codegraph-core/src/extractors/csharp.rs

@@ -403,7 +403,11 @@ fn extract_csharp_base_types(
     source: &[u8],
     symbols: &mut FileSymbols,
 ) {
-    let base_list = node.child_by_field_name("bases");
+    // tree-sitter-c-sharp exposes base_list as a child node type, not a field,
+    // so child_by_field_name("bases") returns None — fall back to find_child.
+    let base_list = node
+        .child_by_field_name("bases")
+        .or_else(|| find_child(node, "base_list"));
     let base_list = match base_list {
         Some(bl) => bl,
         None => return,
@@ -433,38 +437,6 @@ fn extract_csharp_base_types(
                         });
                     }
                 }
-                "base_list" => {
-                    for j in 0..child.child_count() {
-                        if let Some(base) = child.child(j) {
-                            match base.kind() {
-                                "identifier" | "qualified_name" => {
-                                    symbols.classes.push(ClassRelation {
-                                        name: class_name.to_string(),
-                                        extends: Some(node_text(&base, source).to_string()),
-                                        implements: None,
-                                        line: start_line(node),
-                                    });
-                                }
-                                "generic_name" => {
-                                    let name = base
-                                        .child_by_field_name("name")
-                                        .or_else(|| base.child(0));
-                                    if let Some(name) = name {
-                                        symbols.classes.push(ClassRelation {
-                                            name: class_name.to_string(),
-                                            extends: Some(
-                                                node_text(&name, source).to_string(),
-                                            ),
-                                            implements: None,
-                                            line: start_line(node),
-                                        });
-                                    }
-                                }
-                                _ => {}
-                            }
-                        }
-                    }
-                }
                 _ => {}
             }
         }

tests/engines/parity.test.js

@@ -226,7 +226,7 @@ class Document implements Printable {
     {
       name: 'C# — classes and using',
       file: 'Test.cs',
-      // TODO: re-enable once native engine extracts base_list into classes array
+      // Skip until next native binary release includes base_list extraction fix
       skip: true,
       code: `
 using System;