fix(extractor): add case 'class' to walk path and use kind 'method' for static blocks (#1389)

The merge conflict resolution in 8d5ba14 dropped two changes from ca3123f:
1. The 'class' case in walkJavaScriptNode's switch — class expressions like
   'return class Child extends Parent { ... }' were never dispatched to
   handleClassDecl, so ctx.classes remained empty and no extends relationship
   was recorded.
2. handleStaticBlock used kind: 'function' instead of kind: 'method', so the
   CHA parents map could not walk up to the parent class for super.method()
   resolution. Also update the existing test that asserted kind: 'function'.

Author: carlos-alm

src/extractors/javascript.ts

@@ -734,6 +734,8 @@ function walkJavaScriptNode(node: TreeSitterNode, ctx: ExtractorOutput): void {
       break;
     case 'class_declaration':
     case 'abstract_class_declaration':
+    // class expressions: `return class Foo extends Bar { ... }` or `const X = class Foo { ... }`
+    case 'class':
       handleClassDecl(node, ctx);
       break;
     case 'method_definition':
@@ -874,7 +876,7 @@ function handleStaticBlock(node: TreeSitterNode, definitions: Definition[]): voi
   if (!className) return;
   definitions.push({
     name: `${className}.<static>`,
-    kind: 'function',
+    kind: 'method',
     line: nodeStartLine(node),
     endLine: nodeEndLine(node),
   });

tests/parsers/javascript.test.ts

@@ -105,12 +105,12 @@ describe('JavaScript parser', () => {
     );
   });
 
-  it('extracts static blocks as function definitions', () => {
+  it('extracts static blocks as method definitions', () => {
     const symbols = parseJS(`class C6 { static { f1(); } static { f2(); } }`);
     const staticDefs = symbols.definitions.filter((d) => d.name === 'C6.<static>');
     expect(staticDefs).toHaveLength(2);
-    expect(staticDefs[0]).toMatchObject({ kind: 'function' });
-    expect(staticDefs[1]).toMatchObject({ kind: 'function' });
+    expect(staticDefs[0]).toMatchObject({ kind: 'method' });
+    expect(staticDefs[1]).toMatchObject({ kind: 'method' });
   });
 
   it('extracts import statements', () => {