fix(javascript): retain standalone GraphQL source operations

Retain named operations in GraphQL Source bodies with locationOffset metadata.
Use final property ownership and parsed lexical facts to suppress copies only
when a recovered document, its containers and source aliases have proven
private metadata ownership. Preserve independent observations after writes,
exports, opaque uses, classic-script global exposure or direct evaluation.

Share interpretation across application and captured-web analysis. Build
optional reference indexes once per source and checkpoint examined records,
including suppressed findings, to retain cooperative cancellation.

Fixes #3311

Co-authored-by: Kaoru0822 <208281322+kaoru0822-kitauji@users.noreply.github.com>
Co-authored-by: gensokyo-dev <342580529+gensokyo-dev@users.noreply.github.com>

src/domain/javascript/javascriptAstValues.ts

@@ -98,6 +98,30 @@ export const semanticStaticPropertyKey = (
   return !computed && t.isIdentifier(property) ? property.name : null;
 };
 
+/** Later properties own a key; an intervening dynamic write leaves it unknown. */
+export const semanticFinalObjectProperty = (
+  node: t.ObjectExpression,
+  key: string,
+): t.Node | undefined => {
+  for (let index = node.properties.length - 1; index >= 0; index -= 1) {
+    const property = node.properties[index];
+    if (property === undefined || t.isSpreadElement(property)) return undefined;
+    const name = semanticStaticPropertyKey(property.key, property.computed);
+    if (name === null) return undefined;
+    if (name === key)
+      return t.isObjectProperty(property) ? property.value : undefined;
+  }
+  return undefined;
+};
+
+export const semanticFinalObjectStringProperty = (
+  node: t.ObjectExpression,
+  key: string,
+): string | undefined => {
+  const value = semanticFinalObjectProperty(node, key);
+  return t.isStringLiteral(value) ? value.value : undefined;
+};
+
 /** Read exact consumed object-pattern keys, leaving dynamic keys unknown. */
 export const semanticObjectPatternKeys = (
   pattern: t.ObjectPattern,