fix(javascript): preserve path reasons, module coverage, and property provenance (#5651)

* fix(javascript): preserve selected path host resolution reasons

Classify ELOOP and ENAMETOOLONG while resolving the caller-selected input so the path and host code stay on the invalid-request issue.

Refs #5623

Co-authored-by: morluto <morluto@users.noreply.github.com>

* fix(javascript): count summary coverage in module units

Use the module population for both examined and total counts. Non-module graph nodes remain in the application coverage section.

Refs #5464

Co-authored-by: morluto <morluto@users.noreply.github.com>

* fix(javascript): connect direct property reads to return and argument flow

Record the unwrapped value expression and alias the object projection's read occurrence so a direct member read stays in backward provenance.

Refs #5585, #5648

Co-authored-by: morluto <morluto@users.noreply.github.com>

* fix(javascript): count return wrappers against expression depth

Evaluate the original return expression so erased TypeScript and Flow wrappers stay inside the expression-depth budget. Keep the unwrapped node for identity and value ranges.

Co-authored-by: morluto <morluto@users.noreply.github.com>

* fix(javascript): describe ELOOP as unresolved symlink traversal

A host can return ELOOP for a cycle or for a chain past its traversal limit. Keep the selected path and code without asserting that a cycle exists.

Co-authored-by: morluto <morluto@users.noreply.github.com>

* test(javascript): skip symlink traversal fixtures on Windows

Keep the overlong-name case portable. Windows does not produce ELOOP for these fixtures, matching the other path-failure tests.

Co-authored-by: morluto <morluto@users.noreply.github.com>

* fix(javascript): describe ENAMETOOLONG as a path or component limit

realpath reports that code for a long component and for a long full path. Keep the selected path and host code without claiming only a filename was too long.

Co-authored-by: morluto <morluto@users.noreply.github.com>

* style(javascript): format return-depth and object-read changes

oxfmt rejected the return-depth test and the object-read index. No behavior change.

Co-authored-by: morluto <morluto@users.noreply.github.com>

* test(ida): expect unchanged invalid requests to be nonretryable

The shared projector no longer marks invalid_request retryable. This lookup assertion was not updated with that contract.

Co-authored-by: morluto <morluto@users.noreply.github.com>

---------

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: morluto <morluto@users.noreply.github.com>

src/domain/javascript/javascriptSemanticReturns.ts

@@ -54,6 +54,10 @@ export const collectSemanticReturns = (
     const expressions = directReturnExpressions(node);
     const sites: JavaScriptSemanticReturnSite[] = [];
     for (const expression of expressions) {
+      const returned =
+        expression.node === null
+          ? null
+          : unwrapJavaScriptExpression(expression.node).node;
       sites.push({
         returnSiteId: semanticReturnSiteId(
           callable.callableId,
@@ -61,9 +65,10 @@ export const collectSemanticReturns = (
         ),
         location: expression.location,
         identityReferenceLocation:
-          expression.node !== null && t.isIdentifier(expression.node)
-            ? range(expression.node)
+          returned !== null && t.isIdentifier(returned)
+            ? range(returned)
             : null,
+        valueExpressionLocation: returned === null ? null : range(returned),
         value:
           expression.node === null
             ? { status: "unknown", reason: "Return has no value." }