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 <[email protected]>

* 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 <[email protected]>

* 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 <[email protected]>

* 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 <[email protected]>

* 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 <[email protected]>

* 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 <[email protected]>

* 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 <[email protected]>

* 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 <[email protected]>

* 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 <[email protected]>

---------

Co-authored-by: Cursor Agent <[email protected]>
Co-authored-by: morluto <[email protected]>

src/application/javascript/JavaScriptArtifactReconstruction.ts

@@ -343,8 +343,9 @@ export const reconstructJavaScriptArtifact = async (
 const OPERATION = "analyze_javascript_application";
 
 /**
- * Resolve the caller-selected input. A missing or unreadable selection is a
- * caller or host-permission failure, not a damaged artifact.
+ * Resolve the caller-selected input. A missing, looping, overlong, or
+ * unreadable selection is a caller or host-resolution failure, not a damaged
+ * artifact.
  */
 const resolveSelectedInput = async (inputPath: string): Promise<string> => {
   try {
@@ -366,10 +367,26 @@ const resolveSelectedInput = async (inputPath: string): Promise<string> => {
           message: `No file or directory exists at the selected input path (${code}): ${inputPath}`,
         },
       ]);
+    if (code === "ELOOP" || code === "ENAMETOOLONG")
+      throw new AnalysisInputError(OPERATION, { cause }, [
+        {
+          path: ["input_path"],
+          reason: "invalid_value",
+          message: selectedInputResolutionMessage(code, inputPath),
+        },
+      ]);
     throw cause;
   }
 };
 
+const selectedInputResolutionMessage = (
+  code: "ELOOP" | "ENAMETOOLONG",
+  inputPath: string,
+): string =>
+  code === "ENAMETOOLONG"
+    ? `Selected input path exceeds the host path or component length limit (ENAMETOOLONG): ${inputPath}`
+    : `Selected input path could not be resolved because symbolic-link traversal looped or exceeded the host limit (ELOOP): ${inputPath}`;
+
 /** The selected input's kind, checked against the caller's requested format. */
 const resolveFormat = async (
   path: string,