fix(managed): attribute malformed comparison inputs to their arguments

Pass the caller-selected input field to the shared managed parse-failure
owner. Derive filename and field from one comparison selection, reporting
leftPath or rightPath while ordinary inspection continues to report path.
Preserve typed input classification and completed-left partial Evidence.

Replace weaker direct malformed-input cases with a compiled CLI workflow
covering both sides, the healthy comparison, and sibling inspection.
Document the input-attribution contract.

Validation: the public regression reproduced the generic path issue;
focused CLI, comparison and shared-reader controls passed after repair.
No managed assembly or external analysis provider was executed.

docs/managed-code-analysis.md

@@ -365,8 +365,9 @@ admitted digest, inspection and comparison report retryable `artifact_changed`;
 any completed hash retains the observed digest and byte count. Retry against a
 stable source. This differs from corrupted retained Evidence, which remains an
 Evidence-integrity failure. Malformed selected PE input has the same input-format
-classification in inspection and comparison, and a failed right-side comparison
-retains the completed left observation.
+classification in inspection and comparison. Its issue identifies the selected
+filename and argument: `path` for inspection, or `leftPath` / `rightPath` for CLI
+comparison. A failed right-side comparison retains the completed left observation.
 
 ## Member comparison