Claude Code has a mechanism for "parking" a permission request (asking whether a tool can run) and later matching it up with the answer that comes back. A new, more conservative matching path called routeStrictAnswer has been added for this. It carefully re-checks the request ID, the specific tool call ID, the tool name, and that the tool call is still the most recent one before accepting an answer, rejecting mismatches for reasons like not_the_park, decided, tool_name_mismatch, or not_queued. This new path only runs when an internal setting is set to "strict", and nothing in this change actually turns that setting on.
This is groundwork for tighter, less error-prone matching of permission answers to the right tool call, guarding against stale or mismatched approvals slipping through. Since nothing currently selects the "strict" mode, it has no visible effect yet.