diff --git a/server/lib/pty-run.js b/server/lib/pty-run.js
index a173ec15..ec62d31c 100644
--- a/server/lib/pty-run.js
+++ b/server/lib/pty-run.js
@@ -43,7 +43,6 @@ const CODEX_SANDBOXES = new Set(["read-only", "workspace-write", "danger-full-ac
 const CODEX_APPROVALS = new Set(["on-request", "never"]);
 // Codex has no `--effort` flag; reasoning effort is a config override.
 const CODEX_EFFORTS = new Set(["low", "medium", "high", "xhigh"]);
-const CODEX_SESSION_RE = /^[0-9a-fA-F-]{8,}$/;
 
 function runIdForLane(laneId) {
   return `ccam-lane-${laneId}`;