fix(agentrouter): support Claude and Codex protocols

src/shared/constants/codexClient.ts

@@ -0,0 +1,11 @@
+export const DEFAULT_CODEX_CLIENT_VERSION = "0.146.0";
+export const CODEX_CLI_RS_ORIGINATOR = "codex_cli_rs";
+
+export function getCodexCliRsHeaders(
+  version = DEFAULT_CODEX_CLIENT_VERSION
+): Record<string, string> {
+  return {
+    "User-Agent": `${CODEX_CLI_RS_ORIGINATOR}/${version}`,
+    originator: CODEX_CLI_RS_ORIGINATOR,
+  };
+}