fix(codex): use actual CODEX_HOME in auth detail message

Show the configured CODEX_HOME path instead of hardcoded ~/.codex
when the email fallback message is displayed.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/adapters/codex-local/src/server/test.ts

@@ -116,7 +116,7 @@ export async function testEnvironment(
         code: "codex_native_auth_present",
         level: "info",
         message: "Codex is authenticated via its own auth configuration.",
-        detail: codexAuth.email ? `Logged in as ${codexAuth.email}.` : "Credentials found in ~/.codex/auth.json.",
+        detail: codexAuth.email ? `Logged in as ${codexAuth.email}.` : `Credentials found in ${codexHome ?? "~/.codex"}/auth.json.`,
       });
     } else {
       checks.push({