Require models refresh on cli version mismatch (#10414)

codex-rs/app-server/tests/common/models_cache.rs

@@ -75,9 +75,11 @@ pub fn write_models_cache_with_models(
     let cache_path = codex_home.join("models_cache.json");
     // DateTime<Utc> serializes to RFC3339 format by default with serde
     let fetched_at: DateTime<Utc> = Utc::now();
+    let client_version = codex_core::models_manager::client_version_to_whole();
     let cache = json!({
         "fetched_at": fetched_at,
         "etag": null,
+        "client_version": client_version,
         "models": models
     });
     std::fs::write(cache_path, serde_json::to_string_pretty(&cache)?)