Add remote models feature flag (#7648)

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codex-rs/codex-api/tests/models_integration.rs

@@ -10,6 +10,7 @@ use codex_protocol::openai_models::ModelInfo;
 use codex_protocol::openai_models::ModelVisibility;
 use codex_protocol::openai_models::ModelsResponse;
 use codex_protocol::openai_models::ReasoningEffort;
+use codex_protocol::openai_models::ReasoningEffortPreset;
 use http::HeaderMap;
 use http::Method;
 use wiremock::Mock;
@@ -57,15 +58,25 @@ async fn models_client_hits_models_endpoint() {
             description: Some("desc".to_string()),
             default_reasoning_level: ReasoningEffort::Medium,
             supported_reasoning_levels: vec![
-                ReasoningEffort::Low,
-                ReasoningEffort::Medium,
-                ReasoningEffort::High,
+                ReasoningEffortPreset {
+                    effort: ReasoningEffort::Low,
+                    description: ReasoningEffort::Low.to_string(),
+                },
+                ReasoningEffortPreset {
+                    effort: ReasoningEffort::Medium,
+                    description: ReasoningEffort::Medium.to_string(),
+                },
+                ReasoningEffortPreset {
+                    effort: ReasoningEffort::High,
+                    description: ReasoningEffort::High.to_string(),
+                },
             ],
             shell_type: ConfigShellToolType::ShellCommand,
             visibility: ModelVisibility::List,
             minimal_client_version: ClientVersion(0, 1, 0),
             supported_in_api: true,
             priority: 1,
+            upgrade: None,
         }],
     };