Revert "Add use_agent_identity feature flag (#17385)"

This reverts commit 39cc85310f.

codex-rs/app-server/tests/suite/v2/account.rs

@@ -45,9 +45,7 @@ use wiremock::ResponseTemplate;
 use wiremock::matchers::method;
 use wiremock::matchers::path;
 
-// Account tests spin up fresh app-server processes repeatedly, which can take
-// longer on slower Bazel macOS runners once the suite is already warm.
-const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(20);
+const DEFAULT_READ_TIMEOUT: std::time::Duration = std::time::Duration::from_secs(10);
 const LOGIN_ISSUER_ENV_VAR: &str = "CODEX_APP_SERVER_LOGIN_ISSUER";
 
 // Helper to create a minimal config.toml for the app server

codex-rs/core/config.schema.json

@@ -521,9 +521,6 @@
             "unified_exec": {
               "type": "boolean"
             },
-            "use_agent_identity": {
-              "type": "boolean"
-            },
             "use_legacy_landlock": {
               "type": "boolean"
             },
@@ -2499,9 +2496,6 @@
         "unified_exec": {
           "type": "boolean"
         },
-        "use_agent_identity": {
-          "type": "boolean"
-        },
         "use_legacy_landlock": {
           "type": "boolean"
         },

codex-rs/exec-server/src/server/handler/tests.rs

@@ -292,8 +292,7 @@ async fn output_and_exit_are_retained_after_notification_receiver_closes() {
             process_id.as_str(),
             shell_argv(
                 "sleep 0.05; printf 'first\\n'; sleep 0.05; printf 'second\\n'",
-                // `cmd.exe` retains the space before `&&` in `echo first && ...`.
-                "(echo first) && ping -n 2 127.0.0.1 >NUL && (echo second)",
+                "echo first&& ping -n 2 127.0.0.1 >NUL&& echo second",
             ),
         ))
         .await

codex-rs/features/src/lib.rs

@@ -199,8 +199,6 @@ pub enum Feature {
     ResponsesWebsockets,
     /// Legacy rollout flag for Responses API WebSocket transport v2 experiments.
     ResponsesWebsocketsV2,
-    /// Use the agent identity registration flow for ChatGPT-authenticated sessions.
-    UseAgentIdentity,
     /// Enable workspace dependency support.
     WorkspaceDependencies,
 }
@@ -988,12 +986,6 @@ pub const FEATURES: &[FeatureSpec] = &[
         stage: Stage::Removed,
         default_enabled: false,
     },
-    FeatureSpec {
-        id: Feature::UseAgentIdentity,
-        key: "use_agent_identity",
-        stage: Stage::UnderDevelopment,
-        default_enabled: false,
-    },
     FeatureSpec {
         id: Feature::WorkspaceDependencies,
         key: "workspace_dependencies",

codex-rs/features/src/tests.rs

@@ -225,12 +225,6 @@ fn remote_control_is_under_development() {
     assert_eq!(Feature::RemoteControl.default_enabled(), false);
 }
 
-#[test]
-fn use_agent_identity_is_under_development() {
-    assert_eq!(Feature::UseAgentIdentity.stage(), Stage::UnderDevelopment);
-    assert_eq!(Feature::UseAgentIdentity.default_enabled(), false);
-}
-
 #[test]
 fn workspace_dependencies_is_stable_and_enabled_by_default() {
     assert_eq!(Feature::WorkspaceDependencies.stage(), Stage::Stable);