From 38ecc61beb0b0f770ac00fd41cf6880abdfe29e6 Mon Sep 17 00:00:00 2001
From: Roy Han <rhan@openai.com>
Date: Mon, 16 Mar 2026 11:39:26 -0700
Subject: [PATCH] core: remove metadata legacy alias and keep canonical
 item_metadata

---
 codex-rs/core/src/features/legacy.rs | 4 ----
 codex-rs/core/src/features_tests.rs  | 6 ------
 2 files changed, 10 deletions(-)

diff --git a/codex-rs/core/src/features/legacy.rs b/codex-rs/core/src/features/legacy.rs
index 310e64a779..48e19c0df9 100644
--- a/codex-rs/core/src/features/legacy.rs
+++ b/codex-rs/core/src/features/legacy.rs
@@ -45,10 +45,6 @@ const ALIASES: &[Alias] = &[
         legacy_key: "memory_tool",
         feature: Feature::MemoryTool,
     },
-    Alias {
-        legacy_key: "user_message_type_metadata",
-        feature: Feature::ItemMetadata,
-    },
 ];
 
 pub(crate) fn legacy_feature_keys() -> impl Iterator<Item = &'static str> {
diff --git a/codex-rs/core/src/features_tests.rs b/codex-rs/core/src/features_tests.rs
index 46c0998ed3..336e0c142f 100644
--- a/codex-rs/core/src/features_tests.rs
+++ b/codex-rs/core/src/features_tests.rs
@@ -142,12 +142,6 @@ fn collab_is_legacy_alias_for_multi_agent() {
     assert_eq!(feature_for_key("collab"), Some(Feature::Collab));
 }
 
-#[test]
-fn user_message_type_metadata_is_legacy_alias_for_item_metadata() {
-    assert_eq!(feature_for_key("user_message_type_metadata"), Some(Feature::ItemMetadata));
-    assert_eq!(feature_for_key("item_metadata"), Some(Feature::ItemMetadata));
-}
-
 #[test]
 fn item_metadata_is_under_development_and_disabled_by_default() {
     assert_eq!(Feature::ItemMetadata.stage(), Stage::UnderDevelopment);