chore: exp flag (#17921)

codex-rs/features/src/lib.rs

@@ -672,7 +672,11 @@ pub const FEATURES: &[FeatureSpec] = &[
     FeatureSpec {
         id: Feature::MemoryTool,
         key: "memories",
-        stage: Stage::UnderDevelopment,
+        stage: Stage::Experimental {
+            name: "Memories",
+            menu_description: "Allow Codex to create new memories from conversations and bring relevant memories into new conversations.",
+            announcement: "NEW: Codex can now generate and uses memories. Try is now with `/memories`",
+        },
         default_enabled: false,
     },
     FeatureSpec {