feat: chronicle alias (#18651)

Rename Telepathy to Chronicle and add an alias for backward
compatibility

codex-rs/features/src/tests.rs

@@ -241,6 +241,14 @@ fn workspace_dependencies_is_stable_and_enabled_by_default() {
     );
 }
 
+#[test]
+fn telepathy_is_legacy_alias_for_chronicle() {
+    assert_eq!(Feature::Chronicle.stage(), Stage::UnderDevelopment);
+    assert_eq!(Feature::Chronicle.default_enabled(), false);
+    assert_eq!(feature_for_key("chronicle"), Some(Feature::Chronicle));
+    assert_eq!(feature_for_key("telepathy"), Some(Feature::Chronicle));
+}
+
 #[test]
 fn collab_is_legacy_alias_for_multi_agent() {
     assert_eq!(feature_for_key("multi_agent"), Some(Feature::Collab));