Add tool namespace metadata configuration (#37389)

## What changed

- Add `features.tool_registry.include_tool_namespaces_info` to the TOML model,
  generated schema, and resolved runtime configuration. The setting defaults to
  `false` and controls whether per-turn request metadata includes the resolved
  tool namespace inventory.
- Preserve the resolved setting in session configuration locks.
- Cover top-level and profile-scoped strict configuration, deserialization,
  resolution, and lock-file persistence.

GitOrigin-RevId: 74124086c0d7de30094b411001f0ec0af490935d

codex-rs/features/src/feature_configs.rs

@@ -10,6 +10,9 @@ pub struct ToolRegistryConfigToml {
     /// Fail the turn when multiple tools share the same effective name.
     #[serde(skip_serializing_if = "Option::is_none")]
     pub error_on_tool_collisions: Option<bool>,
+    /// Include the resolved tool namespace inventory in per-turn request metadata.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub include_tool_namespaces_info: Option<bool>,
 }
 
 #[derive(Serialize, Deserialize, Debug, Clone, Default, PartialEq, Eq, JsonSchema)]

codex-rs/features/src/tests.rs

@@ -29,14 +29,16 @@ fn under_development_features_are_disabled_by_default() {
 
 #[test]
 fn tool_registry_config_is_not_a_feature_toggle() {
-    let features: FeaturesToml =
-        toml::from_str("[tool_registry]\nerror_on_tool_collisions = true\n")
-            .expect("tool registry settings should deserialize");
+    let features: FeaturesToml = toml::from_str(
+        "[tool_registry]\nerror_on_tool_collisions = true\ninclude_tool_namespaces_info = true\n",
+    )
+    .expect("tool registry settings should deserialize");
 
     assert_eq!(
         features.tool_registry,
         Some(crate::ToolRegistryConfigToml {
             error_on_tool_collisions: Some(true),
+            include_tool_namespaces_info: Some(true),
         })
     );
     assert!(features.entries().is_empty());
@@ -552,6 +554,7 @@ fn materialize_resolved_enabled_writes_all_features_and_preserves_custom_config(
     let mut features_toml = FeaturesToml {
         tool_registry: Some(crate::ToolRegistryConfigToml {
             error_on_tool_collisions: Some(true),
+            include_tool_namespaces_info: Some(true),
         }),
         code_mode_host: Some(FeatureToml::Config(crate::CodeModeHostConfigToml {
             enabled: Some(false),
@@ -584,6 +587,7 @@ fn materialize_resolved_enabled_writes_all_features_and_preserves_custom_config(
         features_toml.tool_registry,
         Some(crate::ToolRegistryConfigToml {
             error_on_tool_collisions: Some(true),
+            include_tool_namespaces_info: Some(true),
         })
     );
     let entries = features_toml.entries();