fix: update schema and scope test spawn helper

codex-rs/core/config.schema.json

@@ -358,6 +358,9 @@
           "default": null,
           "description": "Optional feature toggles scoped to this profile.",
           "properties": {
+            "agent_prompt_injection": {
+              "type": "boolean"
+            },
             "agent_watchdog": {
               "type": "boolean"
             },
@@ -3863,6 +3866,9 @@
       "default": null,
       "description": "Centralized feature flags (new). Prefer this over individual toggles.",
       "properties": {
+        "agent_prompt_injection": {
+          "type": "boolean"
+        },
         "agent_watchdog": {
           "type": "boolean"
         },

codex-rs/core/src/agent/control.rs

@@ -193,6 +193,7 @@ impl AgentControl {
     }
 
     /// Spawn a new agent thread and submit the initial prompt.
+    #[allow(dead_code)]
     pub(crate) async fn spawn_agent(
         &self,
         config: crate::config::Config,