Fix Rig tool continuation and plan creation

app/src/ai/runtime/rig_request_tests.rs

@@ -124,6 +124,31 @@ fn builds_a_rig_turn_directly_from_galaxy_request_state() {
     ));
 }
 
+#[test]
+fn normal_turn_advertises_plan_creation_and_corrects_false_unavailability_claims() {
+    let mut params = RequestParams::new_for_test();
+    params.planning_enabled = true;
+    params.input = vec![user_query("Please create a plan, and let's review.")];
+
+    let prepared = prepare_rig_turn(
+        &config(),
+        params,
+        vec![ToolType::CreateDocuments],
+        Vec::new(),
+    );
+    let prompt = prepared.request.system_prompt.expect("system prompt");
+
+    assert!(prepared
+        .request
+        .tools
+        .iter()
+        .any(|tool| tool.name == "create_plan"));
+    assert!(prompt.contains("Plan document creation is available through `create_plan`"));
+    assert!(prompt.contains("do not merely return the plan as prose"));
+    assert!(prompt.contains("no plan-creation tool is available"));
+    assert!(prompt.contains("do not implement it until they approve"));
+}
+
 #[test]
 fn no_tools_turn_flattens_historical_tool_protocol_messages() {
     let mut params = RequestParams::new_for_test();