fix(agent): rename spawn_parallel graph topology to resolve dual kind collision (#5601)

src/openhuman/agent/tinyagents/topology.rs

@@ -70,7 +70,7 @@ pub(crate) fn all_graph_topologies() -> Vec<GraphTopologyReport> {
         crate::openhuman::agent::orchestration::spawn_parallel_graph::spawn_parallel_graph_topology(
         )
     {
-        out.push(describe("spawn_parallel_agents", &t));
+        out.push(describe("spawn_parallel_graph", &t));
     }
 
     // Not exported: generic item-count-driven `map_reduce` fan-outs whose node
@@ -103,7 +103,7 @@ mod tests {
     #[test]
     fn all_topologies_includes_delegation_and_workflow_scheduler() {
         let reports = all_graph_topologies();
-        for name in ["delegation", "workflow_runs:scheduler"] {
+        for name in ["delegation", "workflow_runs:scheduler", "spawn_parallel_graph"] {
             let report = reports
                 .iter()
                 .find(|r| r.name == name)
@@ -121,6 +121,22 @@ mod tests {
         }
     }
 
+    #[test]
+    fn all_topologies_names_do_not_collide_with_default_tools() {
+        let security = std::sync::Arc::new(crate::openhuman::security::SecurityPolicy::default());
+        let tools = crate::openhuman::tools::default_tools(security);
+        let tool_names: std::collections::HashSet<_> = tools.iter().map(|t| t.name()).collect();
+
+        let reports = all_graph_topologies();
+        for report in &reports {
+            assert!(
+                !tool_names.contains(report.name),
+                "graph name '{}' collides with registered tool of the same name",
+                report.name
+            );
+        }
+    }
+
     #[test]
     fn delegation_topology_names_the_revision_loop_nodes() {
         let t = super::super::delegation::delegation_graph_topology().expect("builds");