rebuild button on agent UI (cross-origin POST to dashboard /rebuild)

hive-c0re/src/auto_update.rs

@@ -64,6 +64,7 @@ pub async fn rebuild_agent(coord: &Arc<Coordinator>, name: &str, current_rev: &s
         &agent_dir,
         &applied_dir,
         &claude_dir,
+        coord.dashboard_port,
     )
     .await?;
     std::fs::write(rev_marker_path(name), current_rev)
@@ -112,6 +113,7 @@ pub async fn ensure_manager(coord: &Arc<Coordinator>) -> Result<()> {
         &proposed,
         &applied,
         &claude_dir,
+        coord.dashboard_port,
     )
     .await?;
     if let Some(rev) = current_rev {