hive-c0re: annotate remaining dashboard routes with utoipa

hive-c0re/src/dashboard/infra_containers.rs

@@ -22,6 +22,19 @@ use super::{AppState, error_response};
 /// `restart_infra`) and streams as an `AuditEntryAdded` event, so
 /// operator-driven and agent-driven (`infra_admin`) infra actions show up
 /// in the same AUDIT view.
+#[utoipa::path(
+    post,
+    path = "/api/infra-container/{name}/{action}",
+    params(
+        ("name" = String, Path, description = "infra container name (hive-ci/hive-forge/hive-gateway/hive-matrix)"),
+        ("action" = String, Path, description = "start | stop | restart"),
+    ),
+    responses(
+        (status = 200, description = "action completed", body = String),
+        (status = 500, description = "unknown container/action, or the systemd action failed"),
+    ),
+    tag = "infra_containers"
+)]
 pub(super) async fn post_infra_container(
     State(state): State<AppState>,
     AxumPath((name, action)): AxumPath<(String, String)>,