feat(agent-loop): run safe tool calls in parallel

packages/core/agent-loop/src/constants.ts

@@ -0,0 +1,15 @@
+/**
+ * Loop-level tunable defaults shared between the plugin entry (`index.ts`) and
+ * the tool-call scheduler (`tool-calls.ts`). Kept in a leaf module so importing
+ * a default never pulls in the service class or the scheduler.
+ *
+ * @module dsh-agent-loop/constants
+ */
+
+/**
+ * Default cap on simultaneously in-flight tool calls within one assistant step,
+ * when {@link AgentOptions.maxParallelToolCalls} is unset. Matches the
+ * rolling-pool size Claude Code uses; a group larger than the cap is not
+ * truncated — the cap limits concurrency, not the group.
+ */
+export const DEFAULT_MAX_PARALLEL_TOOL_CALLS = 10