refactor(src): split oversized modules

src/agents/pi-embedded-runner/tool-split.ts

@@ -0,0 +1,21 @@
+import type { AgentTool } from "@mariozechner/pi-agent-core";
+
+import { toToolDefinitions } from "../pi-tool-definition-adapter.js";
+
+// We always pass tools via `customTools` so our policy filtering, sandbox integration,
+// and extended toolset remain consistent across providers.
+type AnyAgentTool = AgentTool;
+
+export function splitSdkTools(options: {
+  tools: AnyAgentTool[];
+  sandboxEnabled: boolean;
+}): {
+  builtInTools: AnyAgentTool[];
+  customTools: ReturnType<typeof toToolDefinitions>;
+} {
+  const { tools } = options;
+  return {
+    builtInTools: [],
+    customTools: toToolDefinitions(tools),
+  };
+}