refactor(agent): extract block chunker + tool adapter

src/agents/pi-tool-definition-adapter.ts

@@ -0,0 +1,31 @@
+import type {
+  AgentTool,
+  AgentToolResult,
+  AgentToolUpdateCallback,
+} from "@mariozechner/pi-agent-core";
+import type { ToolDefinition } from "@mariozechner/pi-coding-agent";
+
+// biome-ignore lint/suspicious/noExplicitAny: TypeBox schema type from pi-agent-core uses a different module instance.
+type AnyAgentTool = AgentTool<any, unknown>;
+
+export function toToolDefinitions(tools: AnyAgentTool[]): ToolDefinition[] {
+  return tools.map((tool) => {
+    const name = tool.name || "tool";
+    return {
+      name,
+      label: tool.label ?? name,
+      description: tool.description ?? "",
+      // biome-ignore lint/suspicious/noExplicitAny: TypeBox schema from pi-agent-core uses a different module instance.
+      parameters: tool.parameters as any,
+      execute: async (
+        toolCallId,
+        params,
+        onUpdate: AgentToolUpdateCallback<unknown> | undefined,
+        _ctx,
+        signal,
+      ): Promise<AgentToolResult<unknown>> => {
+        return tool.execute(toolCallId, params, signal, onUpdate);
+      },
+    } satisfies ToolDefinition;
+  });
+}