Function anchor

packages/hosts/mcp/src/tool-server.ts:1139–1142

(effect: Effect.Effect<A, EffE>)

      return typeof ps === "function" ? ps() : ps;
    };
    const anchor = <A, EffE>(effect: Effect.Effect<A, EffE>): Effect.Effect<A, EffE> => {
      const parent = resolveParentSpan();
      return parent ? Effect.withParentSpan(effect, parent) : effect;
    };
    const runToolEffect = <EffE>(effect: Effect.Effect<McpToolResult, EffE>) =>
      Effect.runPromiseWith(context)(
        anchor(effect).pipe(