refactor: trim tool display type exports

src/agents/subagent-list.ts

@@ -29,7 +29,7 @@ import {
   shouldKeepSubagentRunChildLink,
 } from "./subagent-run-liveness.js";
 
-export type SubagentListItem = {
+type SubagentListItem = {
   index: number;
   line: string;
   runId: string;

src/agents/tool-display-common.ts

@@ -17,7 +17,7 @@ export type ToolDisplaySpec = {
   actions?: Record<string, ToolDisplayActionSpec>;
 };
 
-export type CoerceDisplayValueOptions = {
+type CoerceDisplayValueOptions = {
   includeFalse?: boolean;
   includeZero?: boolean;
   includeNonFinite?: boolean;

src/agents/tool-display.ts

@@ -10,7 +10,7 @@ import {
 } from "./tool-display-common.js";
 import { TOOL_DISPLAY_CONFIG } from "./tool-display-config.js";
 
-export type ToolDisplay = {
+type ToolDisplay = {
   name: string;
   emoji: string;
   title: string;