refactor(agents): narrow unused helper exports

src/agents/generated-attachments.ts

@@ -17,10 +17,7 @@ export type AgentGeneratedAttachment = {
   name?: string;
 };
 
-/** Resolve the first usable path or URL reference for a generated attachment. */
-export function generatedAttachmentReference(
-  attachment: AgentGeneratedAttachment,
-): string | undefined {
+function generatedAttachmentReference(attachment: AgentGeneratedAttachment): string | undefined {
   return normalizeOptionalString(
     attachment.path ?? attachment.url ?? attachment.mediaUrl ?? attachment.filePath,
   );
@@ -35,10 +32,7 @@ export function mediaUrlsFromGeneratedAttachments(
   );
 }
 
-/** Resolve a display name from attachment metadata or path basename. */
-export function nameFromGeneratedAttachment(
-  attachment: AgentGeneratedAttachment,
-): string | undefined {
+function nameFromGeneratedAttachment(attachment: AgentGeneratedAttachment): string | undefined {
   return (
     normalizeOptionalString(attachment.name) ??
     basenameFromAnyPath(generatedAttachmentReference(attachment) ?? "")

src/agents/live-auth-keys.ts

@@ -173,11 +173,6 @@ export function collectAnthropicApiKeys(): string[] {
   return collectProviderApiKeys("anthropic");
 }
 
-/** Collect Gemini API keys for live cache/model tests. */
-export function collectGeminiApiKeys(): string[] {
-  return collectProviderApiKeys("google");
-}
-
 /** Return whether a provider error message indicates API-key rate limiting. */
 export function isApiKeyRateLimitError(message: string): boolean {
   const lower = normalizeLowercaseStringOrEmpty(message);
@@ -202,11 +197,6 @@ export function isApiKeyRateLimitError(message: string): boolean {
   return false;
 }
 
-/** Return whether an Anthropic error message indicates rate limiting. */
-export function isAnthropicRateLimitError(message: string): boolean {
-  return isApiKeyRateLimitError(message);
-}
-
 /** Return whether an Anthropic error message indicates billing exhaustion. */
 export function isAnthropicBillingError(message: string): boolean {
   const lower = normalizeLowercaseStringOrEmpty(message);

src/agents/mcp-http-fetch.ts

@@ -16,7 +16,7 @@ import { loadUndiciRuntimeDeps } from "../infra/net/undici-runtime.js";
 export type { FetchLike };
 
 /** Default MCP HTTP fetch backed by lazy-loaded undici runtime deps. */
-export const fetchWithUndici: FetchLike = async (url, init) =>
+const fetchWithUndici: FetchLike = async (url, init) =>
   (await loadUndiciRuntimeDeps().fetch(
     url,
     init as Parameters<ReturnType<typeof loadUndiciRuntimeDeps>["fetch"]>[1],