test(ai): find the wire clients that dial through the request budget

The call-timeout guard found its wire clients by a direct safeFetch call.
The Local and the OpenAI-compatible gateway clients now send through the
call's request budget (hops.fetch), so the guard looked at two clients and
failed its floor. It finds both spellings again.

Refs #1279

src/__tests__/ai-call-timeout-guard.test.ts

@@ -56,12 +56,15 @@ function code(rel: string): string {
   return stripComments(readFileSync(join(SRC, rel), "utf8"));
 }
 
-/** The wire clients: every `*-client.ts` that dials through `safeFetch`. */
+/**
+ * The wire clients: every `*-client.ts` that dials through `safeFetch`, or
+ * through the call's request budget (`hops.fetch`, `request-hops.ts`).
+ */
 function wireClients(): string[] {
   return readdirSync(AI_DIR)
     .filter((f) => f.endsWith("-client.ts"))
     .map((f) => `lib/ai/${f}`)
-    .filter((rel) => /\bsafeFetch\s*\(/.test(code(rel)))
+    .filter((rel) => /\b(?:safeFetch|hops\.fetch)\s*\(/.test(code(rel)))
     .sort();
 }