Fix failover for zhipuai 1310 Weekly/Monthly Limit Exhausted (#33813)

Merged via squash.

Prepared head SHA: 3dc441e58d
Co-authored-by: zhouhe-xydt <265407618+zhouhe-xydt@users.noreply.github.com>
Co-authored-by: altaywtf <9790196+altaywtf@users.noreply.github.com>
Reviewed-by: @altaywtf

src/agents/pi-embedded-helpers/errors.ts

@@ -8,6 +8,7 @@ import {
   isAuthPermanentErrorMessage,
   isBillingErrorMessage,
   isOverloadedErrorMessage,
+  isPeriodicUsageLimitErrorMessage,
   isRateLimitErrorMessage,
   isTimeoutErrorMessage,
   matchesFormatErrorPattern,
@@ -842,6 +843,9 @@ export function classifyFailoverReason(raw: string): FailoverReason | null {
   if (isJsonApiInternalServerError(raw)) {
     return "timeout";
   }
+  if (isPeriodicUsageLimitErrorMessage(raw)) {
+    return isBillingErrorMessage(raw) ? "billing" : "rate_limit";
+  }
   if (isRateLimitErrorMessage(raw)) {
     return "rate_limit";
   }

src/agents/pi-embedded-helpers/failover-matches.ts

@@ -1,5 +1,8 @@
 type ErrorPattern = RegExp | string;
 
+const PERIODIC_USAGE_LIMIT_RE =
+  /\b(?:daily|weekly|monthly)(?:\/(?:daily|weekly|monthly))* (?:usage )?limit(?:s)?(?: (?:exhausted|reached|exceeded))?\b/i;
+
 const ERROR_PATTERNS = {
   rateLimit: [
     /rate[_ ]limit|too many requests|429/,
@@ -117,6 +120,10 @@ export function isTimeoutErrorMessage(raw: string): boolean {
   return matchesErrorPatterns(raw, ERROR_PATTERNS.timeout);
 }
 
+export function isPeriodicUsageLimitErrorMessage(raw: string): boolean {
+  return PERIODIC_USAGE_LIMIT_RE.test(raw);
+}
+
 export function isBillingErrorMessage(raw: string): boolean {
   const value = raw.toLowerCase();
   if (!value) {