Q87: provider errors keep status and provider code; text never decides recovery

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/shared/provider-runtime-domain.ts

@@ -35,37 +35,9 @@ export interface ProviderRateLimitObservationRecord extends ProviderObservedRate
   observedAt: string;
 }
 
-/**
- * Exact message recorded on runs blocked by a provider's monthly usage window.
- * The heartbeat scheduler matches task_runs.error_message against this string
- * so quota-blocked attempts never consume a task's retry budget — the text is
- * a cross-module contract and also matches rows written by earlier builds
- * that inlined it.
- */
+/** The message of the typed error a run gets when its provider's monthly request allowance is used up. */
 export const PROVIDER_MONTHLY_LIMIT_MESSAGE = "Provider monthly request limit has been reached.";
 
-/**
- * Failure-message signatures of transient provider conditions — the account's
- * usage window filling up, rate limiting, or momentary overload. These verdicts
- * come from the provider's side of the wire and say nothing about the task, so
- * schedulers must treat them as "try again later", never as attempts consumed.
- * Matched case-insensitively against recorded task_runs.error_message rows,
- * which also heals historical rows written before this classification existed.
- */
-export const TRANSIENT_PROVIDER_FAILURE_SIGNATURES = [
-  PROVIDER_MONTHLY_LIMIT_MESSAGE,
-  "usage limit", // ChatGPT-account plans: "The usage limit has been reached"
-  "rate limit",
-  "too many requests", // HTTP 429 status text
-  "overloaded", // "Our servers are currently overloaded. Please try again later."
-].map((signature) => signature.toLowerCase());
-
-export function isTransientProviderFailure(message: string | null | undefined): boolean {
-  if (!message) return false;
-  const normalized = message.toLowerCase();
-  return TRANSIENT_PROVIDER_FAILURE_SIGNATURES.some((signature) => normalized.includes(signature));
-}
-
 export function currentProviderUsageWindow(now = new Date()): { start: string; end: string } {
   const start = new Date(Date.UTC(now.getUTCFullYear(), now.getUTCMonth(), 1));
   const end = new Date(Date.UTC(now.getUTCFullYear(), now.getUTCMonth() + 1, 1));