АДРЕСНЫЙ РЕЖИМ - ADDRESS: стабилизация интерпретации сленга и mixed RU/EN, расширение intent/mode-роутинга, регресс-тесты и live stress 102/102

llm_normalizer/backend/src/services/openaiResponsesClient.ts

@@ -132,6 +132,9 @@ function shouldFallbackToChatCompletions(error: unknown): boolean {
   if (!(error instanceof ApiError)) {
     return false;
   }
+  if (error.code === "OPENAI_OUTPUT_PARSE_FAILED" || error.code === "OPENAI_NON_JSON_RESPONSE") {
+    return true;
+  }
   if (error.code !== "OPENAI_REQUEST_FAILED") {
     return false;
   }
@@ -144,6 +147,35 @@ function shouldFallbackToChatCompletions(error: unknown): boolean {
   return message.includes("/responses") || message.includes("responses");
 }
 
+function extractModelErrorMessage(data: Record<string, unknown>): string | null {
+  const rawError = data.error;
+  if (typeof rawError === "string" && rawError.trim().length > 0) {
+    return rawError.trim();
+  }
+  if (rawError && typeof rawError === "object") {
+    const errorObj = rawError as Record<string, unknown>;
+    const message = errorObj.message;
+    if (typeof message === "string" && message.trim().length > 0) {
+      return message.trim();
+    }
+  }
+  return null;
+}
+
+function isRouteMismatchErrorMessage(message: string): boolean {
+  const source = String(message ?? "").toLowerCase();
+  if (!source) {
+    return false;
+  }
+  return (
+    /unexpected endpoint|unexpected route|unknown endpoint|unknown route|unsupported endpoint|unsupported route/.test(source) ||
+    (/endpoint/.test(source) && /method/.test(source)) ||
+    (/endpoint/.test(source) && /not found/.test(source)) ||
+    (/route/.test(source) && /not found/.test(source)) ||
+    (/path/.test(source) && /not found/.test(source))
+  );
+}
+
 function loadSchemaForTransport(schemaVersion: "v1" | "v2" | "v2_0_1" | "v2_0_2"): Record<string, unknown> {
   const schemaFile =
     schemaVersion === "v1"
@@ -398,11 +430,16 @@ export class OpenAIResponsesClient {
         }
       }
 
+      const modelErrorMessage = extractModelErrorMessage(data);
+      if (modelErrorMessage && canFallbackToAlternativeBase && !isLastCandidate && isRouteMismatchErrorMessage(modelErrorMessage)) {
+        continue;
+      }
+
       if (!response.ok) {
         const errorObj = (data.error ?? {}) as Record<string, unknown>;
         throw new ApiError(
           "OPENAI_REQUEST_FAILED",
-          String(errorObj.message ?? `Model endpoint failed: ${response.status}`),
+          modelErrorMessage ?? String(errorObj.message ?? `Model endpoint failed: ${response.status}`),
           response.status,
           {
             route: routePath,
@@ -414,6 +451,14 @@ export class OpenAIResponsesClient {
         );
       }
 
+      if (modelErrorMessage) {
+        throw new ApiError("OPENAI_REQUEST_FAILED", modelErrorMessage, 502, {
+          route: routePath,
+          url,
+          status: response.status
+        });
+      }
+
       return data;
     }