update error handling for invalid/expired API key or quota reached

Author: octref

runtime/models/models.go

@@ -93,8 +93,17 @@ func PostToModelEndpoint[TResult any](ctx context.Context, model *manifest.Model
 		var empty TResult
 		var httpe *utils.HttpError
 		if errors.As(err, &httpe) {
-			if app.IsDevEnvironment() && httpe.StatusCode == http.StatusNotFound {
-				return empty, fmt.Errorf("model %s is not available in the local dev environment", model.SourceModel)
+			switch httpe.StatusCode {
+			case http.StatusNotFound:
+				if app.IsDevEnvironment() {
+					return empty, fmt.Errorf("model %s is not available in the local dev environment", model.SourceModel)
+				}
+			case http.StatusUnauthorized:
+				return empty, fmt.Errorf("invalid or expired API key")
+			case http.StatusForbidden:
+				return empty, fmt.Errorf("API key is disabled or usage limit exceeded")
+			case http.StatusTooManyRequests:
+				return empty, fmt.Errorf("rate limit exceeded")
 			}
 		}