fix

apps/api/internal/processing/sanitize.go

@@ -68,8 +68,8 @@ func truncateRunes(s string, max int) string {
 }
 
 const (
-	publicErrProcessingFailed     = "processing_failed"
-	publicErrProviderUnavailable  = "provider_unavailable"
+	publicErrProcessingFailed    = "processing_failed"
+	publicErrProviderUnavailable = "provider_unavailable"
 )
 
 // TruncateError returns a safe, short error string for DB storage / API clients.
@@ -139,6 +139,9 @@ func PublicV1Error(msg string) string {
 	if code := mapPublicErrorCode(cleaned); code != "" {
 		return code
 	}
+	if code := mapPublicV1FallbackCode(cleaned); code != "" {
+		return code
+	}
 	if looksLikeInternalProviderError(cleaned) {
 		return publicErrProcessingFailed
 	}
@@ -172,10 +175,6 @@ func mapPublicErrorCode(msg string) string {
 		return publicErrProviderUnavailable
 	case strings.Contains(lower, "ai_enhance: skipped"):
 		return publicErrProcessingFailed
-	case strings.Contains(lower, "unavailable"),
-		strings.Contains(lower, "http 503"),
-		strings.Contains(lower, "overloaded"):
-		return publicErrProviderUnavailable
 	case strings.Contains(lower, "openai"),
 		strings.Contains(lower, "gpt-"),
 		strings.Contains(lower, " for model"):
@@ -184,6 +183,17 @@ func mapPublicErrorCode(msg string) string {
 	return ""
 }
 
+func mapPublicV1FallbackCode(msg string) string {
+	lower := strings.ToLower(strings.TrimSpace(msg))
+	switch {
+	case strings.Contains(lower, "unavailable"),
+		strings.Contains(lower, "http 503"),
+		strings.Contains(lower, "overloaded"):
+		return publicErrProviderUnavailable
+	}
+	return ""
+}
+
 func looksLikeInternalProviderError(msg string) bool {
 	lower := strings.ToLower(msg)
 	for _, n := range []string{