feat: support DeepSeek V4 reasoning suffix handling

setting/reasoning/suffix.go

@@ -8,9 +8,17 @@ import (
 
 var EffortSuffixes = []string{"-max", "-xhigh", "-high", "-medium", "-low", "-minimal"}
 
+var OpenAIEffortSuffixes = []string{"-high", "-minimal", "-low", "-medium", "-none", "-xhigh"}
+
+var DeepSeekV4EffortSuffixes = []string{"-none", "-max"}
+
 // TrimEffortSuffix -> modelName level(low) exists
 func TrimEffortSuffix(modelName string) (string, string, bool) {
-	suffix, found := lo.Find(EffortSuffixes, func(s string) bool {
+	return TrimEffortSuffixWithSuffixes(modelName, EffortSuffixes)
+}
+
+func TrimEffortSuffixWithSuffixes(modelName string, suffixes []string) (string, string, bool) {
+	suffix, found := lo.Find(suffixes, func(s string) bool {
 		return strings.HasSuffix(modelName, s)
 	})
 	if !found {
@@ -18,3 +26,26 @@ func TrimEffortSuffix(modelName string) (string, string, bool) {
 	}
 	return strings.TrimSuffix(modelName, suffix), strings.TrimPrefix(suffix, "-"), true
 }
+
+func ParseOpenAIReasoningEffortFromModelSuffix(modelName string) (string, string) {
+	baseModel, effort, ok := TrimEffortSuffixWithSuffixes(modelName, OpenAIEffortSuffixes)
+	if !ok {
+		return "", modelName
+	}
+	return effort, baseModel
+}
+
+func ParseDeepSeekV4ThinkingSuffix(modelName string) (baseModel string, thinkingType string, effort string, ok bool) {
+	baseModel, suffix, ok := TrimEffortSuffixWithSuffixes(modelName, DeepSeekV4EffortSuffixes)
+	if !ok || !strings.HasPrefix(baseModel, "deepseek-v4-") {
+		return modelName, "", "", false
+	}
+	switch suffix {
+	case "none":
+		return baseModel, "disabled", "", true
+	case "max":
+		return baseModel, "enabled", "max", true
+	default:
+		return modelName, "", "", false
+	}
+}