feat: update adaptor methods and add new image model

relay/channel/xai/adaptor.go

@@ -18,18 +18,18 @@ type Adaptor struct {
 
 func (a *Adaptor) ConvertClaudeRequest(*gin.Context, *relaycommon.RelayInfo, *dto.ClaudeRequest) (any, error) {
 	//TODO implement me
-	panic("implement me")
-	return nil, nil
+	//panic("implement me")
+	return nil, errors.New("not available")
 }
 
 func (a *Adaptor) ConvertAudioRequest(c *gin.Context, info *relaycommon.RelayInfo, request dto.AudioRequest) (io.Reader, error) {
-	//TODO implement me
-	return nil, errors.New("not implemented")
+	//not available
+	return nil, errors.New("not available")
 }
 
 func (a *Adaptor) ConvertImageRequest(c *gin.Context, info *relaycommon.RelayInfo, request dto.ImageRequest) (any, error) {
-	//TODO implement me
-	return nil, errors.New("not implemented")
+	request.Size = ""
+	return request, nil
 }
 
 func (a *Adaptor) Init(info *relaycommon.RelayInfo) {
@@ -76,8 +76,8 @@ func (a *Adaptor) ConvertRerankRequest(c *gin.Context, relayMode int, request dt
 }
 
 func (a *Adaptor) ConvertEmbeddingRequest(c *gin.Context, info *relaycommon.RelayInfo, request dto.EmbeddingRequest) (any, error) {
-	//TODO implement me
-	return nil, errors.New("not implemented")
+	//not available
+	return nil, errors.New("not available")
 }
 
 func (a *Adaptor) DoRequest(c *gin.Context, info *relaycommon.RelayInfo, requestBody io.Reader) (any, error) {

relay/channel/xai/constants.go

@@ -8,7 +8,9 @@ var ModelList = []string{
 	// extend grok-3-mini reasoning
 	"grok-3-mini-beta-high", "grok-3-mini-beta-low", "grok-3-mini-beta-medium",
 	"grok-3-mini-fast-beta-high", "grok-3-mini-fast-beta-low", "grok-3-mini-fast-beta-medium",
-
+	// image model
+	"grok-2-image",
+	// legacy models
 	"grok-2", "grok-2-vision",
 	"grok-beta", "grok-vision-beta",
 }