Merge branch 'alpha'

relay/channel/gemini/dto.go

@@ -140,6 +140,7 @@ type GeminiChatGenerationConfig struct {
 	Seed               int64                 `json:"seed,omitempty"`
 	ResponseModalities []string              `json:"responseModalities,omitempty"`
 	ThinkingConfig     *GeminiThinkingConfig `json:"thinkingConfig,omitempty"`
+	SpeechConfig       json.RawMessage       `json:"speechConfig,omitempty"` // RawMessage to allow flexible speech config
 }
 
 type GeminiChatCandidate struct {

relay/channel/gemini/relay-gemini.go

@@ -374,7 +374,9 @@ func CovertGemini2OpenAI(textRequest dto.GeneralOpenAIRequest, info *relaycommon
 		if content.Role == "assistant" {
 			content.Role = "model"
 		}
-		geminiRequest.Contents = append(geminiRequest.Contents, content)
+		if len(content.Parts) > 0 {
+			geminiRequest.Contents = append(geminiRequest.Contents, content)
+		}
 	}
 
 	if len(system_content) > 0 {