fixed: #1407

fix(translator): adjust "developer" role to "user" and ignore unsupported tool types

internal/runtime/executor/gemini_vertex_executor.go

@@ -1003,6 +1003,8 @@ func vertexBaseURL(location string) string {
 	loc := strings.TrimSpace(location)
 	if loc == "" {
 		loc = "us-central1"
+	} else if loc == "global" {
+		return "https://aiplatform.googleapis.com"
 	}
 	return fmt.Sprintf("https://%s-aiplatform.googleapis.com", loc)
 }

internal/translator/openai/openai/responses/openai_openai-responses_request.go

@@ -68,6 +68,9 @@ func ConvertOpenAIResponsesRequestToOpenAIChatCompletions(modelName string, inpu
 			case "message", "":
 				// Handle regular message conversion
 				role := item.Get("role").String()
+				if role == "developer" {
+					role = "user"
+				}
 				message := `{"role":"","content":""}`
 				message, _ = sjson.Set(message, "role", role)
 
@@ -167,7 +170,8 @@ func ConvertOpenAIResponsesRequestToOpenAIChatCompletions(modelName string, inpu
 			// Only function tools need structural conversion because Chat Completions nests details under "function".
 			toolType := tool.Get("type").String()
 			if toolType != "" && toolType != "function" && tool.IsObject() {
-				chatCompletionsTools = append(chatCompletionsTools, tool.Value())
+				// Almost all providers lack built-in tools, so we just ignore them.
+				// chatCompletionsTools = append(chatCompletionsTools, tool.Value())
 				return true
 			}