feat: manually mirror opencoze's code from bytedance

Change-Id: I09a73aadda978ad9511264a756b2ce51f5761adf

backend/domain/conversation/message/entity/message_ext.go

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2025 coze-dev Authors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package entity
+
+type MessageExtKey string
+
+const (
+	MessageExtKeyInputTokens         MessageExtKey = "input_tokens"
+	MessageExtKeyOutputTokens        MessageExtKey = "output_tokens"
+	MessageExtKeyToken               MessageExtKey = "token"
+	MessageExtKeyPluginStatus        MessageExtKey = "plugin_status"
+	MessageExtKeyTimeCost            MessageExtKey = "time_cost"
+	MessageExtKeyWorkflowTokens      MessageExtKey = "workflow_tokens"
+	MessageExtKeyBotState            MessageExtKey = "bot_state"
+	MessageExtKeyPluginRequest       MessageExtKey = "plugin_request"
+	MessageExtKeyToolName            MessageExtKey = "tool_name"
+	MessageExtKeyPlugin              MessageExtKey = "plugin"
+	MessageExtKeyMockHitInfo         MessageExtKey = "mock_hit_info"
+	MessageExtKeyMessageTitle        MessageExtKey = "message_title"
+	MessageExtKeyStreamPluginRunning MessageExtKey = "stream_plugin_running"
+	MessageExtKeyExecuteDisplayName  MessageExtKey = "execute_display_name"
+	MessageExtKeyTaskType            MessageExtKey = "task_type"
+	MessageExtKeyCallID              MessageExtKey = "call_id"
+	ExtKeyResumeInfo                 MessageExtKey = "resume_info"
+	ExtKeyBreakPoint                 MessageExtKey = "break_point"
+	ExtKeyToolCallsIDs               MessageExtKey = "tool_calls_ids"
+	ExtKeyRequiresAction             MessageExtKey = "requires_action"
+)
+
+type BotStateExt struct {
+	BotID     string `json:"bot_id"`
+	AgentName string `json:"agent_name"`
+	AgentID   string `json:"agent_id"`
+	Awaiting  string `json:"awaiting"`
+}
+
+type UsageExt struct {
+	TotalCount   int64 `json:"total_count"`
+	InputTokens  int64 `json:"input_tokens"`
+	OutputTokens int64 `json:"output_tokens"`
+}