Update documentation for assistant configuration and interaction models

- Corrected phrasing in the introduction of RAS as an open-source alternative.
- Added new documentation sections for voice AI and voice agents.
- Enhanced the flowchart for assistant components to include detailed configurations.
- Updated terminology for engine types to clarify distinctions between Pipeline and Realtime engines.
- Introduced a new section on user utterance endpoints (EoU) to explain detection mechanisms and configurations.

docs/content/concepts/assistants.md

@@ -11,32 +11,47 @@
 ### 助手的组成
 
 ```mermaid
-flowchart TB
+flowchart
     subgraph Assistant["助手"]
-        Identity[身份定义]
-        Models[模型配置]
-        Capabilities[能力扩展]
-        Behavior[行为控制]
+        direction TB
+        Prompts[指令配置]
+        Audio[语音配置]
+        Interaction[交互配置]
+        tool[工具配置]
+        knowledge[知识配置]
+        webhooks[webhooks]
     end
 
-    subgraph Identity
+    subgraph Prompts
         Name[名称]
-        Prompt[系统提示词]
-        Language[语言]
+        Prompt[提示词]
+        Opener[开场白]
     end
 
-    subgraph Models
+    subgraph Audio
         LLM[LLM 模型]
         ASR[ASR 模型]
         TTS[TTS 声音]
     end
 
-    subgraph Capabilities
+    subgraph Interaction
         Tools[工具调用]
         KB[知识库]
     end
 
-    subgraph Behavior
+    subgraph tool
+        Greeting[开场白]
+        Interruption[打断设置]
+        Output[输出模式]
+    end
+
+    subgraph knowledge
+        Greeting[开场白]
+        Interruption[打断设置]
+        Output[输出模式]
+    end
+
+    subgraph webhooks
         Greeting[开场白]
         Interruption[打断设置]
         Output[输出模式]
@@ -192,38 +207,6 @@ flowchart LR
 
 ---
 
-## 助手版本管理
-
-### 草稿与发布
-
-```mermaid
-gitGraph
-    commit id: "创建助手"
-    commit id: "配置提示词"
-    commit id: "添加工具"
-    branch published
-    checkout published
-    commit id: "发布 v1"
-    checkout main
-    commit id: "修改提示词"
-    commit id: "调整参数"
-    checkout published
-    merge main id: "发布 v2"
-```
-
-- **草稿**: 可随时修改，仅供测试
-- **发布**: 正式上线，用于生产环境
-
-### 配置导入导出
-
-支持以 JSON 格式导入导出助手配置，便于：
-
-- 备份和恢复
-- 跨环境迁移
-- 团队共享模板
-
----
-
 ## 最佳实践
 
 ### 1. 提示词工程