[SMG][DS32][fix] support dsv32, add role developer (#14307)

sgl-model-gateway/src/protocols/chat.rs

@@ -56,6 +56,14 @@ pub enum ChatMessage {
     },
     #[serde(rename = "function")]
     Function { content: String, name: String },
+    #[serde(rename = "developer")]
+    Developer {
+        content: MessageContent,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        tools: Option<Vec<Tool>>,
+        #[serde(skip_serializing_if = "Option::is_none")]
+        name: Option<String>,
+    },
 }
 
 #[derive(Debug, Clone, Deserialize, Serialize, PartialEq)]
@@ -638,7 +646,10 @@ impl GenerationRequest for ChatCompletionRequest {
 
         for msg in &self.messages {
             match msg {
-                ChatMessage::System { content, .. } | ChatMessage::User { content, .. } => {
+                ChatMessage::System { content, .. }
+                | ChatMessage::User { content, .. }
+                | ChatMessage::Tool { content, .. }
+                | ChatMessage::Developer { content, .. } => {
                     if has_content && content.has_text() {
                         buffer.push(' ');
                     }
@@ -671,14 +682,6 @@ impl GenerationRequest for ChatCompletionRequest {
                         }
                     }
                 }
-                ChatMessage::Tool { content, .. } => {
-                    if has_content && content.has_text() {
-                        buffer.push(' ');
-                    }
-                    if content.append_text_to(&mut buffer) {
-                        has_content = true;
-                    }
-                }
                 ChatMessage::Function { content, .. } => {
                     if !content.is_empty() {
                         if has_content {

sgl-model-gateway/src/routers/grpc/harmony/builder.rs

@@ -711,6 +711,26 @@ impl HarmonyBuilder {
                     };
                     harmony_messages.push(harmony_msg);
                 }
+                ChatMessage::Developer {
+                    content,
+                    name,
+                    tools: _,
+                } => {
+                    // Developer messages stay as-is
+                    let harmony_msg = HarmonyMessage {
+                        author: Author {
+                            role: Role::Developer,
+                            name: name.clone(),
+                        },
+                        recipient: None,
+                        content: vec![Content::Text(TextContent {
+                            text: content.to_simple_string(),
+                        })],
+                        channel: None,
+                        content_type: None,
+                    };
+                    harmony_messages.push(harmony_msg);
+                }
 
                 ChatMessage::User { content, name } => {
                     // Extract text from user content

sgl-model-gateway/src/routers/http/pd_router.rs

@@ -1132,6 +1132,10 @@ impl RouterTrait for PDRouter {
                     MessageContent::Text(text) => Some(text.clone()),
                     MessageContent::Parts(_) => None,
                 },
+                ChatMessage::Developer { content, .. } => match content {
+                    MessageContent::Text(text) => Some(text.clone()),
+                    MessageContent::Parts(_) => None,
+                },
                 ChatMessage::System { content, .. } => Some(content.to_simple_string()),
                 _ => None,
             })