fix: createMessage 字段名改为 senderType/contentType 匹配后端 DTO

mini-program/src/pages/main/ScriptView.vue

@@ -709,8 +709,8 @@ const initializeFirstAIMessage = async () => {
       await createMessage({
         conversationId: conversationId.value,
         content: theme,
-        sender: 'user',
-        type: 'chat'
+        senderType: 'user',
+        contentType: 'chat'
       })
     }
 
@@ -718,9 +718,8 @@ const initializeFirstAIMessage = async () => {
     await createMessage({
       conversationId: conversationId.value,
       content,
-      sender: 'assistant',
-      type: 'script',
-      metadata: JSON.stringify(currentResult.value?.plotJson || {}),
+      senderType: 'assistant',
+      contentType: 'script',
       versionNumber: 1
     })
   } catch (error) {
@@ -798,8 +797,8 @@ const sendChat = async () => {
   const userMessageRes = await createMessage({
     conversationId: conversationId.value,
     content,
-    sender: 'user',
-    type: 'chat'
+    senderType: 'user',
+    contentType: 'chat'
   })
   const userMessageId = userMessageRes.data?.id
 
@@ -849,8 +848,8 @@ const sendRewrite = async (targetMessageId, content) => {
   const userMessageRes = await createMessage({
     conversationId: conversationId.value,
     content,
-    sender: 'user',
-    type: 'chat'
+    senderType: 'user',
+    contentType: 'chat'
   })
   const userMessageId = userMessageRes.data?.id