Revert pr that was mistakenly merged (#11844)

packages/opencode/src/tool/batch.ts

@@ -77,12 +77,6 @@ export const BatchTool = Tool.define("batch", async () => {
           })
 
           const result = await tool.execute(validatedParams, { ...ctx, callID: partID })
-          const attachments = result.attachments?.map((attachment) => ({
-            ...attachment,
-            id: Identifier.ascending("part"),
-            messageID: ctx.messageID,
-            sessionID: ctx.sessionID,
-          }))
 
           await Session.updatePart({
             id: partID,
@@ -97,7 +91,7 @@ export const BatchTool = Tool.define("batch", async () => {
               output: result.output,
               title: result.title,
               metadata: result.metadata,
-              attachments,
+              attachments: result.attachments,
               time: {
                 start: callStartTime,
                 end: Date.now(),