Revert pr that was mistakenly merged (#11844)

packages/opencode/src/tool/read.ts

@@ -6,6 +6,7 @@ import { LSP } from "../lsp"
 import { FileTime } from "../file/time"
 import DESCRIPTION from "./read.txt"
 import { Instance } from "../project/instance"
+import { Identifier } from "../id/id"
 import { assertExternalDirectory } from "./external-directory"
 import { InstructionPrompt } from "../session/instruction"
 
@@ -78,6 +79,9 @@ export const ReadTool = Tool.define("read", {
         },
         attachments: [
           {
+            id: Identifier.ascending("part"),
+            sessionID: ctx.sessionID,
+            messageID: ctx.messageID,
             type: "file",
             mime,
             url: `data:${mime};base64,${Buffer.from(await file.bytes()).toString("base64")}`,