feat: Add ACP (Agent Client Protocol) support (#2947)

Co-authored-by: opencode-bot <devnull@opencode.local>
Co-authored-by: Dax Raad <d@ironbay.co>
Co-authored-by: GitHub Action <action@github.com>

packages/opencode/src/tool/write.ts

@@ -10,8 +10,6 @@ import { FileTime } from "../file/time"
 import { Filesystem } from "../util/filesystem"
 import { Instance } from "../project/instance"
 import { Agent } from "../agent/agent"
-import { createTwoFilesPatch } from "diff"
-import { trimDiff } from "./edit"
 
 export const WriteTool = Tool.define("write", {
   description: DESCRIPTION,
@@ -29,13 +27,6 @@ export const WriteTool = Tool.define("write", {
     const exists = await file.exists()
     if (exists) await FileTime.assert(ctx.sessionID, filepath)
 
-    let oldContent = ""
-    let diff = ""
-
-    if (exists) {
-      oldContent = await file.text()
-    }
-
     const agent = await Agent.get(ctx.agent)
     if (agent.permission.edit === "ask")
       await Permission.ask({
@@ -57,9 +48,6 @@ export const WriteTool = Tool.define("write", {
     })
     FileTime.read(ctx.sessionID, filepath)
 
-    // Generate diff for the write operation
-    diff = trimDiff(createTwoFilesPatch(filepath, filepath, oldContent, params.content))
-
     let output = ""
     await LSP.touchFile(filepath, true)
     const diagnostics = await LSP.diagnostics()