feat(tui): add v2 terminal interface

packages/core/src/tool/edit.ts

@@ -7,6 +7,8 @@
 export * as EditTool from "./edit"
 
 import { ToolFailure } from "@opencode-ai/llm"
+import { FileDiff } from "@opencode-ai/schema/file-diff"
+import { createTwoFilesPatch, diffLines } from "diff"
 import { Effect, Layer, Schema } from "effect"
 import { FileMutation } from "../file-mutation"
 import { FSUtil } from "../fs-util"
@@ -30,10 +32,7 @@ export const Input = Schema.Struct({
 })
 
 export const Output = Schema.Struct({
-  operation: Schema.Literal("write"),
-  target: Schema.String,
-  resource: Schema.String,
-  existed: Schema.Boolean,
+  files: Schema.Array(FileDiff.Info),
   replacements: Schema.Number,
 })
 export type Output = typeof Output.Type
@@ -71,7 +70,7 @@ const previewLines = (value: string, prefix: "+" | "-") => {
 
 export const toModelOutput = (output: Output, oldString: string, newString: string) =>
   [
-    `Edited file successfully: ${output.resource}`,
+    `Edited file successfully: ${output.files[0]?.file}`,
     `Replacements: ${output.replacements}`,
     "```diff",
     ...previewLines(oldString, "-"),
@@ -179,6 +178,13 @@ export const layer = Layer.effectDiscard(
                   input.replaceAll === true
                     ? source.text.replaceAll(oldString, newString)
                     : source.text.replace(oldString, newString)
+                const counts = diffLines(source.text, replaced).reduce(
+                  (result, item) => ({
+                    additions: result.additions + (item.added ? (item.count ?? 0) : 0),
+                    deletions: result.deletions + (item.removed ? (item.count ?? 0) : 0),
+                  }),
+                  { additions: 0, deletions: 0 },
+                )
                 const next = splitBom(replaced)
                 const result = yield* unableToEdit(
                   files.writeIfUnchanged({
@@ -187,7 +193,17 @@ export const layer = Layer.effectDiscard(
                     content: joinBom(next.text, source.bom || next.bom),
                   }),
                 )
-                return { ...result, replacements } satisfies Output
+                return {
+                  files: [
+                    {
+                      file: result.resource,
+                      patch: createTwoFilesPatch(result.resource, result.resource, source.text, replaced),
+                      status: "modified" as const,
+                      ...counts,
+                    },
+                  ],
+                  replacements,
+                } satisfies Output
               })
             },
           }),