Reapply "feat(desktop): terminal pane (#5081)"

This reverts commit f9dcd97936.

packages/opencode/src/server/error.ts

@@ -0,0 +1,36 @@
+import { resolver } from "hono-openapi"
+import z from "zod"
+import { Storage } from "../storage/storage"
+
+export const ERRORS = {
+  400: {
+    description: "Bad request",
+    content: {
+      "application/json": {
+        schema: resolver(
+          z
+            .object({
+              data: z.any(),
+              errors: z.array(z.record(z.string(), z.any())),
+              success: z.literal(false),
+            })
+            .meta({
+              ref: "BadRequestError",
+            }),
+        ),
+      },
+    },
+  },
+  404: {
+    description: "Not found",
+    content: {
+      "application/json": {
+        schema: resolver(Storage.NotFoundError.Schema),
+      },
+    },
+  },
+} as const
+
+export function errors(...codes: number[]) {
+  return Object.fromEntries(codes.map((code) => [code, ERRORS[code as keyof typeof ERRORS]]))
+}