refactor(httpapi): fork server startup by flag (#24799)

packages/opencode/test/server/httpapi-json-parity.test.ts

@@ -1,10 +1,9 @@
 import { afterEach, describe, expect } from "bun:test"
-import type { UpgradeWebSocket } from "hono/ws"
 import { Effect } from "effect"
 import { Flag } from "@opencode-ai/core/flag/flag"
 import { ModelID, ProviderID } from "../../src/provider/schema"
 import { Instance } from "../../src/project/instance"
-import { InstanceRoutes } from "../../src/server/routes/instance"
+import { Server } from "../../src/server/server"
 import { ExperimentalPaths } from "../../src/server/routes/instance/httpapi/experimental"
 import { SessionPaths } from "../../src/server/routes/instance/httpapi/session"
 import { MessageID, PartID } from "../../src/session/schema"
@@ -17,12 +16,12 @@ import { it } from "../lib/effect"
 void Log.init({ print: false })
 
 const original = Flag.OPENCODE_EXPERIMENTAL_HTTPAPI
-const websocket = (() => () => new Response(null, { status: 501 })) as unknown as UpgradeWebSocket
 
 function app(experimental: boolean) {
   Flag.OPENCODE_EXPERIMENTAL_HTTPAPI = experimental
-  return InstanceRoutes(websocket)
+  return Server.Default().app
 }
+type TestApp = ReturnType<typeof app>
 
 function pathFor(path: string, params: Record<string, string>) {
   return Object.entries(params).reduce((result, [key, value]) => result.replace(`:${key}`, value), path)
@@ -60,9 +59,9 @@ function withTmp<A, E, R>(
   ).pipe(Effect.flatMap((tmp) => fn(tmp).pipe(provideInstance(tmp.path))))
 }
 
-function readJson(label: string, app: ReturnType<typeof InstanceRoutes>, path: string, headers: HeadersInit) {
+function readJson(label: string, serverApp: TestApp, path: string, headers: HeadersInit) {
   return Effect.promise(async () => {
-    const response = await app.request(path, { headers })
+    const response = await serverApp.request(path, { headers })
     if (response.status !== 200) throw new Error(`${label} returned ${response.status}: ${await response.text()}`)
     return await response.json()
   })
@@ -70,8 +69,8 @@ function readJson(label: string, app: ReturnType<typeof InstanceRoutes>, path: s
 
 function expectJsonParity(input: {
   label: string
-  legacy: ReturnType<typeof InstanceRoutes>
-  httpapi: ReturnType<typeof InstanceRoutes>
+  legacy: TestApp
+  httpapi: TestApp
   path: string
   headers: HeadersInit
 }) {