Refactor v2 session events as schemas (#24512)

packages/opencode/src/server/routes/instance/httpapi/server.ts

@@ -64,6 +64,7 @@ import { questionHandlers } from "./handlers/question"
 import { sessionHandlers } from "./handlers/session"
 import { syncHandlers } from "./handlers/sync"
 import { tuiHandlers } from "./handlers/tui"
+import { v2Handlers } from "./handlers/v2"
 import { workspaceHandlers } from "./handlers/workspace"
 import { instanceContextLayer, instanceRouterMiddleware } from "./middleware/instance-context"
 import { workspaceRouterMiddleware, workspaceRoutingLayer } from "./middleware/workspace-routing"
@@ -115,6 +116,7 @@ const instanceApiRoutes = HttpApiBuilder.layer(InstanceHttpApi).pipe(
     providerHandlers,
     sessionHandlers,
     syncHandlers,
+    v2Handlers,
     tuiHandlers,
     workspaceHandlers,
   ]),