refactor!: migrate away from bun

- migrate package management to pnpm
- migrate test suite to vitest
- also remove Anify integration

src/index.ts

@@ -7,7 +7,7 @@ import type { QueueName } from "~/libs/tasks/queueName.ts";
 import { onNewEpisode } from "./controllers/internal/new-episode";
 import type { QueueBody } from "./libs/tasks/queueTask";
 
-const app = new OpenAPIHono();
+export const app = new OpenAPIHono<{ Bindings: Env }>();
 
 app.use(maybeUpdateLastConnectedAt);