refactor!: migrate away from bun

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

src/libs/test/getTestDb.ts

@@ -2,6 +2,6 @@ import { getDb } from "~/models/db";
 
 import { getTestEnv } from "./getTestEnv";
 
-export function getTestDb() {
-  return getDb(getTestEnv());
+export function getTestDb(env?: Cloudflare.Env) {
+  return getDb(env ?? getTestEnv());
 }