refactor: ♻️emoves Env parameter

Removes the `Env` parameter from several functions to simplify their signatures and rely on the global `env` for configuration.

This change reduces the number of arguments passed around, making the code cleaner and easier to maintain.

src/controllers/episodes/getByAniListId/index.ts

@@ -1,6 +1,5 @@
 import { OpenAPIHono, createRoute, z } from "@hono/zod-openapi";
 
-import type { Env } from "~/types/env";
 import { EpisodesResponseSchema } from "~/types/episode";
 import {
   AniListIdQuerySchema,
@@ -37,7 +36,7 @@ const route = createRoute({
   },
 });
 
-const app = new OpenAPIHono<Env>();
+const app = new OpenAPIHono<Cloudflare.Env>();
 
 export function fetchEpisodes(aniListId: number, shouldRetry: boolean = false) {
   return import("./aniwatch")