feat: use Wrangler auto-generated env variables

Summary:

Test Plan:

src/controllers/episodes/index.ts

@@ -1,6 +1,7 @@
 import { OpenAPIHono, createRoute, z } from "@hono/zod-openapi";
 
 import { fetchFromMultipleSources } from "~/libs/fetchFromMultipleSources";
+import type { Env } from "~/types/env";
 import {
   AniListIdQuerySchema,
   ErrorResponse,
@@ -42,13 +43,17 @@ const route = createRoute({
   },
 });
 
-const app = new OpenAPIHono<HonoEnv>();
+const app = new OpenAPIHono<Env>();
 
 app.openapi(route, async (c) => {
   const aniListId = Number(c.req.param("aniListId"));
 
   const episodes = await fetchFromMultipleSources([
-    () => getEpisodesFromAnify(JSON.parse(c.env.ENABLE_ANIFY), aniListId),
+    () =>
+      getEpisodesFromAnify(
+        JSON.parse((c.env?.["ENABLE_ANIFY"] ?? "true") as string),
+        aniListId,
+      ),
     () => getEpisodesFromConsumet(aniListId),
   ]);