feat: integrate loading state into player init and remove metadata fetch

static/player/episodes/metadata.ts

@@ -1,31 +0,0 @@
-import { state } from "../state";
-
-/** Fetches episode metadata from API and updates episode-card titles. */
-export const setupEpisodeMetadata = (): void => {
-  const { episodeList } = state.elements;
-  if (!episodeList) {
-    return;
-  }
-
-  fetch(`/api/watch/episodes/${state.episode.malID}/metadata`)
-    .then((res) => res.json())
-    .then((data: Array<{ mal_id: number; title?: string }>) => {
-      data.forEach((item) => {
-        const card = episodeList.querySelector(`[data-episode-id="${item.mal_id}"]`);
-        if (!card) {
-          return;
-        }
-
-        if (item.title) {
-          const titleEl = card.querySelector("[data-episode-title]");
-          if (titleEl) {
-            titleEl.textContent = item.title;
-          }
-        }
-      });
-    })
-    .catch((error) => {
-      window.showToast?.({ message: "Failed to load episode metadata." });
-      console.error("failed to load episode metadata:", error);
-    });
-};