refactor(sfx.js): use vite imports for npm run build to work properly

src/game/sfx.js

@@ -1,12 +1,22 @@
+// Import audio files as modules so Vite bundles them
+import chestCloseUrl from "../../sfx/sfx_chest_close.wav";
+import chestOpenUrl from "../../sfx/sfx_chest_open.wav";
+import clickUrl from "../../sfx/sfx_click.wav";
+import clockUrl from "../../sfx/sfx_clock.wav";
+import keyUrl from "../../sfx/sfx_key.wav";
+import loseUrl from "../../sfx/sfx_lose.wav";
+import stepUrl from "../../sfx/sfx_step.wav";
+import winUrl from "../../sfx/sfx_win.wav";
+
 const soundFiles = {
-    chestClose: "/sfx/sfx_chest_close.wav",
-    chestOpen: "/sfx/sfx_chest_open.wav",
-    click: "/sfx/sfx_click.wav",
-    clock: "/sfx/sfx_clock.wav",
-    key: "/sfx/sfx_key.wav",
-    lose: "/sfx/sfx_lose.wav",
-    step: "/sfx/sfx_step.wav",
-    win: "/sfx/sfx_win.wav",
+    chestClose: chestCloseUrl,
+    chestOpen: chestOpenUrl,
+    click: clickUrl,
+    clock: clockUrl,
+    key: keyUrl,
+    lose: loseUrl,
+    step: stepUrl,
+    win: winUrl,
 };
 
 const sounds = {};