feat: enhance configuration management and add error handling

package.json

@@ -16,15 +16,21 @@
     "@discordjs/opus": "^0.10.0",
     "@discordjs/voice": "^0.19.1",
     "@snazzah/davey": "^0.1.10",
+    "class-transformer": "^0.5.1",
+    "class-validator": "^0.15.1",
     "discord.js-selfbot-v13": "^3.7.1",
+    "dotenv": "^17.4.2",
     "express": "^5.2.1",
     "fluent-ffmpeg": "^2.1.3",
+    "helmet": "^8.1.0",
     "libsodium-wrappers": "^0.8.2",
+    "p-retry": "^6.2.0",
+    "pino": "^9.4.0",
+    "pino-http": "^11.0.0",
     "prism-media": "2.0.0-alpha.0",
     "sodium-native": "^4.3.2",
     "ws": "^8.20.1",
-    "pino": "^9.4.0",
-    "p-retry": "^6.2.0"
+    "zod": "^4.4.3"
   },
   "devDependencies": {
     "@biomejs/biome": "latest",