feat(auth): add verbose logging for API key extraction

- Improve debugging by logging the provided and extracted API keys
  when verbose mode is enabled in the environment configuration.

src/ltProxyAuth.ts

@@ -8,9 +8,17 @@ import { Env } from './env.ts';
 export const authMiddleware: Middleware = async (ctx, next) => {
     const key = ctx.query.apiKey;
 
+    if (Env.verbose) {
+        console.debug('API key:', key);
+    }
+
     // Support both ?apiKey=... and form body with apiKey=...
     const extractedKey = Array.isArray(key) ? key[0] : key;
 
+    if (Env.verbose) {
+        console.debug('Extracted API key:', extractedKey);
+    }
+
     if (!extractedKey || !Env.apiKeys.includes(extractedKey)) {
         return new Response('Forbidden – Invalid API key', { status: 403 });
     }