Fix: resolve AMBEServer host explicitly, strip whitespace/quotes

Adds socket.gethostbyname() to resolve DNS or validate IP before
using it in sendto(). Also strips whitespace and quotes from host
value to prevent hidden characters from config parsing.

tts_engine.py

@@ -177,8 +177,18 @@ def _parse_ambe_response(data):
 
 
 def _encode_ambe_ambeserver(wav_path, ambe_path, host, port):
+    host = host.strip().strip('"').strip("'")
     logger.info('(TTS-AMBESERVER) Conectando a AMBEServer %s:%d', host, port)
 
+    try:
+        _resolved_ip = socket.gethostbyname(host)
+        if _resolved_ip != host:
+            logger.info('(TTS-AMBESERVER) Host %s resuelto a %s', host, _resolved_ip)
+        host = _resolved_ip
+    except socket.gaierror as e:
+        logger.error('(TTS-AMBESERVER) No se puede resolver el host "%s": %s', host, e)
+        return False
+
     try:
         sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
         sock.settimeout(5.0)