feat: comando /loop con modos off/track/queue

cogs/music.py

@@ -1128,6 +1128,52 @@ async def autoplay(self, interaction: discord.Interaction) -> None:
             ),
         )
 
+    @app_commands.command(
+        name="loop",
+        description="Cambia el modo de repetición: off / track / queue",
+    )
+    @app_commands.describe(mode="off = sin repetición, track = repetir canción, queue = repetir cola")
+    @app_commands.choices(mode=[
+        app_commands.Choice(name="Off — reproducción normal", value="off"),
+        app_commands.Choice(name="Track — repite la canción actual", value="track"),
+        app_commands.Choice(name="Queue — repite toda la cola", value="queue"),
+    ])
+    async def loop(self, interaction: discord.Interaction, mode: str):
+        """Cambiar modo de loop: off / track / queue"""
+        try:
+            player, error_message = self._require_control_player(interaction)
+            if player is None:
+                return await self._send_error(interaction, error_message)
+
+            loop_map = {
+                "off":   (lavalink.DefaultPlayer.LOOP_NONE,   "Off",   BOT_PRIMARY),
+                "track": (lavalink.DefaultPlayer.LOOP_SINGLE,  "Track", BOT_SUCCESS),
+                "queue": (lavalink.DefaultPlayer.LOOP_QUEUE,   "Queue", BOT_SUCCESS),
+            }
+            loop_val, label, color = loop_map[mode]
+
+            player.set_loop(loop_val)
+            print(f"[LOOP] guild={interaction.guild.id} modo={label}")
+
+            descriptions = {
+                "off":   "Reproducción normal — la cola avanza secuencialmente.",
+                "track": "🔂 Repitiendo la canción actual infinitamente.",
+                "queue": "🔁 Cuando la cola termine, vuelve a empezar desde el principio.",
+            }
+
+            await self._send_embed(
+                interaction,
+                self._build_embed(
+                    interaction,
+                    f"Loop: {label}",
+                    descriptions[mode],
+                    color=color,
+                ),
+            )
+        except Exception as e:
+            print(f"[LOOP] ✗ Error: {e}")
+            await self._send_error(interaction, f"Error: {e}")
+
     @app_commands.command(
         name="play", description="Reproduce una canción (nombre o URL)"
     )
@@ -1456,9 +1502,11 @@ async def nowplaying(self, interaction: discord.Interaction):
                 embed.add_field(
                     name="Autor", value=track.author or "Desconocido", inline=True
                 )
+                loop_label = {0: "", 1: " 🔂 Loop track", 2: " 🔁 Loop queue"}.get(player.loop, "")
+                status = ("En vivo" if track.is_stream else "En reproducción") + loop_label
                 embed.add_field(
                     name="Estado",
-                    value="En vivo" if track.is_stream else "En reproducción",
+                    value=status,
                     inline=True,
                 )
                 embed.add_field(name="Duración", value=duration_label, inline=True)