feat: Add /reset command for re-testing registration

This commit introduces a `/reset` command that allows users to clear their registration status. This is useful for testing the registration conversation flow multiple times without needing to restart the bot.

The command works by removing the user's chat ID from the in-memory set of registered users and then displaying the main menu again.

app/main.py

@@ -18,7 +18,7 @@ from telegram.ext import Application, Defaults, CommandHandler, ContextTypes
 # --- IMPORTAR HABILIDADES ---
 from modules.flow_builder import load_flows
 from modules.logger import log_request
-from modules.database import chat_id_exists  # Importar chat_id_exists
+from modules.database import chat_id_exists, deregister_user
 from modules.ui import main_actions_keyboard
 
 from modules.rh_requests import vacaciones_handler, permiso_handler
@@ -105,6 +105,17 @@ async def menu_principal(update: Update, context: ContextTypes.DEFAULT_TYPE):
     )
 
 
+async def reset_command(update: Update, context: ContextTypes.DEFAULT_TYPE):
+    """Permite a un usuario eliminar su registro para reiniciar el flujo."""
+    user = update.effective_user
+    log_request(user.id, user.username, "reset", update.message.text)
+
+    deregister_user(user.id)
+    await update.message.reply_text("🔄 Tu registro ha sido eliminado. Ahora puedes volver a registrarte.")
+    # Llamar a menu_principal para mostrar el menú actualizado
+    await menu_principal(update, context)
+
+
 async def post_init(application: Application):
     # Mantén los comandos rápidos disponibles en el menú de Telegram
     await application.bot.set_my_commands(
@@ -146,6 +157,7 @@ def main():
     app.add_handler(CommandHandler("start", menu_principal))
     app.add_handler(CommandHandler("help", menu_principal))
     app.add_handler(CommandHandler("links", links_menu))
+    app.add_handler(CommandHandler("reset", reset_command))
 
     # Handlers de módulos
     app.add_handler(vacaciones_handler)