feat(routes): sync model globals via config API, fix log message

- Add models.text, models.evil, models.japanese to config/set globals sync
- Fix language toggle log to show actual model name instead of hardcoded string

bot/routes/language.py

@@ -27,7 +27,7 @@ def toggle_language_mode():
         globals.LANGUAGE_MODE = "japanese"
         new_mode = "japanese"
         model_used = globals.JAPANESE_TEXT_MODEL
-        logger.info("Switched to Japanese mode (using Llama 3.1 Swallow)")
+        logger.info(f"Switched to Japanese mode (using {model_used})")
     else:
         globals.LANGUAGE_MODE = "english"
         new_mode = "english"