Telegram bot for the store — catalog, prices, orders

The online store loses requests when the manager is not available. This bot solves the problem — the client selects a product, sees the current price with change dynamics, and immediately sends a request. The manager receives a notification instantly, without manual accounting and spreadsheets.
What the client receives:
— Product catalog with inline buttons directly in Telegram
— Current prices with a change indicator (↑↓)
— Order request → notification to the manager
— Logs in a file — always know what is happening
— Easily customizable for any store
Stack: Python 3.10+, python-telegram-bot, inline keyboards, python-dotenv, systemd/VPS