Как это работает

Telegram ──getUpdates──> BotMux (polling loop per bot)
                            │
                            ├── Management: trackChat() / saveMessage() → SQLite
                            ├── Proxy (push): POST update → Backend URL
                            │                    └── webhook reply → Telegram API
                            ├── Long Poll: enqueue → UpdateQueue (ring buffer)
                            │                  Backend ──getUpdates──> /tgapi/ → dequeue
                            ├── Routing: match rules → send via Target Bot → Telegram
                            │                └── save mapping → route_mappings (SQLite)
                            └── Reverse Route: check mappings → reply via Source Bot
                                                                   (Source-NAT return)

# До (напрямую)
https://api.telegram.org/bot{TOKEN}/sendMessage

# После (через прокси BotMux)
http://localhost:8080/tgapi/bot{TOKEN}/sendMessage