Add EURUSD pair with dynamic pair info lookup. Telegram bot now shows
4 scan buttons: EUR/USD 15M, EUR/USD 1H, USD/JPY 15M, USD/JPY 1H.
Each indicator displays directional arrows in the message output.
Price formatting adapts per pair (5dp for EUR, 3dp for JPY).
Introduces telegram_bot.py: python-telegram-bot v20+ async bot that
presents a persistent Scan Signal inline button. Each press fetches a
live USD/JPY signal via SignalAggregator and formats it with emoji,
MTF breakdown, top bull/bear reasons, and warnings. STRONG_BUY /
STRONG_SELL signals additionally render the full trade setup (entry,
SL, TP1, TP2, RR). Adds python-telegram-bot>=20.0 to requirements.txt.
Harwinder