Show dynamic volatility thresholds in Telegram

[Pigbibi]

Summary

• render TQQQ volatility risk-control Telegram lines with effective dynamic thresholds
• add SOXL dynamic volatility reason translations in zh/en
• cover dynamic threshold details in notification tests

Verification

• PYTHONPATH=/home/ubuntu/Projects/QuantPlatformKit/src python -m pytest tests/test_signal_snapshot.py -q
• PYTHONPATH=/home/ubuntu/Projects/QuantPlatformKit/src python - <<'PY' ... direct render_heartbeat_notification smoke test
• python -m py_compile notifications/telegram.py notifications/renderers.py application/signal_snapshot.py tests/test_notifications.py tests/test_signal_snapshot.py

Note: full tests/test_notifications.py collection needs local us_equity_strategies pandas dependencies that are not installed on this VPS.