Show TQQQ delever allocation in notifications

[Pigbibi]

Summary

• include TQQQ retained / QQQM redirected ratios in volatility-delever notifications
• pass the new allocation fields through execution metadata and signal snapshots
• pin UsEquityStrategies to fdd39ef0313181bee9083319b87b7175c32b364d

Validation

• python -m py_compile notifications/renderers.py notifications/telegram.py decision_mapper.py application/signal_snapshot.py
• direct zh/en TQQQ risk-control render check passed
• full notification tests could not run locally because pandas is not installed on this VPS