Fix runtime dependency constraints

[Pigbibi]

Summary

• align constraints with current QPK/US/HK strategy pins used by runtime requirements
• remove obsolete Quant*ComboStrategies wrapper constraints after combo strategy migration into domain packages
• improve runtime guard scheduler alias matching and Secret Manager token fallback

Tests

• python3 -m py_compile scripts/cloud_run_runtime_guard.py
• temporary Python assertions covering scheduler alias matching and Secret Manager token fallback
• git diff --check