refactor: expose unified crypto strategy entrypoints

[Pigbibi]

Summary

• add manifest-backed unified entrypoints for crypto live profiles
• keep legacy math reuse inside CryptoStrategies while moving platform-facing logic to contracts
• update auto-optimization guards and regression tests for the new boundary files

Test Plan

• python3 -m py_compile scripts/prepare_auto_optimization_pr.py tests/test_prepare_auto_optimization_pr.py
• python3 -m ruff check scripts/prepare_auto_optimization_pr.py tests/test_prepare_auto_optimization_pr.py
• source /tmp/ues-strategy-contract-venv13/bin/activate && PYTHONPATH=src:/Users/lisiyi/Projects/QuantPlatformKit/src python -m unittest tests.test_entrypoints tests.test_prepare_auto_optimization_pr -v