[codex] Promote US combo live dependency

[Pigbibi]

Summary

• Update us-equity-strategies pin to the merged live-core us_equity_combo implementation.
• Remove us_equity_combo_core from the IBKR live/selectable rollout expectations.
• Add regression coverage that rejects the shadow profile as a direct runtime target.

Validation

• PYTHONPATH=/Users/lisiyi/Projects/InteractiveBrokersPlatform:/Users/lisiyi/Projects/UsEquityStrategies/src:/Users/lisiyi/Projects/HkEquityStrategies/src:/Users/lisiyi/Projects/QuantPlatformKit/src python3 -m pytest tests/test_runtime_config_support.py -q
• uv run pytest tests/test_runtime_config_support.py -q
• uv lock --check
• python3 -m py_compile runtime_config_support.py strategy_registry.py
• git diff --check

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[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Add runtime handling for promoted combo inputs

With this dependency bump, us_equity_combo is now exposed as the live profile and the updated status coverage expects it to run as current_holdings+russell_snapshot, but LoadedStrategyRuntime.evaluate() still only dispatches feature snapshots, market_data, market_history, or portfolio+derived/benchmark inputs before raising Unsupported required_inputs for anything else. When operators select the newly promoted us_equity_combo target, it will be accepted by config/status but fail at signal computation unless the platform builds the Russell snapshot/current-holdings inputs or keeps the profile out of the live allowlist.

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