[codex] Add DCA runtime settings

[Pigbibi]

Summary

• Parse DCA_MODE and DCA_BASE_INVESTMENT_USD from runtime settings.
• Map fixed/smart DCA settings to UsEquityStrategies runtime config.
• Bump UsEquityStrategies dependency to 361338f60900182e3be535cd5fd2be2b9a07b422 in requirements and pyproject.

Validation

• python3 -m py_compile runtime_config_support.py strategy_runtime.py tests/test_strategy_runtime.py
• lightweight stub import check for _build_runtime_overrides DCA mapping

Note

• Full local pytest run is blocked on this VPS by missing pytest/quant_platform_kit dependencies.

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Add DCA vars to Cloud Run env sync

When DCA settings are configured through this repo's Cloud Run deploy workflow, these new variables won't be propagated: I checked .github/workflows/sync-cloud-run-env.yml, and it only imports GitHub vars that are listed in the job env: block and then passed through add_optional_env; DCA_MODE and DCA_BASE_INVESTMENT_USD are missing from both places. As a result, setting those repository variables for nasdaq_sp500_smart_dca or ibit_smart_dca leaves Cloud Run running with the strategy defaults/old environment after deploy, so the new runtime controls added here do not take effect in the managed deployment path.

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