Add IBKR SOXL plugin support

[Pigbibi]

Summary

• update QuantPlatformKit and UsEquityStrategies pins to the merged SOXX 20d volatility gate versions
• add IBKR strategy plugin mount support and render plugin lines in existing Telegram notifications
• sync IBKR_STRATEGY_PLUGIN_MOUNTS_JSON through the Cloud Run env workflow

Architecture

• platform code only passes runtime inputs/plugin signals and notifications
• SOXL allocation and volatility gate logic remains in UsEquityStrategies; shared indicator construction remains in QuantPlatformKit

Tests

• .venv/bin/python -m pytest tests/test_runtime_strategy_adapters.py tests/test_runtime_composer.py tests/test_runtime_config_support.py::test_load_platform_runtime_settings_uses_minimal_group_config tests/test_runtime_config_support.py::test_load_platform_runtime_settings_reads_ibkr_strategy_plugin_mounts tests/test_notifications.py::test_build_translator_supports_chinese -q
• bash tests/test_sync_cloud_run_env_workflow.sh
• .venv/bin/python -m ruff check application/runtime_strategy_adapters.py application/runtime_composer.py application/runtime_dependencies.py application/rebalance_service.py notifications/renderers.py notifications/telegram.py main.py runtime_config_support.py tests/test_runtime_strategy_adapters.py tests/test_runtime_composer.py tests/test_runtime_config_support.py tests/test_notifications.py

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Defer plugin signal loading until execution is allowed

handle_request now loads strategy plugin signals before both the run lock check and the market-open check, so overlapping or market-closed POSTs still execute plugin loading work. When IBKR_STRATEGY_PLUGIN_MOUNTS_JSON points to remote-backed plugin signals (for example GCS-based signal paths), skipped requests can still incur unnecessary I/O/latency and emit plugin-load diagnostics even though no strategy cycle will run. Move plugin loading inside the branch that has acquired the lock and passed the market-open gate.

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