Fix Firstrade package metadata

[Pigbibi]

Summary

• align requires-python with the current UsEquityStrategies dependency
• declare flat-layout modules and packages explicitly for setuptools editable builds
• update Ruff target to Python 3.11

Tests

• env -u VIRTUAL_ENV PYTEST_DISABLE_PLUGIN_AUTOLOAD=1 PYTHONPATH=.:../QuantPlatformKit/src:../UsEquityStrategies/src timeout 180 uv run --with pytest --with pandas --with numpy --with requests --with flask --with pytz --with pandas_market_calendars --with google-auth python -m pytest tests/test_runtime_config_support.py tests/test_monitor_dispatcher.py tests/test_request_handling.py tests/test_decision_mapper.py tests/test_execution_service.py

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Add Flask to the packaged app dependencies

With this commit main becomes part of the installable distribution, but main.py imports from flask import ... at module import time while the pyproject.toml dependencies still do not install Flask. In a fresh environment that follows the README’s pip install -e . flow or installs the wheel and then imports main/runs gunicorn main:app, the app fails immediately with ModuleNotFoundError, so the package metadata needs to declare Flask when exposing this entrypoint.

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