Align package version declarations

[Pigbibi]

Summary

• align setup.py and quant_platform_kit.__version__ with pyproject.toml (0.7.34)
• add a regression test that fails when package version declarations drift

Tests

• slowrun bash -lc ".venv/bin/python -m pytest tests/test_package_version.py -q && .venv/bin/ruff check setup.py src/quant_platform_kit/__init__.py tests/test_package_version.py"

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Use a Python 3.9-compatible TOML parser

This test module imports tomllib unconditionally, but the package still advertises requires-python = ">=3.9" in pyproject.toml and Ruff targets py39. On Python 3.9 or 3.10, collecting this new test fails immediately with ModuleNotFoundError: No module named 'tomllib', so the test suite breaks for supported interpreters; use a fallback such as tomli or avoid TOML parsing here.

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