[momooo15]

The default test run collects 878 tests but none of the 15 package doctest items. Pytest selects the settings in pyproject.toml; the --doctest-modules option in tox.ini is not merged into that configuration. The configured testpaths also only includes tests.

Changes proposed in this pull request:

• Enable --doctest-modules in the active pytest configuration.
• Add humanize to testpaths and enable --pyargs so examples are collected from the same package used by the tests. This works for both editable installations and the installed distribution tested by tox, without mixing source-tree and installed modules.
• Remove the unused [pytest] section from tox.ini so the settings have one source of truth.

Validation on macOS with Python 3.14.5 and pytest 9.1.1:

• Before the change: python -m pytest -q — 878 passed.
• After the change: python -m pytest -q --benchmark-disable --color=no — 893 passed, including all 15 source doctest items.
• tox -e py -- --benchmark-disable --color=no — 893 passed against the installed distribution, with coverage enabled.
• Temporarily replaced the expected output of the first natural_list() example with an incorrect string. The original configuration still passed all 878 tests; the updated configuration reported that doctest as the only failure (1 failed, 892 passed). The temporary edit was restored.
• tox -e py -- tests/test_number.py -k intcomma --benchmark-disable --color=no — 36 passed, 205 deselected; focused test selection still works.
• Translation catalogs were compiled before testing.
• pyproject-fmt --check pyproject.toml, tox-ini-fmt --check tox.ini, and git diff --check passed.

Other platforms and Python versions have not been tested locally.

AI assistance: OpenAI Codex assisted with investigating the configuration, preparing the patch, and running the local checks.