Record completed test run in TASK.md

[brothercorvo]

Motivation

• Ensure the project task list documents that the full test suite was executed as part of the application testing work.
• Provide a clear audit trail on 2026-01-12 that the tests were run and verified to help future maintenance and sign-off.

Description

• Add a checklist item to TASK.md under the 2026-01-12 section marking the test suite run as completed.
• This is a documentation-only change and does not modify application source code.

Testing

• Created a virtual environment and installed dependencies, then ran venv_linux/bin/python -m pytest.
• Test run results: 179 passed, 5 skipped (with 105 warnings), and the run completed successfully.

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Codex Task