Fix #7: GUI

[htlin222]

Closes #7

Implemented automatically by Claude.

[htlin222]

@claude unit test this

[htlin222]

Here's the summary:

Unit Test Results: 97/97 passing

Module	Coverage	Tests
extraction_utils.py	100%	10 tests
validate_extraction.py	67% (core logic fully covered, main() CLI excluded)	39 tests
validate_skills.py	68% (parsing + validation covered, main() CLI excluded)	26 tests
bib_to_csv.py	25% (extract_fields covered, file I/O main() excluded)	7 tests
project_status.py	50% (stage detection + status logic covered, print/CLI excluded)	11 tests

What was created:

• tooling/python/pyproject.toml — added pytest + pytest-cov dev dependencies
• tooling/python/tests/conftest.py — shared fixtures
• tooling/python/tests/test_extraction_utils.py — field name parsing
• tooling/python/tests/test_validate_extraction.py — CSV validation engine (6 check types)
• tooling/python/tests/test_bib_to_csv.py — BibTeX field extraction
• tooling/python/tests/test_validate_skills.py — SKILL.md structure validation
• tooling/python/tests/test_project_status.py — project stage detection

Run with: cd tooling/python && uv run pytest tests/ -v

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⏱️ 219s | 💰 $0.9453 | 🔄 20 turn(s)