chore: tighten package hygiene and packaging smoke coverage#377

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liujuanjuan1984 merged 2 commits intomainfrom

chore/367-a2a-python-best-practices-review

Apr 2, 2026

Commits on Apr 2, 2026

chore: remove unused dependency and add package NullHandler
liujuanjuan1984
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chore: publish py.typed and strengthen smoke test
liujuanjuan1984
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