v7.6.4

Fixed

• Improved General topic test suite — Renamed unprofessional test data, removed redundant @pytest.mark.asyncio decorators (project uses asyncio_mode = "auto"), converted setup to a proper pytest fixture, and added edge case tests for nonexistent topics, topic_id=0, and topic+search filter interaction. Contributed by @tondeaf in #122 (follow-up).

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📋 Full changelog: docs/CHANGELOG.md