cihai

Update the unihan-etl dependency in cihai to the latest version with atomic, well-documented commits. This skill should be used when the user asks to "update unihan-etl", "bump unihan-etl", "upgrade unihan-etl", "check for unihan-etl updates", "update unihan-etl dependency", or mentions updating the unihan-etl dependency in cihai. Covers discovery, package bump, code adaptation, test updates, and CHANGES entries as separate commits.

Use when the user asks to "update dependency", "bump dependency", "upgrade dep", "update unihan-etl", "bump unihan-etl", "update cihai dep", or wants to update a Python package dependency with atomic commits, upstream impact analysis, and PR creation. Handles both simple (no code changes) and complex (breaking API changes) updates.