fix: rocksdb DeleteSync

[songgaoye]

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PR checklist

• Tests written/updated
• Changelog entry added in .changelog (we use unclog to manage our changelog)

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Note

Fixes error handling in rocksdb.go

• DeleteSync now returns the underlying error from db.db.Delete(db.woSync, key) rather than nil, ensuring delete failures are surfaced to callers.

^{Written by Cursor Bugbot for commit 97d6bec. This will update automatically on new commits. Configure here.}

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 78.41%. Comparing base (fb4f703) to head (97d6bec).
⚠️ Report is 74 commits behind head on main.

Files with missing lines	Patch %	Lines
rocksdb.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #281      +/-   ##
==========================================
+ Coverage   76.80%   78.41%   +1.60%     
==========================================
  Files          23       23              
  Lines        2048     1700     -348     
==========================================
- Hits         1573     1333     -240     
+ Misses        403      294     -109     
- Partials       72       73       +1     

Files with missing lines	Coverage Δ
rocksdb.go	73.45% <0.00%> (+1.39%)	⬆️

... and 21 files with indirect coverage changes

Files with missing lines	Coverage Δ
rocksdb.go	73.45% <0.00%> (+1.39%)	⬆️

... and 21 files with indirect coverage changes

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