fix: 단어 생성시 메모 빈칸 이슈 수정

[goodaseul]

단어 생성시 메모에 빈칸이 없을 때도 filter 메모있음 으로 분류가 되는 이슈를 수정

Summary by CodeRabbit

• Bug Fixes
  • Fixed handling of empty memo fields when uploading words to ensure consistent data storage.

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Project	Deployment	Review	Updated (UTC)
stack-plus	Ready	Preview, Comment	Jan 19, 2026 11:11am

[coderabbitai]

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📝 Walkthrough

Walkthrough

The uploadWords function in src/api/words.ts now normalizes the memo field before insertion. Empty strings are converted to null after trimming, ensuring consistent null representation instead of storing empty values.

Changes

Cohort / File(s)	Summary
Memo normalization logic src/api/words.ts	Added normalization for memo field in uploadWords: empty strings after trim are converted to null; otherwise memo is preserved as-is during word insertion

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A memo once empty now sleeps as null,
Trimmed strings find their rest,
No more blank whispers in the database,
Just tidy, normalized best!

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