Remove leftover ShelfDTO import and unused variable

[leodvincci]

Remove leftover ShelfDTO import and unused variable

Type: Cleanup / Boundary
Priority: P2

Summary

BookDomainRepositoryImpl still imports ShelfDTO and declares ShelfDTO shelfDTO = null;.

Impact

Cross-context coupling remains; dead code.

Evidence

BookDomainRepositoryImpl.java line 12 and line 39.

import com.penrose.bibby.library.stacks.shelf.api.dtos.ShelfDTO;
// ...
ShelfDTO shelfDTO = null;

Proposed Fix

Remove import and variable.

Acceptance Criteria

• rg "ShelfDTO" src/main/java/com/penrose/bibby/library/cataloging/book/infrastructure/repository/BookDomainRepositoryImpl.java returns no results.

Expected

No Shelf module types are referenced in BookDomainRepositoryImpl.

Actual

ShelfDTO is still imported and an unused variable remains.