fix(core): use index-based tracking in BatchDeleter to fix progress stalls#7401

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TennyZhuang wants to merge 3 commits intomainfrom

fix/batch-deleter-progress-tracking

Commits on Apr 17, 2026

fix(core): use index-based tracking in BatchDeleter to fix progress stalls

TennyZhuang
and
claude
committed
fix(core): restore buffer on delete_batch error and handle duplicate entries

TennyZhuang
and
claude
committed
fix(core): retain single-item buffer in BatchDeleter on delete_once error

TennyZhuang
and
claude
committed