fix(hashline): fix batch edit line-shift by sorting edits descending#333
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fix(hashline): fix batch edit line-shift by sorting edits descending#333
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When processing multiple edits in a single hashline_edit call, ascending sort caused line-shift bugs: deleting a lower line shifted higher-line indices, making subsequent edits target wrong positions.
Fix: sort edits descending (highest line first) so lower-line edits never shift higher lines that were already processed.
Adds 4 regression tests covering delete+set, range-delete+set, multiple deletions, and insert_after+set combinations.
Fixes #326