fix(fts): deterministic top-k tiebreak for tied scores - #7846

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sbrunk:fts-deterministic-topk-tiebreak

Commits on Aug 11, 2026

fix(fts): deterministic top-k tiebreak (score DESC, row_id ASC)
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aab73ab
fix(fts): carry the top-k tiebreak through the segment and flat merges
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d444595
fix(fts): retain top-k candidates the WAND walk cannot rank
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d8e6f0d
fix(fts): sort element documents by doc_index in the plan top-k
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af3c511
perf(fts): bound and parallelize the cross-partition tie merge
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bf86b94
test(fts): cover element-document ties end to end
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2a45266
perf(fts): cache element coordinate columns per partition
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6f56079
fix(fts): bound the address-ordered tie band
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993dc04
docs(fts): correct three comments about the top-k tiebreak
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c92f250
style(fts): unwrap a stray-whitespace assertion message
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0746423
test(fts): cover the flat-only leaf top-k tiebreak
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ce23e32
docs(fts): describe what a flat-only scan actually interleaves
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eb66f95