feat(merge): legacy promotion path + body-col schema evolution#6423

Merged

g-talbot merged 6 commits into

gtt/parquet-streaming-basefrom

gtt/legacy-promotion-and-schema-evo

May 18, 2026

Commits on May 18, 2026

fix(merge): adapter rejects unsorted input; consumer honors SS-3; stronger test verifiers

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feat(merge): legacy-prefix promotion path + schema-evolution body cols

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style(indexing): re-fmt parquet_merge_executor to latest nightly rustfmt

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fix(merge-executor): route promotion merges through execute_merge_operation

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docs(adr): track legacy promotion planner gap as GAP-011

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docs(adr): track download-vs-streaming merge executor gap as GAP-012

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