Add migrator tool#358

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caco3 wants to merge 36 commits into

zevv:v1.5.0-rc2from

caco3:add-migrator-tool

Commits on Apr 3, 2026

adds DB documentation and an initial migrator
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add tool to build DUC for any of the available backends.
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added script to test indexing with the different backends
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added readme
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fix migrator build errors: kccurfirst→kccurjump, mdb_open macro conflict, comment warning
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migrator: open tkrzw with RECORD_COMP_ZSTD to match duc's default compression
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added migration testscript
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added readme
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migrator: fix tkrzw offset_width mismatch and kyotocabinet double-free in iterator
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renamed file
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updated script
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migrator: fix sqlite3 key binding — use bind_text to match duc's db-sqlite3.c
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.
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updated timeout
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tkrzw: cap num_buckets=131072 to avoid 100M-bucket default (476 MB sparse file)
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revert: db-tkrzw.c num_buckets change — do not touch duc core
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update test script
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migrator: add progress output — scan/copy status lines with flush
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.
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migrator: add count() per backend; replace verbose output with ASCII progress bar
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migrator: warn (not error) if fix-crashes-on-indexing not in ancestry; raise TIMEOUT to 300s
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migrator: remove branch ancestry check from Makefile
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fix migrator
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show warning
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.
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revert: restore all duc source files to master state — add-migrator-tool must not touch duc core
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added copyright to scripts
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update readme
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docs: move db-formats.md to repo root; update references in migrator/README.md and root README.md
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docs: rename db-formats.md to DB-FORMATS.md; update all references
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docs: remove DB-FORMATS.md reference from root README
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update doc
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update doc
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update doc
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Commits on Apr 4, 2026

revert: restore duc core files to v1.5.0-rc2 state — add-migrator-tool must not touch duc core
CaCO3
committed