diff-buf write-buffering + index-root fusion (PSS-backed indexes)#836

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feat/fuse-index-roots

Commits on May 30, 2026

docs: index-root fusion design note (feat/fuse-index-roots)
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feat(writing): index-root fusion — inline index roots into the db-record
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Commits on May 31, 2026

Integrate PSS OP_BUF_V5 write-buffering (JVM, opt-in via pss.opBufSize)
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Fix with-comparator to pass through non-CachedStorage (mem backend)
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Make op-buf-size and branching-factor configurable via :index-config
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Connect-reconcile for create-time-fixed index settings; keep fusion opt-in
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Make merkle-audit and online GC fusion-aware; allow fusion under crypto-hash
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Make crypto-hash sound under op-buf (fold slots into the branch address)
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cljs op-buf-v5 parity: reconstruct/emit :slots, thread comparator, exchange tests
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test: cljs op-buf $remove roundtrip (retract evens, cold-reopen odds survive)
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test: cljs op-buf $replace roundtrip (cardinality-one update → upsert → replace)
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test: cljs op-buf generative soundness (random churn + cold reopens vs reference set)
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cljs merkle audit: cross-platform branch-crypto-uuid/canon/walk + -recompute-merkle-root
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cross-host JVM->cljs: konserve dev local-root + exchange/fress-probe tests
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fix(cljs): datahike.audit/verify-chain now cljs-compiles (require core.async go macro)
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diff-buf: rename op-buf → diff-buf (config key :diff-buf-size, fn diff-buf-size, pss.diffBufSize)
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diff-buf: default ON (256) for new datahike stores
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Rename DIFF_BUF_V5 comment tags to diff-buf
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Commits on Jun 1, 2026

diff-buf: drop storage-carried comparator; pin deps to release/git
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