CRDT for documents (2/6): Automerge engine core + full upstream interop parity - #1750

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gearnode wants to merge 67 commits into

automerge/1-prototype-bringupfrom

automerge/2-engine-core-parity

Commits on Aug 8, 2026

Preserve text following horizontal rules

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557b83a

Commits on Aug 9, 2026

Extend native and reference Automerge backends

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7830893
Expand public Automerge API for parity

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fe8e024
Add upstream Automerge parity test suite

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5cd4caa
Add Automerge parity tooling and benchmarks

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e6c1e2c
Document Automerge parity plan

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8863a5a
Record author's prior change in change dependencies

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c4e50d5
Expose list element object replacement

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c5ae7be
Cover Rust core-model conflict and history parity

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e1aa61b
Cover Rust list-indexing, rollback, and delete-actor parity

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421e141
Cover empty-commit and op-tree boundary save/load parity

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6c19c09
Resolve list-index conflicts against all visible values

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6599bb0
Cover Rust list counter deletion parity

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1c1db76
Cover Rust read-only synchronization parity

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7b9ca5f
Cover Rust batch-insertion parity

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90135b3
Cover Rust incremental orphan-load rejection

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a6072d6
Fix native sync message generation edge cases

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f3fab7f
Cover previously deferred read-only sync parity

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51f9cd1
Cover Rust rich-text span parity

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dc6cd17
Include block markers in the rich-text index space

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66c6ed3
Cover block-adjacent mark and splice parity

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812288a
Normalize splice positions inside UTF-16 characters

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c887260
Cover UTF-16 mid-character splice parity

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c425d0c
Preserve expanding marks across boundary replacements

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e78f5ec
Cover mark-boundary splice parity

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bdc0b62
Expose active text marks and historical marks

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f158d71
Cover active-mark reads and record expansion defect

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bdc86ad
Cover branchy synchronization convergence

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f6cd639
Cover JavaScript Date interoperability in maps and lists

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3965069
Cover reusing JavaScript dates across documents

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3fe0b7e
Expose document statistics

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5956470
Cover document statistics parity

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5571974
Add current-state materialization patches

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6a22995
Cover current-state materialization parity

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d6428af
Cover remaining current-state materialization cases

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350d336
Add diff patches between two frontiers

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6e09542
Cover diff reversal parity

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5ffdf25
Cover large list diff index parity

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2c2a61e
Add grapheme-aware update_text with Rust parity

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4de11d9
Index text operations by UTF-16 code units

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cdf5781
Diff text sequences by UTF-16 with deletions

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da8e0ac
Emit mark patches from text diffs

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25620fa
Add incremental diff cursor and patch log

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ea832ec
Carry marks on text splice patches

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56bcbf7
Derive mark patches from mark operations

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51a4078
Expand marks across same-anchor insertions

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cc2dfe9
Cover cross-page mark patch isolation

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f423b30
Add update_spans for text and marks

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41a2ed9
Support blocks in update_spans

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c3f4706
Cover batch-insert patch generation

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7804f80
Add historical spans and block diff materialization

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a5aab3d
Cover JavaScript text behaviors

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84d7486
Cover JavaScript block behaviors

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efec1da
Cover transaction rollback parity

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82c789e
Cover incremental mark patch loading

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056f07c
Cover list-range values and conflicts

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23367d9
Add string-to-text load migration

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b9117d9
Add historical text cursors

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2e1e75c
Cover clock ancestry and scope internal doctests

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745251d
Cover whole-document first sync response

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7f529c0
Scope legacy sync out and cover change encoding

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7ef435c
Derive mark patches from operations, not state

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bfd08e1
Scope internal-only upstream cases

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a58d144
Cover loading current state from a fixture

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d09c6cc
Cover unmarked insertion after a block span

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2de0183
Expose bloom, isolation, and save reference FFIs

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d8dc5ad
Reach complete V2 interoperability parity

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c319204