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David Snelling 38b0041464 feat: generation fact log — after-image commit records, dual-written at every commit point 
Every committed generation now also appends a FACT — an after-image
commit record (what each touched entity/relationship became, or a
body-less tombstone for a removal) — to an append-only, crc32c-framed
segment log under _generations/facts/. The before-image history and the
canonical tree remain authoritative; the fact log gives consumers ONE
sequential, self-verifying stream (index heals, incremental replays)
in place of a per-entity directory walk.

- Wire format: positional msgpack facts [generation, timestamp, ops,
  meta, blobHashes]; op = [kind u8, id bin16, record | nil tombstone];
  32-byte segment header (magic, formatVersion, firstGeneration,
  zeroed+verified reserved); length+crc32c frame per fact; zero-padded
  segment names so lexicographic order == generation order; JSON
  manifest with an atomic rename flip, manifest-first rotation.
- Commit protocol: facts append+fsync BEFORE the commit point inside
  the existing durability window, so a crash can only leave the log
  AHEAD of committed truth — open() truncates back (torn tails detected
  by CRC). Absent generation = never committed; a scan can never see an
  uncommitted fact. transact() facts are durable-on-return; single-op
  facts ride the group-commit flush exactly like buffered history. A
  fact-append failure fails the write, loudly — a silent gap would be a
  lie a later replay discovers.
- New public surface: brain.scanFacts() (sequential batches with heal
  telemetry: head/segments/approx up front, per-batch generation range
  + bytes + segment id, loud abort on gaps, summary cross-check) and
  brain.factSegmentPaths() (immutable sealed segments for zero-copy
  consumers; the mutable tail excluded). Exported types CommitFact,
  FactOp, FactScanBatch, FactScanHandle.
- Storage: optional binary raw-byte primitives (appendRawBytes,
  readRawBytes, writeRawBytes, rawByteSize) on StorageAdapter —
  feature-detected; filesystem + memory adapters implement them; an
  adapter without them hosts no fact log. Fact segments are byte-copied
  (never hard-linked) into snapshots. The _generations/facts/ namespace
  is registered as a protected family (rebuildable: false): no sweeper
  or GC may delete under it.
- New crc32c (Castagnoli) utility with RFC known-answer tests.
2026-07-15 10:49:02 -07:00
..
advanced-apis-regression.test.ts feat(8.0)!: flip requireSubtype default to true (BRAINY-8.0-SUBTYPE-CONTRACT § C-1) 2026-06-09 14:58:25 -07:00
aggregation-delete.test.ts feat(8.0): id-normalization (#18) + aggregation min/max delete-safety + RC-safe release 2026-06-20 14:46:40 -07:00
aggregation.test.ts chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase 2026-06-11 14:51:00 -07:00
all-apis-comprehensive.test.ts feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
api-parameter-validation.test.ts feat(8.0)!: flip requireSubtype default to true (BRAINY-8.0-SUBTYPE-CONTRACT § C-1) 2026-06-09 14:58:25 -07:00
batchImportWithRelations.test.ts feat(8.0): reserved-field enforcement — reservedFieldPolicy defaults to throw 2026-06-20 15:37:21 -07:00
brainy-complete.integration.test.ts test(8.0): integration rot pass — 77→17 failures (parallel per-file hardening) 2026-06-17 13:11:41 -07:00
brainy-core.integration.test.ts test(8.0): integration rot pass — 77→17 failures (parallel per-file hardening) 2026-06-17 13:11:41 -07:00
brainy-phase1c-integration.test.ts feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
bun-runtime-test.ts chore(8.0): modernize toolchain + position Bun as a runtime 2026-07-01 09:16:46 -07:00
clear-persistence.test.ts feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
clear-vfs.test.ts docs(8.0): consistency-model concept + snapshots guide — Db API replaces branching docs 2026-06-11 08:37:26 -07:00
cold-graph-connected-8.0.test.ts fix(8.0): never serve a silent [] from find({connected}) on a cold-loaded graph 2026-06-30 09:30:11 -07:00
cortex-compat.test.ts feat(8.0)!: flip requireSubtype default to true (BRAINY-8.0-SUBTYPE-CONTRACT § C-1) 2026-06-09 14:58:25 -07:00
count-invariant.test.ts fix: spine hardening pass 1 (part) — count symmetry, honest partial-load, flush durability, read-fault propagation 2026-07-13 08:50:07 -07:00
count-synchronization.test.ts test(8.0): close brains in afterEach (count-sync, get-relations teardown) 2026-06-16 13:18:14 -07:00
counter-recount.test.ts fix: honest counters — removal never re-reads the removed record + repairIndex recounts and persists all rollups 2026-07-14 11:51:44 -07:00
db-asof-vector-defer.test.ts feat(8.0): #35 part-3 — supply at-gen candidate vectors for the native exact-rerank 2026-06-23 16:50:41 -07:00
db-mvcc.test.ts feat: generation fact log — after-image commit records, dual-written at every commit point 2026-07-15 10:49:02 -07:00
db-temporal.test.ts refactor(8.0): API-surface + quality polish from the readiness audit 2026-06-29 10:04:19 -07:00
delete-full-removal.test.ts fix: full-removal canonical deletes + family-scoped migration gate 2026-07-14 10:11:53 -07:00
entity-confidence-weight.test.ts feat(8.0)!: flip requireSubtype default to true (BRAINY-8.0-SUBTYPE-CONTRACT § C-1) 2026-06-09 14:58:25 -07:00
fact-log-dual-write.test.ts feat: generation fact log — after-image commit records, dual-written at every commit point 2026-07-15 10:49:02 -07:00
find-limits.test.ts feat(8.0)!: flip requireSubtype default to true (BRAINY-8.0-SUBTYPE-CONTRACT § C-1) 2026-06-09 14:58:25 -07:00
find-triple-composition.test.ts test(8.0): asOf() error-path spot-checks + find() triple-composition correctness + scale-bench harness 2026-06-15 11:55:26 -07:00
find-unified-integration.test.ts feat(8.0): id-normalization (#18) + aggregation min/max delete-safety + RC-safe release 2026-06-20 14:46:40 -07:00
find-where-zero.test.ts feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
get-relations-fix.test.ts test(8.0): close brains in afterEach (count-sync, get-relations teardown) 2026-06-16 13:18:14 -07:00
graphIndex-pagination.test.ts chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase 2026-06-11 14:51:00 -07:00
hnsw-rebuild.test.ts feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
hybrid-search-vfs.test.ts feat(8.0)!: delete fork/branch/commit/history/versions — superseded by the Db API 2026-06-10 15:22:47 -07:00
id-normalization.test.ts feat(8.0): id-normalization (#18) + aggregation min/max delete-safety + RC-safe release 2026-06-20 14:46:40 -07:00
ifabsent-upsert-blob-concurrency.test.ts feat: temporal VFS — file content joins the Model-B immutability model 2026-07-10 16:43:48 -07:00
ifrev-concurrent-cas.test.ts fix: ifRev CAS is atomic — the revision check now runs under the commit mutex 2026-07-08 14:53:34 -07:00
lens-consistency.test.ts test: lens-consistency regression — combined vs subtype-only vs canonical ground truth 2026-07-15 09:25:36 -07:00
memory-enhancements-v5.11.0.test.ts test(8.0): integration rot pass — 77→17 failures (parallel per-file hardening) 2026-06-17 13:11:41 -07:00
metadata-only-comprehensive.test.ts feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
metadata-vector-exclusion.test.ts test(8.0): integration rot pass — 77→17 failures (parallel per-file hardening) 2026-06-17 13:11:41 -07:00
migration-7x-to-8x.test.ts fix: 7→8 migration preserves branch-scoped non-entity state instead of deleting it 2026-07-07 16:07:10 -07:00
migration-backup.test.ts fix(8.0): byte-copy _id_mapper/* in the pre-upgrade backup (cor's write-new nuance) 2026-07-02 13:35:43 -07:00
migration.test.ts test(8.0): integration rot pass — 77→17 failures (parallel per-file hardening) 2026-06-17 13:11:41 -07:00
multi-process-safety.test.ts feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
onchange-feed.test.ts feat: brain.onChange — the in-process change feed for every committed mutation 2026-07-10 11:24:31 -07:00
orderby-sort-bug.test.ts feat(8.0)!: flip requireSubtype default to true (BRAINY-8.0-SUBTYPE-CONTRACT § C-1) 2026-06-09 14:58:25 -07:00
read-your-writes-contract.test.ts test: pin the read-your-writes contract under the single writer 2026-07-12 18:24:31 -07:00
readAfterWrite.test.ts chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase 2026-06-11 14:51:00 -07:00
readdir-no-duplicate-replace.test.ts fix: full-removal canonical deletes + family-scoped migration gate 2026-07-14 10:11:53 -07:00
relationship-intelligence.test.ts chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase 2026-06-11 14:51:00 -07:00
remaining-apis.test.ts feat(8.0): reserved-field enforcement — reservedFieldPolicy defaults to throw 2026-06-20 15:37:21 -07:00
restore-nondestructive.test.ts fix: non-destructive, crash-resumable restore 2026-07-12 09:10:35 -07:00
rev-and-ifabsent.test.ts feat(8.0)!: flip requireSubtype default to true (BRAINY-8.0-SUBTYPE-CONTRACT § C-1) 2026-06-09 14:58:25 -07:00
rollback-trapdoor.test.ts fix: honest response when a transaction rollback cannot complete 2026-07-12 12:19:09 -07:00
savebinaryblob-concurrent-rename.test.ts fix: saveBinaryBlob unique tmp suffix + ENOENT swallow on rename 2026-06-09 10:36:02 -07:00
smart-import.test.ts test(8.0): integration rot pass — 77→17 failures (parallel per-file hardening) 2026-06-17 13:11:41 -07:00
storage-batch-operations.test.ts feat(8.0)!: delete fork/branch/commit/history/versions — superseded by the Db API 2026-06-10 15:22:47 -07:00
strict-mode-self-test.test.ts feat(8.0): brain.fillSubtypes migration helper + pre-RC1 gap closure 2026-06-11 10:53:55 -07:00
subtype-and-facets.test.ts chore(8.0): final pre-RC1 sweep — API consistency, named errors, orphans, zero-cast codebase 2026-06-11 14:51:00 -07:00
temporal-vfs.test.ts feat: temporal VFS — file content joins the Model-B immutability model 2026-07-10 16:43:48 -07:00
transact-durability-barrier.test.ts fix: transact durability barrier — committed transactions are durable on return 2026-07-12 08:54:14 -07:00
transact-forward-ref-graph.test.ts fix: transact forward references resolve graph endpoint ints at execute time 2026-07-10 18:06:37 -07:00
update-asymmetry.test.ts feat(8.0)!: flip requireSubtype default to true (BRAINY-8.0-SUBTYPE-CONTRACT § C-1) 2026-06-09 14:58:25 -07:00
vector-recall.test.ts test(8.0): A/B benchmark harness (open leg) — generic corpus+metrics lib, brainy-alone scaling bench, boundary guard, real-embedding recall guard 2026-06-15 15:51:17 -07:00
verb-subtype-and-enforcement.test.ts test(8.0): integration rot pass — 77→17 failures (parallel per-file hardening) 2026-06-17 13:11:41 -07:00
vfs-and-graph-entities.test.ts test(8.0): integration rot pass — 77→17 failures (parallel per-file hardening) 2026-06-17 13:11:41 -07:00
vfs-api-wiring.test.ts feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
vfs-cow-blob-adoption.test.ts fix: recover VFS content blobs stranded by a 7→8 upgrade, in place on open 2026-07-07 12:23:36 -07:00
vfs-debug.test.ts feat(8.0)!: flip requireSubtype default to true (BRAINY-8.0-SUBTYPE-CONTRACT § C-1) 2026-06-09 14:58:25 -07:00
vfs-import-verification.test.ts test(8.0): integration rot pass — 77→17 failures (parallel per-file hardening) 2026-06-17 13:11:41 -07:00
vfs-knowledge-separation.test.ts feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
vfs-performance-v5.11.1.test.ts feat(8.0): API simplification — remove neural()/Db.search, one storage path key, integration→0 2026-06-20 13:31:11 -07:00
vfs-rename-containment.test.ts fix: VFS rename moves the containment edge — no ghost in the old directory 2026-07-15 09:25:21 -07:00
wasm-embeddings.test.ts feat: migrate embeddings to Candle WASM + remove semantic type inference 2026-01-06 12:52:34 -08:00