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Author	SHA1	Message	Date
will.anderson	8affb1d6e0	engram tiered storage M2: WAL + checkpoint + crash recovery + legacy import Write-back no-steal buffer pool makes the fsync'd WAL load-bearing (M1 was write-through). Logical WAL with record-granularity page-LSN redo idempotency. Checkpoint = flush dirty pages, fsync store, advance last_checkpoint_lsn, reclaim WAL prefix. One-time snapshot.json import only when store absent; JSON never read as the ongoing store thereafter. Gates: 33/33 M1 (no regression) + 36/36 M2 — replay parity, torn-tail fuzz (every byte offset), checkpoint-crash at all 5 phases, torn-page+WAL redo, legacy-import parity, hebb-survives-crash.	2026-08-11 23:00:20 -05:00
will.anderson	fa47b98d18	engram tiered storage M1: on-disk paged store format + round-trip tests Self-contained paged store (lang/runtime/engram_store.{c,h}): 16KiB slotted pages, u32 TLV self-describing records (forward-compatible), overflow chains, B+-tree id-index + from/to adjacency, page free-list, tombstones, double superblock + crc recovery. Not yet wired to activation (M3). 33/33 tests pass (ASan/UBSan clean); 5k nodes/20k edges round-trip bit-exact incl 768xf32 emb + hebb; store 25MB vs 64MB JSON. Format is final — see design §2.4.	2026-08-11 22:26:05 -05:00
will.anderson	0a72fced28	engram: WAL persistence + integrity hardening + single canonical runtime El SDK CI - dev / build-and-test (pull_request) Failing after 13m17s Details Establish lang/runtime/ as the ONE canonical el runtime (from the active runtime that carries hebb/emb persistence + the new WAL); repoint the el CI publish, engram build, elb default, and in-repo build scripts to it; delete the el-compiler/runtime + lang/releases/ forks; add scripts/check-single-runtime.sh drift guard. Fixes a live prod bug: the el CI published el-runtime-c/-h from the LAGGING el-compiler fork (0 hebb refs), so the shipped soul never persisted Hebbian edge weights — learned co-activation was wiped on every restart. Publishing from canonical ships the stranded 'learning that cannot outlive the process' fix. WAL storage engine + integrity fixes (DELETE->tombstone + store-layer protection, safe data-dir default) ride in behind ENGRAM_WAL (default off = byte-identical to today). Verified: engram elb per-module build clean, WAL gate 66/66, native smoke ok, drift-guard green.	2026-08-11 21:31:37 -05:00

Author

SHA1

Message

Date

will.anderson

8affb1d6e0

engram tiered storage M2: WAL + checkpoint + crash recovery + legacy import

Write-back no-steal buffer pool makes the fsync'd WAL load-bearing (M1 was
write-through). Logical WAL with record-granularity page-LSN redo idempotency.
Checkpoint = flush dirty pages, fsync store, advance last_checkpoint_lsn,
reclaim WAL prefix. One-time snapshot.json import only when store absent;
JSON never read as the ongoing store thereafter.

Gates: 33/33 M1 (no regression) + 36/36 M2 — replay parity, torn-tail fuzz
(every byte offset), checkpoint-crash at all 5 phases, torn-page+WAL redo,
legacy-import parity, hebb-survives-crash.

2026-08-11 23:00:20 -05:00

will.anderson

fa47b98d18

engram tiered storage M1: on-disk paged store format + round-trip tests

Self-contained paged store (lang/runtime/engram_store.{c,h}): 16KiB slotted pages,
u32 TLV self-describing records (forward-compatible), overflow chains, B+-tree
id-index + from/to adjacency, page free-list, tombstones, double superblock + crc
recovery. Not yet wired to activation (M3). 33/33 tests pass (ASan/UBSan clean);
5k nodes/20k edges round-trip bit-exact incl 768xf32 emb + hebb; store 25MB vs 64MB
JSON. Format is final — see design §2.4.

2026-08-11 22:26:05 -05:00

will.anderson

0a72fced28

engram: WAL persistence + integrity hardening + single canonical runtime

El SDK CI - dev / build-and-test (pull_request) Failing after 13m17s

Details

Establish lang/runtime/ as the ONE canonical el runtime (from the active
runtime that carries hebb/emb persistence + the new WAL); repoint the el CI
publish, engram build, elb default, and in-repo build scripts to it; delete
the el-compiler/runtime + lang/releases/ forks; add scripts/check-single-runtime.sh
drift guard.

Fixes a live prod bug: the el CI published el-runtime-c/-h from the LAGGING
el-compiler fork (0 hebb refs), so the shipped soul never persisted Hebbian
edge weights — learned co-activation was wiped on every restart. Publishing
from canonical ships the stranded 'learning that cannot outlive the process'
fix.

WAL storage engine + integrity fixes (DELETE->tombstone + store-layer
protection, safe data-dir default) ride in behind ENGRAM_WAL (default off =
byte-identical to today). Verified: engram elb per-module build clean, WAL
gate 66/66, native smoke ok, drift-guard green.

2026-08-11 21:31:37 -05:00

3 Commits