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M-INTEROCEPTION P1: two-threshold consolidation layer (ENGRAM_CONSOLIDATION, default OFF)

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The co-activation accrual already works (hebb is an EWMA over co-firing); what
was missing is the promotion layer from design §9 that turns accrual into
durable structure. This adds it on top, entirely behind ENGRAM_CONSOLIDATION so
the OFF path is byte-identical to trunk.

CONNECTION threshold ("connection IS consolidation"): when a strongly-firing
InternalStateEvent is created (salience >= ENGRAM_CONSOL_CONN_MIN, default 0.6),
wire hebbian-associate edges from it to the top-K working-memory nodes active at
that instant (ENGRAM_CONSOL_WM_TOPK, default 5), provenance-tagged
"consolidated-from-ISE" and dedup-guarded. A sub-threshold ISE forms nothing (a
shower thought) and drifts out at the existing 48h prune.

PERMANENCE threshold (rare): engram_consolidate_permanence(node) marks a node
whose rehearsed ACT-R base-level clears ENGRAM_CONSOL_PERM_MIN durable via a
reversible metadata marker; engram_prune_telemetry then exempts it (gated, so no
trunk node is ever affected). Idempotent, no double-promote.

Thresholds are env-tunable for A/B without a rebuild.

MEASURED on a copy (throwaway HOME):
- Headline accrual curve (flag OFF, pure trunk) over N co-activations of a wired
  pair — hebb_max: N=1 -> 1e-4 (=ETA), N=100 -> 0.010, N=1625 -> 0.150
  (LINK_MIN, where an unwired pair consolidates), N=3000 -> 0.259; tracks the
  analytic EWMA 1-0.9999^N within measurement noise (co-activation P~1).
- Strong ISE wired 2 edges to exactly the wm_top nodes (hebb-a, hebb-b); weak
  ISE formed 0; edges carry the reversible provenance marker.
- Promoted node survived the 48h prune (2->1 nodes); ephemeral ISE swept.
- Flag OFF: ISE creation added 0 edges, permanence returned 0 (no-op).
ASan+UBSan clean.
This commit is contained in:
Will Anderson
2026-08-12 23:36:24 -05:00
parent c20cb3b97c
commit 5f6ce5ca1f
5 changed files with 389 additions and 0 deletions
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lang/runtime/el_runtime.h
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@@ -622,6 +622,7 @@ el_val_t engram_search_json(el_val_t query, el_val_t limit);
el_val_t engram_scan_nodes_json(el_val_t limit, el_val_t offset);
el_val_t engram_scan_nodes_by_type_json(el_val_t node_type, el_val_t limit, el_val_t offset);
el_val_t engram_scan_nodes_emb_json(el_val_t limit, el_val_t offset);
el_val_t engram_consolidate_permanence(el_val_t node_id);
el_val_t engram_neighbors_json(el_val_t node_id, el_val_t max_depth, el_val_t direction);
el_val_t engram_activate_json(el_val_t query, el_val_t depth);
el_val_t engram_stats_json(void);