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fix(recall): deduplicate engram nodes by ID across activation and search passes

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Thread a seen-node-ID exclusion set from engram_compile() through to
session_preload in handle_chat, preventing the same high-salience nodes
(identity, recent memories) from appearing 2-3x in the system prompt.

Changes:
- Add id_in_seen(), add_to_seen(), engram_extract_ids() helpers that
  maintain a comma-delimited seen-ID accumulator (EL has no Set type)
- In engram_compile(): after merging all topic/entity/recall pools, extract
  node IDs from merged_nodes and publish via state_set(engram_compile_seen_ids)
- In handle_chat(): read seen_ids from state after engram_compile() returns,
  then check id_in_seen() before emitting each session_preload bullet
  (profile x3, work x2, project x2, summary x1 — all 8 candidate nodes guarded)

Nodes already present in the compiled engram context are skipped in preload,
eliminating 3000-3500 token repetition on first-message turns.
This commit is contained in:
Will Anderson
2026-06-22 14:06:04 -05:00
parent 21f248a33a
commit 9e178d8371
1 changed files with 58 additions and 8 deletions
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chat.el
+58 -8
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@@ -265,6 +265,39 @@ fn engram_nodes_merge(a: String, b: String) -> String {
return engram_dedup_nodes("[" + ai + "," + bi + "]")
}
// id_in_seen — check if node_id appears in the comma-delimited seen accumulator.
// Pads both sides with commas to avoid false substring matches.
fn id_in_seen(node_id: String, seen: String) -> Bool {
if str_eq(node_id, "") { return false }
if str_eq(seen, "") { return false }
return str_contains("," + seen + ",", "," + node_id + ",")
}
// add_to_seen — append node_id to the comma-delimited seen accumulator.
fn add_to_seen(seen: String, node_id: String) -> String {
if str_eq(node_id, "") { return seen }
if str_eq(seen, "") { return node_id }
return seen + "," + node_id
}
// engram_extract_ids — extract all non-empty "id" fields from a JSON node array
// into a comma-delimited string for use with id_in_seen / add_to_seen.
fn engram_extract_ids(nodes_json: String) -> String {
if str_eq(nodes_json, "") { return "" }
if str_eq(nodes_json, "[]") { return "" }
let total: Int = json_array_len(nodes_json)
if total == 0 { return "" }
let ids: String = ""
let i: Int = 0
while i < total {
let node: String = json_array_get(nodes_json, i)
let nid: String = json_get(node, "id")
let ids = if str_eq(nid, "") { ids } else { add_to_seen(ids, nid) }
let i = i + 1
}
return ids
}
fn engram_compile(intent: String) -> String {
// Issue 1: decompose multi-topic messages into sub-queries.
let topics: String = engram_split_topics(intent)
@@ -347,6 +380,11 @@ fn engram_compile(intent: String) -> String {
let merged: String = engram_nodes_merge(merged, recall_boost)
let merged_nodes: String = merged
// Dedup fix: publish seen node IDs so downstream callers (session_preload, affective_prefix)
// can skip nodes already present here. EL has no tuple returns so we use state as out-param.
let compile_seen_ids: String = engram_extract_ids(merged_nodes)
state_set("engram_compile_seen_ids", compile_seen_ids)
// Fallback: when all searches return nothing, fetch persona nodes.
let scan_part: String = if str_eq(merged_nodes, "") || str_eq(merged_nodes, "[]") {
let persona_fallback: String = engram_search_json("soul:persona Persona identity", 5)
@@ -627,11 +665,15 @@ fn handle_chat(body: String) -> String {
} else { "" }
let ctx: String = engram_compile(activation_seed)
// Read IDs published by engram_compile so session_preload can skip duplicate nodes.
// EL has no multiple return values; engram_compile writes its seen set to state.
let seen_ids: String = state_get("engram_compile_seen_ids")
let system: String = affective_prefix + build_system_prompt(ctx)
// Issue 9 fix: add project-specific and session-summary searches to session preload.
// Old hardcoded "user profile" and "in_progress active project" miss project-specific
// nodes stored under names like "Prism" unless those exact words appear in content.
// Dedup fix: skip any node whose ID already appeared in engram_compile's output.
let session_preload: String = if hist_len == 0 {
let profile_nodes: String = engram_search_json("user profile identity preferences", 5)
let work_nodes: String = engram_search_json("in_progress active project work", 5)
@@ -648,21 +690,24 @@ fn handle_chat(body: String) -> String {
let bullets: String = ""
let bullets = if pn > 0 {
let n0: String = json_array_get(profile_nodes, 0)
let n0_id: String = json_get(n0, "id")
let c0: String = json_get(n0, "content")
let s0: String = if str_len(c0) > 120 { str_slice(c0, 0, 120) } else { c0 }
if str_eq(s0, "") { bullets } else { "- " + s0 }
if str_eq(s0, "") || id_in_seen(n0_id, seen_ids) { bullets } else { "- " + s0 }
} else { bullets }
let bullets = if pn > 1 {
let n1: String = json_array_get(profile_nodes, 1)
let n1_id: String = json_get(n1, "id")
let c1: String = json_get(n1, "content")
let s1: String = if str_len(c1) > 120 { str_slice(c1, 0, 120) } else { c1 }
if str_eq(s1, "") { bullets } else { bullets + "\n- " + s1 }
if str_eq(s1, "") || id_in_seen(n1_id, seen_ids) { bullets } else { bullets + "\n- " + s1 }
} else { bullets }
let bullets = if pn > 2 {
let n2: String = json_array_get(profile_nodes, 2)
let n2_id: String = json_get(n2, "id")
let c2: String = json_get(n2, "content")
let s2: String = if str_len(c2) > 120 { str_slice(c2, 0, 120) } else { c2 }
if str_eq(s2, "") { bullets } else { bullets + "\n- " + s2 }
if str_eq(s2, "") || id_in_seen(n2_id, seen_ids) { bullets } else { bullets + "\n- " + s2 }
} else { bullets }
bullets
} else { "" }
@@ -672,15 +717,17 @@ fn handle_chat(body: String) -> String {
let wb: String = ""
let wb = if wn > 0 {
let w0: String = json_array_get(work_nodes, 0)
let w0_id: String = json_get(w0, "id")
let wc0: String = json_get(w0, "content")
let ws0: String = if str_len(wc0) > 120 { str_slice(wc0, 0, 120) } else { wc0 }
if str_eq(ws0, "") { wb } else { "- " + ws0 }
if str_eq(ws0, "") || id_in_seen(w0_id, seen_ids) { wb } else { "- " + ws0 }
} else { wb }
let wb = if wn > 1 {
let w1: String = json_array_get(work_nodes, 1)
let w1_id: String = json_get(w1, "id")
let wc1: String = json_get(w1, "content")
let ws1: String = if str_len(wc1) > 120 { str_slice(wc1, 0, 120) } else { wc1 }
if str_eq(ws1, "") { wb } else { wb + "\n- " + ws1 }
if str_eq(ws1, "") || id_in_seen(w1_id, seen_ids) { wb } else { wb + "\n- " + ws1 }
} else { wb }
wb
} else { "" }
@@ -690,24 +737,27 @@ fn handle_chat(body: String) -> String {
let pb: String = ""
let pb = if prn > 0 {
let pr0: String = json_array_get(project_nodes, 0)
let pr0_id: String = json_get(pr0, "id")
let prc0: String = json_get(pr0, "content")
let ps0: String = if str_len(prc0) > 120 { str_slice(prc0, 0, 120) } else { prc0 }
if str_eq(ps0, "") { pb } else { "- " + ps0 }
if str_eq(ps0, "") || id_in_seen(pr0_id, seen_ids) { pb } else { "- " + ps0 }
} else { pb }
let pb = if prn > 1 {
let pr1: String = json_array_get(project_nodes, 1)
let pr1_id: String = json_get(pr1, "id")
let prc1: String = json_get(pr1, "content")
let ps1: String = if str_len(prc1) > 120 { str_slice(prc1, 0, 120) } else { prc1 }
if str_eq(ps1, "") { pb } else { pb + "\n- " + ps1 }
if str_eq(ps1, "") || id_in_seen(pr1_id, seen_ids) { pb } else { pb + "\n- " + ps1 }
} else { pb }
pb
} else { "" }
let summary_bullet: String = if summary_ok {
let sn0: String = json_array_get(summary_nodes, 0)
let sn0_id: String = json_get(sn0, "id")
let sc0: String = json_get(sn0, "content")
let ss0: String = if str_len(sc0) > 200 { str_slice(sc0, 0, 200) } else { sc0 }
if str_eq(ss0, "") { "" } else { "- " + ss0 }
if str_eq(ss0, "") || id_in_seen(sn0_id, seen_ids) { "" } else { "- " + ss0 }
} else { "" }
let hp: Bool = !str_eq(profile_bullets, "")