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seen_recent: cap at 20 roots total across both seen sets

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Budget of 20 roots split between current and prev. Current gets
priority, prev fills the remainder. Prevents flooding the agent
with hundreds of previously surfaced keys.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Kent Overstreet 2026-03-22 14:28:03 -04:00
parent 9512dc0a31
commit 53b63ab45b
1 changed files with 25 additions and 17 deletions
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38
poc-memory/src/agents/defs.rs
View file

@ -520,34 +520,42 @@ fn resolve_seen_recent() -> String {
let mut out = String::new(); let mut out = String::new();
const MAX_ROOTS: usize = 20;
// Current: already in this context, don't re-surface // Current: already in this context, don't re-surface
if !current.is_empty() { // Sort newest first, dedup, cap
let mut current_sorted = current.clone();
current_sorted.sort_by(|a, b| b.0.cmp(&a.0));
let mut seen_keys = std::collections::HashSet::new();
let current_deduped: Vec<_> = current_sorted.into_iter()
.filter(|(_, key)| seen_keys.insert(key.clone()))
.take(MAX_ROOTS)
.collect();
if !current_deduped.is_empty() {
out.push_str("Already surfaced this context (don't re-surface unless conversation shifted):\n"); out.push_str("Already surfaced this context (don't re-surface unless conversation shifted):\n");
let mut seen = std::collections::HashSet::new(); for (ts, key) in &current_deduped {
for (ts, key) in &current {
if seen.insert(key.clone()) {
out.push_str(&format!("- {} (surfaced {})\n", key, ts)); out.push_str(&format!("- {} (surfaced {})\n", key, ts));
} }
} }
}
// Prev: surfaced before compaction, MAY need re-surfacing // Prev: surfaced before compaction, MAY need re-surfacing
if !prev.is_empty() { // Exclude anything already in current, sort newest first, cap at remaining budget
let current_keys: std::collections::HashSet<_> = current.iter() let remaining = MAX_ROOTS.saturating_sub(current_deduped.len());
.map(|(_, k)| k.as_str()).collect(); if remaining > 0 && !prev.is_empty() {
let prev_only: Vec<_> = prev.iter() let mut prev_sorted = prev.clone();
.filter(|(_, k)| !current_keys.contains(k.as_str())) prev_sorted.sort_by(|a, b| b.0.cmp(&a.0));
let prev_deduped: Vec<_> = prev_sorted.into_iter()
.filter(|(_, key)| seen_keys.insert(key.clone()))
.take(remaining)
.collect(); .collect();
if !prev_only.is_empty() { if !prev_deduped.is_empty() {
out.push_str("\nSurfaced before compaction (context was reset — re-surface if still relevant):\n"); out.push_str("\nSurfaced before compaction (context was reset — re-surface if still relevant):\n");
let mut seen = std::collections::HashSet::new(); for (ts, key) in &prev_deduped {
for (ts, key) in prev_only {
if seen.insert(key.clone()) {
out.push_str(&format!("- {} (pre-compaction, {})\n", key, ts)); out.push_str(&format!("- {} (pre-compaction, {})\n", key, ts));
} }
} }
} }
}
out.trim_end().to_string() out.trim_end().to_string()
} }