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fix(memory): add minimum-length filter for auto-save messages

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Every user message was auto-saved to memory regardless of length,
flooding the store with trivial entries like "ok", "thanks", "hi".
These noise entries competed with real memories during recall, degrading
relevance — especially with keyword-only search.

Skip auto-saving messages shorter than 20 characters. Applied to both
the channel path (channels/mod.rs) and CLI agent path (agent/loop_.rs).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Edvard 2026-02-19 15:24:06 -05:00 • committed by Chummy
parent 63a59e3735
commit ea2ff7c53b
2 changed files with 15 additions and 5 deletions
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14
src/agent/loop_.rs
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@ -26,6 +26,10 @@ const STREAM_CHUNK_MIN_CHARS: usize = 80;
/// Used as a safe fallback when `max_tool_iterations` is unset or configured as zero.
const DEFAULT_MAX_TOOL_ITERATIONS: usize = 10;
/// Minimum user-message length (in chars) for auto-save to memory.
/// Matches the channel-side constant in `channels/mod.rs`.
const AUTOSAVE_MIN_MESSAGE_CHARS: usize = 20;
static SENSITIVE_KEY_PATTERNS: LazyLock<RegexSet> = LazyLock::new(|| {
RegexSet::new([
r"(?i)token",
@ -1475,8 +1479,8 @@ pub async fn run(
let mut final_output = String::new();
if let Some(msg) = message {
// Auto-save user message to memory
if config.memory.auto_save {
// Auto-save user message to memory (skip short/trivial messages)
if config.memory.auto_save && msg.chars().count() >= AUTOSAVE_MIN_MESSAGE_CHARS {
let user_key = autosave_memory_key("user_msg");
let _ = mem
.store(&user_key, &msg, MemoryCategory::Conversation, None)
@ -1597,8 +1601,10 @@ pub async fn run(
_ => {}
}
// Auto-save conversation turns
if config.memory.auto_save {
// Auto-save conversation turns (skip short/trivial messages)
if config.memory.auto_save
&& user_input.chars().count() >= AUTOSAVE_MIN_MESSAGE_CHARS
{
let user_key = autosave_memory_key("user_msg");
let _ = mem
.store(&user_key, &user_input, MemoryCategory::Conversation, None)