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delete dead flat-file journal tool and ephemeral stripping

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Journal entries are written to the memory graph via journal_new/
journal_update, not appended to a flat file. Remove thought/journal.rs
(67 lines), strip_ephemeral_tool_calls (55 lines), default_journal_path,
and all wiring. -141 lines.

Co-Authored-By: Proof of Concept <poc@bcachefs.org>
This commit is contained in:
Kent Overstreet 2026-04-02 15:35:56 -04:00
parent aceaf0410e
commit 809679b6ce
5 changed files with 1 additions and 142 deletions
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65
src/agent/runner.rs
View file

@ -362,10 +362,7 @@ impl Agent {
let msg = crate::agent::api::build_response_message(content, tool_calls);
// Strip ephemeral tool calls (journal) that the API has
// now processed. They're persisted to disk; no need to keep
// them in the conversation history burning tokens.
self.strip_ephemeral_tool_calls();
if let Some(usage) = &usage {
self.last_prompt_tokens = usage.prompt_tokens;
@ -897,66 +894,6 @@ impl Agent {
/// Strip ephemeral tool calls from the conversation history.
///
/// Ephemeral tools (like journal) persist their output to disk,
/// so the tool call + result don't need to stay in the context
/// window. We keep them for exactly one API round-trip (the model
/// needs to see the result was acknowledged), then strip them.
///
/// If an assistant message contains ONLY ephemeral tool calls,
/// the entire message and its tool results are removed. If mixed
/// with non-ephemeral calls, we leave it (rare case, small cost).
fn strip_ephemeral_tool_calls(&mut self) {
// Collect IDs of tool calls to strip
let mut strip_ids: Vec<String> = Vec::new();
let mut strip_msg_indices: Vec<usize> = Vec::new();
for (i, entry) in self.context.entries.iter().enumerate() {
let msg = entry.message();
if msg.role != Role::Assistant {
continue;
}
let calls = match &msg.tool_calls {
Some(c) if !c.is_empty() => c,
_ => continue,
};
let all_ephemeral = calls.iter().all(|c| {
c.function.name == tools::journal::TOOL_NAME
});
if all_ephemeral {
strip_msg_indices.push(i);
for call in calls {
strip_ids.push(call.id.clone());
}
}
}
if strip_ids.is_empty() {
return;
}
// Remove in reverse order to preserve indices
self.context.entries.retain(|entry| {
let msg = entry.message();
if msg.role == Role::Assistant {
if let Some(calls) = &msg.tool_calls {
if calls.iter().all(|c| strip_ids.contains(&c.id)) {
return false;
}
}
}
if msg.role == Role::Tool {
if let Some(ref id) = msg.tool_call_id {
if strip_ids.contains(id) {
return false;
}
}
}
true
});
}
/// Last prompt token count reported by the API.
pub fn last_prompt_tokens(&self) -> u32 {
self.last_prompt_tokens