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feat(prompt): refresh stale datetime (#3223)

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The system prompt is built once at daemon startup and cached. The
"Current Date & Time" section becomes stale immediately. This patch
replaces it with a fresh timestamp every time build_channel_system_prompt
is called (i.e. per incoming message).

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
Abdullah Imad 2026-03-11 19:04:23 -04:00 committed by GitHub
parent 9423b9c94e
commit d0edcec1f9
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1 changed files with 19 additions and 0 deletions
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19
src/channels/mod.rs
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@ -426,6 +426,25 @@ fn build_channel_system_prompt(
) -> String {
let mut prompt = base_prompt.to_string();
// Refresh the stale datetime in the cached system prompt
{
let now = chrono::Local::now();
let fresh = format!(
"## Current Date & Time\n\n{} ({})\n",
now.format("%Y-%m-%d %H:%M:%S"),
now.format("%Z"),
);
if let Some(start) = prompt.find("## Current Date & Time\n\n") {
// Find the end of this section (next "## " heading or end of string)
let rest = &prompt[start + 24..]; // skip past "## Current Date & Time\n\n"
let section_end = rest
.find("\n## ")
.map(|i| start + 24 + i)
.unwrap_or(prompt.len());
prompt.replace_range(start..section_end, fresh.trim_end());
}
}
if let Some(instructions) = channel_delivery_instructions(channel_name) {
if prompt.is_empty() {
prompt = instructions.to_string();