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claude: static role/tools moved to --system-prompt-file

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This commit is contained in:
müde 2026-05-15 17:44:15 +02:00
parent 37c6504462
commit 68fe66c0ef
5 changed files with 98 additions and 80 deletions
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45
hive-ag3nt/src/turn.rs
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@ -50,6 +50,29 @@ pub async fn write_mcp_config(socket: &Path) -> Result<PathBuf> {
Ok(path)
}
/// Write the agent's / manager's static system prompt to a file next to
/// the MCP config and return the path. Passed to claude via
/// `--system-prompt-file`, replacing claude's default system prompt with
/// the role + tools instructions. Per-turn prompts become much smaller
/// (just the wake message body).
pub async fn write_system_prompt(
socket: &Path,
label: &str,
flavor: mcp::Flavor,
) -> Result<PathBuf> {
let parent = socket.parent().unwrap_or_else(|| Path::new("/run/hive"));
tokio::fs::create_dir_all(parent).await.ok();
let template = match flavor {
mcp::Flavor::Agent => include_str!("../prompts/agent.md"),
mcp::Flavor::Manager => include_str!("../prompts/manager.md"),
};
let body = template.replace("{label}", label);
let path = parent.join("claude-system-prompt.md");
tokio::fs::write(&path, body).await?;
tracing::info!(path = %path.display(), "wrote claude system prompt");
Ok(path)
}
/// One claude turn's outcome. The harness uses this to decide whether to
/// transparently kick off a compaction and retry.
#[derive(Debug)]
@ -66,16 +89,17 @@ pub enum TurnOutcome {
pub async fn drive_turn(
prompt: &str,
mcp_config: &Path,
system_prompt: &Path,
bus: &Bus,
flavor: mcp::Flavor,
) -> TurnOutcome {
match run_turn(prompt, mcp_config, bus, flavor).await {
match run_turn(prompt, mcp_config, system_prompt, bus, flavor).await {
TurnOutcome::PromptTooLong => {
if let Err(e) = compact_session(bus).await {
tracing::warn!(error = %format!("{e:#}"), "compact failed");
return TurnOutcome::Failed(e);
}
run_turn(prompt, mcp_config, bus, flavor).await
run_turn(prompt, mcp_config, system_prompt, bus, flavor).await
}
other => other,
}
@ -131,10 +155,20 @@ pub async fn wait_for_login(claude_dir: &Path, state: Arc<Mutex<LoginState>>, po
pub async fn run_turn(
prompt: &str,
mcp_config: &Path,
system_prompt: &Path,
bus: &Bus,
flavor: mcp::Flavor,
) -> TurnOutcome {
match run_claude(prompt, mcp_config, bus, flavor, ClaudeMode::Turn).await {
match run_claude(
prompt,
mcp_config,
Some(system_prompt),
bus,
flavor,
ClaudeMode::Turn,
)
.await
{
Ok(too_long) if too_long => TurnOutcome::PromptTooLong,
Ok(_) => TurnOutcome::Ok,
Err(e) => TurnOutcome::Failed(e),
@ -151,6 +185,7 @@ pub async fn compact_session(bus: &Bus) -> Result<()> {
let _ = run_claude(
"/compact",
Path::new("/dev/null"),
None,
bus,
mcp::Flavor::Agent, // tool surface unused for /compact
ClaudeMode::Compact,
@ -169,6 +204,7 @@ enum ClaudeMode {
async fn run_claude(
prompt: &str,
mcp_config: &Path,
system_prompt: Option<&Path>,
bus: &Bus,
flavor: mcp::Flavor,
mode: ClaudeMode,
@ -183,6 +219,9 @@ async fn run_claude(
.arg("--continue")
.arg("--settings")
.arg(CLAUDE_SETTINGS);
if let Some(p) = system_prompt {
cmd.arg("--system-prompt-file").arg(p);
}
if let ClaudeMode::Turn = mode {
cmd.arg("--mcp-config")
.arg(mcp_config)