Function degraded_poll_loop

src/daemon/git_watch.rs:768–794

The degraded fallback: mtime-poll HEAD + packed-refs every 5 minutes and sync when they advance. Used when the inotify watcher cannot be built or dies (e.g. ENOSPC). Covers ONE project — never a global failure.

(
    inner: &Arc<GitWatcherInner>,
    state: &Arc<WatchState>,
    common: Option<&Path>,
)

/// sync when they advance. Used when the inotify watcher cannot be built or
/// dies (e.g. ENOSPC). Covers ONE project — never a global failure.
async fn degraded_poll_loop(
    inner: &Arc<GitWatcherInner>,
    state: &Arc<WatchState>,
    common: Option<&Path>,
) {
    let mut last_sig: Option<(SystemTime, SystemTime)> = None;
    loop {
        state.health.beat();
        if let Some(common) = common {
            let sig = metadata_signature(common);
            if sig != last_sig && last_sig.is_some() {
                let _permit = inner.sync_semaphore.acquire().await;
                if sync_project(
                    &state.project_root,
                    &TraceDecayOpenOptions::default(),
                    inner.config.full_sync_escalation_files,
                )
                .await
                {
                    state.health.mark_synced();
                }
            }
            last_sig = sig;
        }
        tokio::time::sleep(DEGRADED_POLL_INTERVAL).await;
    }
}

/// mtime signature of HEAD + packed-refs for the degraded poller.
fn metadata_signature(common: &Path) -> Option<(SystemTime, SystemTime)> {