20260803 死repo传输层黑名单+daemon健康检查摘除(#141)

src/validation/run_tree_from_tal.rs

@@ -345,6 +345,56 @@ fn persist_transport_request_prefetch_snapshot(
     Ok(())
 }
 
+/// Persist the dead-repo blacklist working copy at run end (#141). Failures
+/// degrade to a progress event; a broken blacklist file must never fail a run.
+fn persist_dead_repo_blacklist(
+    runtime: &Arc<dyn RepoSyncRuntime>,
+    timing: Option<&TimingHandle>,
+) -> Result<(), RunTreeFromTalError> {
+    let Some((blacklist_config, blacklist)) = runtime.dead_repo_blacklist_state() else {
+        return Ok(());
+    };
+    let persist_started = std::time::Instant::now();
+    let now_unix = std::time::SystemTime::now()
+        .duration_since(std::time::UNIX_EPOCH)
+        .map(|duration| duration.as_secs())
+        .unwrap_or(0);
+    match blacklist.store_atomic(&blacklist_config.path, now_unix) {
+        Ok(()) => {
+            let persist_ms = persist_started.elapsed().as_millis() as u64;
+            record_transport_prefetch_count(
+                timing,
+                "dead_repo_blacklist_entries",
+                blacklist.len() as u64,
+            );
+            record_transport_prefetch_count(
+                timing,
+                "dead_repo_blacklist_blacklisted",
+                blacklist.blacklisted_len() as u64,
+            );
+            crate::progress_log::emit(
+                "dead_repo_blacklist_persisted",
+                serde_json::json!({
+                    "path": blacklist_config.path.display().to_string(),
+                    "entries": blacklist.len(),
+                    "blacklisted": blacklist.blacklisted_len(),
+                    "persist_ms": persist_ms,
+                }),
+            );
+        }
+        Err(err) => {
+            crate::progress_log::emit(
+                "dead_repo_blacklist_persist_error",
+                serde_json::json!({
+                    "path": blacklist_config.path.display().to_string(),
+                    "error": err.to_string(),
+                }),
+            );
+        }
+    }
+    Ok(())
+}
+
 fn root_discovery_from_tal_input(
     tal_input: &TalInputSpec,
     http_fetcher: &dyn Fetcher,
@@ -813,6 +863,7 @@ where
         run_tree_serial_audit(root, &runner, config)?
     };
     persist_transport_request_prefetch_snapshot(store.as_ref(), &runtime, config, timing.as_ref())?;
+    persist_dead_repo_blacklist(&runtime, timing.as_ref())?;
     let downloads = download_log.snapshot_events();
     let download_stats = DownloadLogHandle::stats_from_events(&downloads);
     Ok(RunTreeFromTalAuditOutput {
@@ -936,6 +987,7 @@ where
         run_tree_serial_audit_multi_root(root_handles, &runner, config)?
     };
     persist_transport_request_prefetch_snapshot(store.as_ref(), &runtime, config, timing.as_ref())?;
+    persist_dead_repo_blacklist(&runtime, timing.as_ref())?;
     let downloads = download_log.snapshot_events();
     let download_stats = DownloadLogHandle::stats_from_events(&downloads);
     Ok(RunTreeFromTalAuditOutput {