20260415_2 支持多个RIR并行混合执行，APNIC+ARIN运行1 snapshot + 1 delta，对比rpki-client，snapshot比rpki-client慢4分钟(398vs137)，输出未收敛，delta时输出收敛(348vs181)，评估应该是正确性没有问题，下一步进一步优化性能

src/validation/tree.rs

@@ -122,6 +122,14 @@ pub fn run_tree_serial_audit(
     root: CaInstanceHandle,
     runner: &dyn PublicationPointRunner,
     config: &TreeRunConfig,
+) -> Result<TreeRunAuditOutput, TreeRunError> {
+    run_tree_serial_audit_multi_root(vec![root], runner, config)
+}
+
+pub fn run_tree_serial_audit_multi_root(
+    roots: Vec<CaInstanceHandle>,
+    runner: &dyn PublicationPointRunner,
+    config: &TreeRunConfig,
 ) -> Result<TreeRunAuditOutput, TreeRunError> {
     #[derive(Clone, Debug)]
     struct QueuedCaInstance {
@@ -133,13 +141,15 @@ pub fn run_tree_serial_audit(
 
     let mut next_id: u64 = 0;
     let mut queue: std::collections::VecDeque<QueuedCaInstance> = std::collections::VecDeque::new();
-    queue.push_back(QueuedCaInstance {
-        id: next_id,
-        handle: root,
-        parent_id: None,
-        discovered_from: None,
-    });
-    next_id += 1;
+    for root in roots {
+        queue.push_back(QueuedCaInstance {
+            id: next_id,
+            handle: root,
+            parent_id: None,
+            discovered_from: None,
+        });
+        next_id += 1;
+    }
 
     let mut visited_manifest_uris: std::collections::HashSet<String> =
         std::collections::HashSet::new();
@@ -245,6 +255,7 @@ mod tests {
     use super::{
         CaInstanceHandle, DiscoveredChildCaInstance, PublicationPointRunResult,
         PublicationPointRunner, TreeRunConfig, run_tree_serial_audit,
+        run_tree_serial_audit_multi_root,
     };
 
     fn sample_handle(manifest: &str) -> CaInstanceHandle {
@@ -339,4 +350,23 @@ mod tests {
             ["rsync://example.test/repo/child.mft"]
         );
     }
+
+    #[test]
+    fn run_tree_serial_audit_multi_root_processes_all_roots() {
+        let seen = Arc::new(Mutex::new(Vec::new()));
+        let runner = PrefetchRecordingRunner {
+            seen_prefetch_children: Arc::clone(&seen),
+        };
+        let out = run_tree_serial_audit_multi_root(
+            vec![
+                sample_handle("rsync://example.test/repo/root-a.mft"),
+                sample_handle("rsync://example.test/repo/root-b.mft"),
+            ],
+            &runner,
+            &TreeRunConfig::default(),
+        )
+        .expect("tree run");
+        assert_eq!(out.tree.instances_processed, 2);
+        assert_eq!(out.publication_points.len(), 2);
+    }
 }