20260147 迭代优化全量测试和覆盖率测试，时间从325秒降低到90+秒，覆盖率维持在90%

src/bin/replay_bundle_record.rs

@@ -670,6 +670,10 @@ mod tests {
     use super::*;
     use tempfile::tempdir;
 
+    fn skip_heavy_blackbox_test() -> bool {
+        std::env::var_os("RPKI_SKIP_HEAVY_BLACKBOX_TESTS").is_some()
+    }
+
     #[test]
     fn parse_args_requires_required_flags() {
         let argv = vec![
@@ -730,6 +734,9 @@ mod tests {
 
     #[test]
     fn run_base_bundle_record_smoke_root_only_apnic() {
+        if skip_heavy_blackbox_test() {
+            return;
+        }
         let dir = tempdir().expect("tempdir");
         let out_dir = dir.path().join("bundle");
         let out = run(Args {