20260501 修复CurrentRepoIndex完整性并优化replay guard

src/parallel/config.rs

@@ -9,6 +9,7 @@ pub struct ParallelPhase1Config {
 pub struct ParallelPhase2Config {
     pub object_workers: usize,
     pub worker_queue_capacity: usize,
+    pub ready_batch_size: usize,
 }
 
 impl Default for ParallelPhase2Config {
@@ -16,6 +17,7 @@ impl Default for ParallelPhase2Config {
         Self {
             object_workers: 8,
             worker_queue_capacity: 256,
+            ready_batch_size: 256,
         }
     }
 }
@@ -47,5 +49,6 @@ mod tests {
         let cfg = ParallelPhase2Config::default();
         assert!(cfg.object_workers > 0);
         assert!(cfg.worker_queue_capacity > 0);
+        assert!(cfg.ready_batch_size > 0);
     }
 }