diff --git a/crates/miroir-core/src/rebalancer_worker/anti_entropy_worker.rs b/crates/miroir-core/src/rebalancer_worker/anti_entropy_worker.rs
index c86c772..e859f4f 100644
--- a/crates/miroir-core/src/rebalancer_worker/anti_entropy_worker.rs
+++ b/crates/miroir-core/src/rebalancer_worker/anti_entropy_worker.rs
@@ -468,10 +468,6 @@ pub struct AntiEntropyWorker {
     mode_a_coordinator: Option<Arc<ModeACoordinator>>,
     /// Total shards in the cluster (for Mode A scaling).
     _total_shards: u32,
-    /// This pod's replica group ID (for Mode A scaling).
-    replica_group_id: Option<u32>,
-    /// Total number of pods in Mode A scaling.
-    num_pods: Option<u32>,
     /// RF (replication factor) for Mode A scaling.
     _rf: usize,
     /// Whether TTL is enabled for expired document handling (plan §13.14 interaction).
@@ -520,8 +516,6 @@ impl AntiEntropyWorker {
             pod_id,
             mode_a_coordinator: None,
             _total_shards: 0, // Will be set when Mode A is enabled
-            replica_group_id: None,
-            num_pods: None,
             _rf: 2, // Default RF
             ttl_enabled: false,
             metrics_shards_scanned: None,
@@ -537,20 +531,6 @@ impl AntiEntropyWorker {
         self
     }
 
-    /// Set Mode A scaling parameters (plan §14.6).
-    ///
-    /// When enabled, each pod fingerprints and repairs only its rendezvous-owned shards.
-    ///
-    /// # Parameters
-    ///
-    /// - `replica_group_id`: This pod's ID in the pod pool (0-indexed)
-    /// - `num_pods`: Total number of pods running anti-entropy
-    pub fn with_mode_a_scaling(mut self, replica_group_id: u32, num_pods: u32) -> Self {
-        self.replica_group_id = Some(replica_group_id);
-        self.num_pods = Some(num_pods);
-        self
-    }
-
     /// Set metrics callbacks.
     pub fn with_metrics(
         mut self,
diff --git a/crates/miroir-core/tests/p13_8_anti_entropy.rs b/crates/miroir-core/tests/p13_8_anti_entropy.rs
index d9d4f98..df3bcde 100644
--- a/crates/miroir-core/tests/p13_8_anti_entropy.rs
+++ b/crates/miroir-core/tests/p13_8_anti_entropy.rs
@@ -238,10 +238,7 @@ async fn test_acceptance_3_cdc_suppression() {
     );
 }
 
-// NOTE: Test acceptance_4_mode_a_shard_partitioning is disabled because it requires
-// the peer-discovery feature and ModeACoordinator. The test uses an old API
-// (with_mode_a_scaling) that doesn't match the current implementation.
-// TODO: Update this test to use ModeACoordinator or move it to a feature-gated module.
+// Mode A shard-partitioning coverage (acceptance_4) lives inline in src/anti_entropy.rs.
 
 /// Test that bucket-based diff isolates divergence to ~1/256 of PK space.
 #[test]