diff --git a/effects/cloud_read_miss_test.go b/effects/cloud_read_miss_test.go
index 2851649..79e847c 100644
--- a/effects/cloud_read_miss_test.go
+++ b/effects/cloud_read_miss_test.go
@@ -82,8 +82,10 @@ func TestReadMissRehydratesFromCloud(t *testing.T) {
 	// whole closure, so the install walk runs entirely locally — zero
 	// per-effect network fetches.
 	bc := &selectiveBroadcaster{
-		allRegionPeersReachable: true, // in the majority partition
-		peerIDs:                 []pb.NodeID{7},
+		mockBroadcaster: mockBroadcaster{
+			allRegionPeersReachable: true,
+			peerIDs:                 []pb.NodeID{7},
+		},
 	}
 	e := newTestEngine(bc)
 	fake := &fakeCloudReader{
@@ -155,9 +157,11 @@ func TestReadMissPartialSidecarFetchesStraggler(t *testing.T) {
 	// The sidecar carries only the tip; the dep is the straggler, served by
 	// the broadcaster.
 	bc := &selectiveBroadcaster{
-		allRegionPeersReachable: true,
-		peerIDs:                 []pb.NodeID{7},
-		fetchable:               map[Tip][]byte{depTip: depWire},
+		mockBroadcaster: mockBroadcaster{
+			allRegionPeersReachable: true,
+			peerIDs:                 []pb.NodeID{7},
+		},
+		fetchable: map[Tip][]byte{depTip: depWire},
 	}
 	e := newTestEngine(bc)
 	fake := &fakeCloudReader{
@@ -188,7 +192,9 @@ func TestReadMissPartialSidecarFetchesStraggler(t *testing.T) {
 // round-trip.
 func TestReadMissCloudEmptyStillMisses(t *testing.T) {
 	bc := &selectiveBroadcaster{
-		allRegionPeersReachable: true,
+		mockBroadcaster: mockBroadcaster{
+			allRegionPeersReachable: true,
+		},
 	}
 	e := newTestEngine(bc)
 	fake := &fakeCloudReader{tips: map[string][]Tip{}} // Cloud holds nothing
@@ -223,7 +229,9 @@ func TestReadMissCloudEmptyStillMisses(t *testing.T) {
 // back mid-outage must still rehydrate the key).
 func TestReadMissCloudErrorFailsRead(t *testing.T) {
 	bc := &selectiveBroadcaster{
-		allRegionPeersReachable: true,
+		mockBroadcaster: mockBroadcaster{
+			allRegionPeersReachable: true,
+		},
 	}
 	e := newTestEngine(bc)
 	fake := &fakeCloudReader{err: context.DeadlineExceeded}
@@ -268,9 +276,11 @@ func TestReadMissServesReadableSubsetAndMarksPending(t *testing.T) {
 	holed := Tip{9, 4} // blob provably absent from cloud storage
 
 	bc := &partialHoleBroadcaster{
-		allRegionPeersReachable: true,
-		peerIDs:                 []pb.NodeID{7},
-		fetchable:               map[Tip][]byte{reachable: wire},
+		mockBroadcaster: mockBroadcaster{
+			allRegionPeersReachable: true,
+			peerIDs:                 []pb.NodeID{7},
+		},
+		fetchable: map[Tip][]byte{reachable: wire},
 	}
 	e := newTestEngine(bc)
 	fake := &fakeCloudReader{
@@ -310,7 +320,11 @@ func TestReadMissAllTipsPendingFailsRead(t *testing.T) {
 	const key = "evicted"
 	holed := Tip{9, 4}
 
-	bc := &holedFetchBroadcaster{allRegionPeersReachable: true}
+	bc := &holedFetchBroadcaster{
+		mockBroadcaster: mockBroadcaster{
+			allRegionPeersReachable: true,
+		},
+	}
 	e := newTestEngine(bc)
 	fake := &fakeCloudReader{
 		tips: map[string][]Tip{key: {holed}},
diff --git a/effects/nack_ghost_test.go b/effects/nack_ghost_test.go
index 415cbe8..d68b7e0 100644
--- a/effects/nack_ghost_test.go
+++ b/effects/nack_ghost_test.go
@@ -188,9 +188,11 @@ func TestEnsureSubscribed_InstallsOnlyWalkableTips(t *testing.T) {
 	ghostTip := Tip{99999, 4}
 
 	bc := &selectiveBroadcaster{
-		peerIDs:                 []pb.NodeID{peerNode},
-		allRegionPeersReachable: true,
-		nackTips:                []*pb.EffectRef{toPbRef(realTip), toPbRef(ghostTip)},
+		mockBroadcaster: mockBroadcaster{
+			peerIDs:                 []pb.NodeID{peerNode},
+			allRegionPeersReachable: true,
+		},
+		nackTips: []*pb.EffectRef{toPbRef(realTip), toPbRef(ghostTip)},
 		fetchable: map[Tip][]byte{
 			realTip: realBytes,
 			// ghostTip intentionally absent — FetchFromAny returns error.
@@ -255,10 +257,12 @@ func TestEnsureSubscribed_AllTipsUnreachable_RetriesBootstrap(t *testing.T) {
 	ghostB := Tip{500, 2}
 
 	bc := &selectiveBroadcaster{
-		peerIDs:                 []pb.NodeID{peerNode},
-		allRegionPeersReachable: true,
-		nackTips:                []*pb.EffectRef{toPbRef(ghostA), toPbRef(ghostB)},
-		fetchable:               map[Tip][]byte{}, // nothing fetchable
+		mockBroadcaster: mockBroadcaster{
+			peerIDs:                 []pb.NodeID{peerNode},
+			allRegionPeersReachable: true,
+		},
+		nackTips:  []*pb.EffectRef{toPbRef(ghostA), toPbRef(ghostB)},
+		fetchable: map[Tip][]byte{}, // nothing fetchable
 	}
 
 	e := newTestEngine(bc)
@@ -416,10 +420,12 @@ func TestRetryBootstrap_ShutdownUnblocksWaiters(t *testing.T) {
 	const peerNode pb.NodeID = 7
 
 	bc := &selectiveBroadcaster{
-		peerIDs:                 []pb.NodeID{peerNode},
-		allRegionPeersReachable: true,
-		nackTips:                []*pb.EffectRef{toPbRef(Tip{500, 1})},
-		fetchable:               map[Tip][]byte{},
+		mockBroadcaster: mockBroadcaster{
+			peerIDs:                 []pb.NodeID{peerNode},
+			allRegionPeersReachable: true,
+		},
+		nackTips:  []*pb.EffectRef{toPbRef(Tip{500, 1})},
+		fetchable: map[Tip][]byte{},
 	}
 
 	e := newTestEngine(bc)
diff --git a/effects/snapshot_test.go b/effects/snapshot_test.go
index 1b3ccdf..1d35d07 100644
--- a/effects/snapshot_test.go
+++ b/effects/snapshot_test.go
@@ -1195,9 +1195,11 @@ func TestSubscriptionBootstrap_FetchesRemoteState(t *testing.T) {
 	// Set up "local" engine (node 1) with no data
 	localLog := newSnapshotLog()
 
-	// Create the bootstrap broadcaster that connects local and remote
 	bc := &bootstrapBroadcaster{
-		peerIDs: []pb.NodeID{2}, allRegionPeersReachable: true,
+		mockBroadcaster: mockBroadcaster{
+			peerIDs:                 []pb.NodeID{2},
+			allRegionPeersReachable: true,
+		},
 	}
 	// The remote engine's broadcaster needs to forward NACKs to the local engine
 	// We'll set this up after creating the local engine
diff --git a/go.mod b/go.mod
index 1a8cd0b..04e8387 100644
--- a/go.mod
+++ b/go.mod
@@ -1,10 +1,10 @@
 module github.com/swytchdb/engine
 
-go 1.27.0
+go 1.26.5
 
 require (
 	github.com/cespare/xxhash/v2 v2.3.0
-	github.com/klauspost/compress v1.19.2
+	github.com/klauspost/compress v1.20.0
 	github.com/prometheus/client_golang v1.24.1
 	github.com/prometheus/client_model v0.6.3
 	github.com/puzpuzpuz/xsync/v4 v4.5.0
@@ -14,7 +14,7 @@ require (
 	go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp v1.46.0
 	go.opentelemetry.io/otel/sdk v1.46.0
 	go.opentelemetry.io/otel/trace v1.46.0
-	golang.org/x/crypto v0.55.0
+	golang.org/x/crypto v0.56.0
 	golang.org/x/sync v0.22.0
 	google.golang.org/grpc v1.83.2
 	google.golang.org/protobuf v1.36.12
diff --git a/go.sum b/go.sum
index 259461f..1d4a7fd 100644
--- a/go.sum
+++ b/go.sum
@@ -19,6 +19,8 @@ github.com/grpc-ecosystem/grpc-gateway/v2 v2.30.0 h1:/Tnpcb2E0Pz/tN9s3bfEY2Q8ePC
 github.com/grpc-ecosystem/grpc-gateway/v2 v2.30.0/go.mod h1:zOBXOsUaBSjKgmH4OGzV1esUpR3oUSCPYVd2cUBjKYY=
 github.com/klauspost/compress v1.19.2 h1:hMRETovs/pu/dVWN7zIT1PGG8t509MwT6bO7XSi26R8=
 github.com/klauspost/compress v1.19.2/go.mod h1:cwPg85FWrGar70rWktvGQj8/hthj3wpl0PGDogxkrSQ=
+github.com/klauspost/compress v1.20.0 h1:a3C1ke2ohxFymNlb2HWAHjDeKCI90scRskErZkR0ezA=
+github.com/klauspost/compress v1.20.0/go.mod h1:LUdAzn7YLVvxLpc7y3V1m40wESHTgc1422pwwBSKYuI=
 github.com/klauspost/cpuid/v2 v2.4.0 h1:S6Hrbc7+ywsr0r+RLapfGBHfyefhCTwEh3A0tV913Dw=
 github.com/klauspost/cpuid/v2 v2.4.0/go.mod h1:19jmZ9mjzoF//ddRSUsv0zfBTJWh3QJh9FNxZTMrGxU=
 github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
@@ -71,6 +73,8 @@ go.yaml.in/yaml/v3 v3.0.5 h1:N6y/pJk8buWs9NY5ERU2HSMfm+IuD/OtfdAnq6kESPw=
 go.yaml.in/yaml/v3 v3.0.5/go.mod h1:HVTZu1O7/Vkt2N+BFy8Zza+lnLsABggaTM2ZpNIGuKg=
 golang.org/x/crypto v0.55.0 h1:+KWHjbgOaAQ66dh/YlkZKHlz9ZUlq61AFirAR9ntP8M=
 golang.org/x/crypto v0.55.0/go.mod h1:uq0V9dE/fzQuJtbnL+2EhWOE63vo164FY8xqEnV9xis=
+golang.org/x/crypto v0.56.0 h1:GUh5Ii4J5jtcseSMiRqr1jXCNHoxjeV9Fmekc2oLy6Y=
+golang.org/x/crypto v0.56.0/go.mod h1:OMW5y6CY9l38uPLmxU6l6pwcXp1obtLo3e6gT7gQR2I=
 golang.org/x/net v0.58.0 h1:ynWG7rqYi4ccpTEuPZ2QGWHktVEM9DMCj9yzDE0Q7To=
 golang.org/x/net v0.58.0/go.mod h1:YwCddHnFlT7eLQqVprV19OnhLGtc5xOKgE0RyqgfWAU=
 golang.org/x/sync v0.22.0 h1:SZjpbeLmrCk4xhRSZFNZW5gFUeCeFgjekvI/+gfScek=