diff --git a/node/cmd/node/main.go b/node/cmd/node/main.go
index 9296c4ed7..e8abe3b4b 100644
--- a/node/cmd/node/main.go
+++ b/node/cmd/node/main.go
@@ -377,7 +377,7 @@ func startMetricsServer(addr string, logger tmlog.Logger) {
 	}
 	mux := http.NewServeMux()
 	mux.Handle("/metrics", promhttp.Handler())
-	srv := &http.Server{Addr: addr, Handler: mux}
+	srv := &http.Server{Addr: addr, Handler: mux, ReadHeaderTimeout: 10 * time.Second}
 	go func() {
 		if err := srv.ListenAndServe(); err != nil && err != http.ErrServerClosed {
 			logger.Error("metrics server", "addr", addr, "err", err)
diff --git a/node/derivation/derivation.go b/node/derivation/derivation.go
index 068f255f5..f7e8ef2a2 100644
--- a/node/derivation/derivation.go
+++ b/node/derivation/derivation.go
@@ -878,7 +878,7 @@ func (d *Derivation) withReactorsQuiesced(ctx context.Context, batchIndex uint64
 		return err
 	}
 	defer func() {
-		// Use background context so a cancelled parent ctx doesn't
+		// Use background context so a canceled parent ctx doesn't
 		// prevent reactor restart.
 		height := preWrite
 		if cur, readErr := d.l2Client.BlockNumber(context.Background()); readErr == nil {
diff --git a/node/hakeeper/block_fsm.go b/node/hakeeper/block_fsm.go
index 2a97ee212..d299df5c4 100644
--- a/node/hakeeper/block_fsm.go
+++ b/node/hakeeper/block_fsm.go
@@ -153,7 +153,7 @@ func (f *BlockFSM) Snapshot() (raft.FSMSnapshot, error) {
 // Reads the 8-byte appliedHeight from the snapshot. Does NOT call onApplied --
 // geth state must be recovered independently (Fullnode P2P sync).
 func (f *BlockFSM) Restore(rc io.ReadCloser) error {
-	defer rc.Close()
+	defer func() { _ = rc.Close() }()
 
 	data, err := io.ReadAll(rc)
 	if err != nil {
@@ -191,7 +191,7 @@ func (s *blockSnapshot) Persist(sink raft.SnapshotSink) error {
 	var buf [8]byte
 	binary.BigEndian.PutUint64(buf[:], s.height)
 	if _, err := sink.Write(buf[:]); err != nil {
-		sink.Cancel()
+		_ = sink.Cancel()
 		return fmt.Errorf("blockSnapshot.Persist: write failed: %w", err)
 	}
 	return sink.Close()
diff --git a/node/hakeeper/ha_service.go b/node/hakeeper/ha_service.go
index 5c1002859..fd3953a52 100644
--- a/node/hakeeper/ha_service.go
+++ b/node/hakeeper/ha_service.go
@@ -30,13 +30,13 @@ const (
 // HAService implements the SequencerHA interface from tendermint/sequencer.
 // It also satisfies rpc.ConsensusAdapter so it can be passed directly to the RPC server.
 type HAService struct {
-	logger       tmlog.Logger
-	cfg          *Config
+	logger         tmlog.Logger
+	cfg            *Config
 	advertisedAddr string // resolved once in New(), used throughout
-	fsm          *BlockFSM
-	rpcServer    *hakeeperrpc.Server
+	fsm            *BlockFSM
+	rpcServer      *hakeeperrpc.Server
 
-	// Raft internals (initialised in Start)
+	// Raft internals (initialized in Start)
 	r         *raft.Raft
 	transport *raft.NetworkTransport
 
@@ -69,7 +69,7 @@ func (h *HAService) SetOnBlockApplied(fn func(*types.BlockV2) error) {
 
 // ── SequencerHA interface ────────────────────────────────────────────────────
 
-// Start initialises Raft and the management RPC server.
+// Start initializes Raft and the management RPC server.
 // Called by StateV2.OnStart() at upgrade height.
 func (h *HAService) Start() error {
 	if err := h.initRaft(); err != nil {
@@ -271,7 +271,7 @@ func (h *HAService) Addr() string { return h.advertisedAddr }
 // initRaft creates the Raft instance. Called once from Start().
 // On failure, all opened resources are cleaned up via a single deferred closure.
 func (h *HAService) initRaft() (retErr error) {
-	if err := os.MkdirAll(h.cfg.StorageDir, 0o755); err != nil {
+	if err := os.MkdirAll(h.cfg.StorageDir, 0o750); err != nil {
 		return fmt.Errorf("mkdir %q: %w", h.cfg.StorageDir, err)
 	}
 
@@ -287,13 +287,13 @@ func (h *HAService) initRaft() (retErr error) {
 				r.Shutdown()
 			}
 			if transport != nil {
-				transport.Close()
+				_ = transport.Close()
 			}
 			if stableStore != nil {
-				stableStore.Close()
+				_ = stableStore.Close()
 			}
 			if logStore != nil {
-				logStore.Close()
+				_ = logStore.Close()
 			}
 		}
 	}()
@@ -364,7 +364,7 @@ func (h *HAService) initRaft() (retErr error) {
 	h.r = r
 	h.transport = transport
 
-	h.logger.Info("hakeeper: raft initialised", "bind", bindAddr)
+	h.logger.Info("hakeeper: raft initialized", "bind", bindAddr)
 	return nil
 }
 
diff --git a/node/hakeeper/rpc/backend.go b/node/hakeeper/rpc/backend.go
index 1c9736ae0..bb1be40b8 100644
--- a/node/hakeeper/rpc/backend.go
+++ b/node/hakeeper/rpc/backend.go
@@ -7,6 +7,14 @@ import (
 )
 
 // APIBackend implements API, delegating to a ConsensusAdapter.
+//
+// Every method takes a context.Context to satisfy the go-ethereum JSON-RPC
+// server's handler signature, but intentionally does not propagate it. The
+// ConsensusAdapter wraps hashicorp/raft, whose membership and leadership
+// operations are synchronous and not context-cancellable; those calls already
+// enforce their own bounded deadline (raftTimeout) at the adapter layer, so
+// there is nothing a caller-supplied ctx could cancel mid-operation. This is
+// deliberate, not an oversight — do not "fix" it by threading ctx through.
 type APIBackend struct {
 	log  log.Logger
 	cons ConsensusAdapter
diff --git a/node/hakeeper/rpc/server.go b/node/hakeeper/rpc/server.go
index 90cc3bc33..3cea4ee9b 100644
--- a/node/hakeeper/rpc/server.go
+++ b/node/hakeeper/rpc/server.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"net/http"
 	"sync"
+	"time"
 
 	ethrpc "github.com/morph-l2/go-ethereum/rpc"
 	"github.com/pkg/errors"
@@ -40,8 +41,9 @@ func New(log log.Logger, listenAddr string, listenPort int, cons ConsensusAdapte
 
 	addr := fmt.Sprintf("%s:%d", listenAddr, listenPort)
 	httpSrv := &http.Server{
-		Addr:    addr,
-		Handler: mux,
+		Addr:              addr,
+		Handler:           mux,
+		ReadHeaderTimeout: 10 * time.Second,
 	}
 
 	return &Server{
diff --git a/node/l1sequencer/enclave_signer.go b/node/l1sequencer/enclave_signer.go
index e83a70fca..53d575440 100644
--- a/node/l1sequencer/enclave_signer.go
+++ b/node/l1sequencer/enclave_signer.go
@@ -165,7 +165,7 @@ func (s *EnclaveSigner) probe() error {
 	if err := conn.SetDeadline(time.Now().Add(requestTimeout)); err != nil {
 		return fmt.Errorf("set deadline: %w", err)
 	}
-	defer conn.SetDeadline(time.Time{}) // clear on exit so signOnce can manage its own deadline
+	defer func() { _ = conn.SetDeadline(time.Time{}) }() // clear on exit so signOnce can manage its own deadline
 
 	if _, err := conn.Write([]byte{opGetPubkey}); err != nil {
 		return fmt.Errorf("write GetPubkey: %w", err)
@@ -220,7 +220,7 @@ func (s *EnclaveSigner) signOnce(conn net.Conn, data []byte) ([]byte, error) {
 	if err := conn.SetDeadline(time.Now().Add(requestTimeout)); err != nil {
 		return nil, err
 	}
-	defer conn.SetDeadline(time.Time{})
+	defer func() { _ = conn.SetDeadline(time.Time{}) }()
 
 	req := make([]byte, 1+hashLen)
 	req[0] = opSign
diff --git a/node/l1sequencer/signer.go b/node/l1sequencer/signer.go
index 4ad851304..e99726e7a 100644
--- a/node/l1sequencer/signer.go
+++ b/node/l1sequencer/signer.go
@@ -53,4 +53,3 @@ func (s *LocalSigner) Sign(data []byte) ([]byte, error) {
 func (s *LocalSigner) Address() common.Address {
 	return s.address
 }
-
diff --git a/node/l1sequencer/verifier.go b/node/l1sequencer/verifier.go
index b12be781d..f7df7fd95 100644
--- a/node/l1sequencer/verifier.go
+++ b/node/l1sequencer/verifier.go
@@ -34,7 +34,7 @@ type sequencerCursor struct {
 // History is loaded from L1 at construction and refreshed every 5 minutes.
 // All L1 reads use the finalized block tag to avoid ingesting reorged data.
 type SequencerVerifier struct {
-	mu     sync.Mutex
+	mu      sync.Mutex
 	history []bindings.L1SequencerHistoryRecord
 	cursor  sequencerCursor
 
@@ -127,7 +127,7 @@ func (c *SequencerVerifier) syncHistory() error {
 	return nil
 }
 
-// refreshLoop polls L1 until ctx is cancelled.
+// refreshLoop polls L1 until ctx is canceled.
 // Uses exponential backoff (10s -> 20s -> ... -> 5min) while history is empty,
 // then switches to the normal 5-minute interval once loaded.
 func (c *SequencerVerifier) refreshLoop(ctx context.Context) {
diff --git a/ops/docker-sequencer-test/Dockerfile.l2-node-test b/ops/docker-sequencer-test/Dockerfile.l2-node-test
index 04414cc53..4358089fe 100644
--- a/ops/docker-sequencer-test/Dockerfile.l2-node-test
+++ b/ops/docker-sequencer-test/Dockerfile.l2-node-test
@@ -16,7 +16,6 @@ COPY ./morph/node/go.mod ./morph/node/go.sum /polyrepo/morph/node/
 COPY ./morph/common/go.mod ./morph/common/go.sum /polyrepo/morph/common/
 COPY ./morph/bindings/go.mod ./morph/bindings/go.sum /polyrepo/morph/bindings/
 COPY ./morph/contracts/go.mod ./morph/contracts/go.sum /polyrepo/morph/contracts/
-COPY ./morph/oracle/go.mod ./morph/oracle/go.sum /polyrepo/morph/oracle/
 COPY ./morph/tx-submitter/go.mod ./morph/tx-submitter/go.sum /polyrepo/morph/tx-submitter/
 COPY ./morph/ops/l2-genesis/go.mod ./morph/ops/l2-genesis/go.sum /polyrepo/morph/ops/l2-genesis/
 COPY ./morph/ops/tools/go.mod ./morph/ops/tools/go.sum /polyrepo/morph/ops/tools/
diff --git a/ops/docker-sequencer-test/Dockerfile.tx-submitter-test b/ops/docker-sequencer-test/Dockerfile.tx-submitter-test
index c38575bd5..09bdf7873 100644
--- a/ops/docker-sequencer-test/Dockerfile.tx-submitter-test
+++ b/ops/docker-sequencer-test/Dockerfile.tx-submitter-test
@@ -11,7 +11,6 @@ COPY ./morph/node/go.mod ./morph/node/go.sum /polyrepo/morph/node/
 COPY ./morph/common/go.mod ./morph/common/go.sum /polyrepo/morph/common/
 COPY ./morph/bindings/go.mod ./morph/bindings/go.sum /polyrepo/morph/bindings/
 COPY ./morph/contracts/go.mod ./morph/contracts/go.sum /polyrepo/morph/contracts/
-COPY ./morph/oracle/go.mod ./morph/oracle/go.sum /polyrepo/morph/oracle/
 COPY ./morph/tx-submitter/go.mod ./morph/tx-submitter/go.sum /polyrepo/morph/tx-submitter/
 COPY ./morph/ops/l2-genesis/go.mod ./morph/ops/l2-genesis/go.sum /polyrepo/morph/ops/l2-genesis/
 COPY ./morph/ops/tools/go.mod ./morph/ops/tools/go.sum /polyrepo/morph/ops/tools/
diff --git a/ops/docker-sequencer-test/run-test.sh b/ops/docker-sequencer-test/run-test.sh
index e36e0b572..68484129f 100755
--- a/ops/docker-sequencer-test/run-test.sh
+++ b/ops/docker-sequencer-test/run-test.sh
@@ -340,7 +340,7 @@ start_l2_test() {
     
     # Start L2 execution nodes
     log_info "Starting L2 execution nodes..."
-    $COMPOSE_CMD up -d morph-el-0 morph-el-1 morph-el-2 morph-el-3 sentry-geth-0
+    $COMPOSE_CMD up -d morph-el-0 morph-el-1 morph-el-2 morph-el-3 sentry-el-0
     
     sleep 5