refactor(clickhouse): route of_node_access_logs through analytics repository

Move all ClickHouse DML for OpenFlare node access logs into
internal/repository/analytics; model layer keeps domain aggregation and
in-memory test store via a thin adapter. Aligns with goose-managed DDL
and openflare database startup dependency.

openflare-server/internal/repository/analytics/node_access_log_test.go

@@ -0,0 +1,51 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package analytics
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/Rain-kl/Wavelet/internal/db"
+	analyticsmodel "github.com/Rain-kl/Wavelet/internal/model/analytics"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func TestBatchInsertNodeAccessLogs_Empty(t *testing.T) {
+	err := BatchInsertNodeAccessLogs(context.Background(), nil)
+	require.NoError(t, err)
+}
+
+func TestBatchInsertNodeAccessLogs_UsesModelBatchSQL(t *testing.T) {
+	ctx := context.Background()
+	mockBatch := &mockBatch{}
+	mockConn := &mockConn{
+		batch:      mockBatch,
+		batchQuery: analyticsmodel.NodeAccessLog{}.BatchInsertSQL(),
+	}
+	db.SetChConnForTest(mockConn)
+	t.Cleanup(func() { db.SetChConnForTest(nil) })
+
+	loggedAt := time.Now().UTC()
+	err := BatchInsertNodeAccessLogs(ctx, []analyticsmodel.NodeAccessLog{
+		{
+			NodeID:     "node-a",
+			LoggedAt:   loggedAt,
+			RemoteAddr: "1.1.1.1",
+			Region:     "US",
+			Host:       "example.com",
+			Path:       "/alpha",
+			StatusCode: 200,
+			CreatedAt:  loggedAt,
+		},
+	})
+	require.NoError(t, err)
+	assert.True(t, mockConn.prepareCalled)
+	assert.Equal(t, analyticsmodel.NodeAccessLog{}.BatchInsertSQL(), mockConn.preparedQuery)
+	assert.True(t, mockBatch.sendCalled)
+	require.Len(t, mockBatch.rows, 1)
+	assert.Equal(t, "node-a", mockBatch.rows[0][1])
+}