fix(openflare): ClickHouse count scan and dashboard traffic metrics

- Scan ClickHouse count()/countIf() aggregates as uint64 before int64 conversion
- Fix access log list count, region stats, and delete pre-count queries
- Aggregate dashboard 24h traffic totals from hourly trend buckets
- Show current hour value in traffic trend chart summary
- Rename docker-compose service to openflare
- Remove redundant config preview section from performance page

internal/repository/analytics/clickhouse_count_test.go

@@ -0,0 +1,54 @@
+// Copyright 2026 Arctel.net
+// SPDX-License-Identifier: Apache-2.0
+
+package analytics
+
+import (
+	"math"
+	"testing"
+)
+
+func TestSafeInt64Count(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name  string
+		count uint64
+		want  int64
+	}{
+		{name: "zero", count: 0, want: 0},
+		{name: "small", count: 42, want: 42},
+		{name: "max int64", count: math.MaxInt64, want: math.MaxInt64},
+		{name: "overflow clamps", count: math.MaxUint64, want: math.MaxInt64},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			if got := safeInt64Count(tt.count); got != tt.want {
+				t.Fatalf("safeInt64Count(%d) = %d, want %d", tt.count, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestSafeUint64Count(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name  string
+		count int64
+		want  uint64
+	}{
+		{name: "zero", count: 0, want: 0},
+		{name: "positive", count: 42, want: 42},
+		{name: "negative clamps", count: -1, want: 0},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			if got := safeUint64Count(tt.count); got != tt.want {
+				t.Fatalf("safeUint64Count(%d) = %d, want %d", tt.count, got, tt.want)
+			}
+		})
+	}
+}