feat(log): disable user access log recording

- 移除全局用户访问日志采集中间件与批写入 writer（risk_control 包整包删除），
  不再写入 w_user_access_logs；存量数据与管理端访问日志统计页面保留
- 日志库迁移任务不再排空用户访问日志队列，状态接口不再展示其缓冲队列统计
- 迁移测试的系统配置 seed 计数断言更新为当前实际值（86 → 95），
  注释改为提示新增配置 seed 时同步更新

internal/apps/admin/status/clickhouse.go

@@ -9,7 +9,6 @@ import (
 	"net/http"
 
 	"github.com/Rain-kl/Wavelet/internal/apps/openflare/chwriter"
-	"github.com/Rain-kl/Wavelet/internal/apps/risk_control"
 	"github.com/Rain-kl/Wavelet/internal/infra/config"
 	"github.com/Rain-kl/Wavelet/internal/infra/persistence/batchwriter"
 	"github.com/Rain-kl/Wavelet/internal/model"
@@ -132,6 +131,5 @@ func collectBatchWriterStats() []batchwriter.Stats {
 	if out == nil {
 		out = make([]batchwriter.Stats, 0, 1)
 	}
-	out = append(out, risk_control.LogWriterStats())
 	return out
 }