【运维发布】活动复盘：参与率与产出 ROI 的会后跟踪

---活动的指标预登记：开跑前定好看什么
function Review.register(actId, metrics)
    -- metrics: 参与率、人均产出、成本、留存提升
    Review.books[actId] = {
        metrics = metrics,
        startedAt = os.time(),
        status = "running",
    }
end

---活动的实际数据采集
function Review.collect(actId)
    local book = Review.books[actId]
    local m = book.metrics
    book.actual = {
        joinRate = Review.joinRate(actId),
        output = Review.totalOutput(actId),
        cost = Review.totalCost(actId),
        d7 = Review.retention7(actId),
    }
    return book
end

---复盘结论的跟踪：改进项的执行核验
setontimerex(117, 86400)
function Review.track()
    for id, book in pairs(Review.books) do
        if book.status == "reviewed" then
            for _, act in ipairs(book.actions or {}) do
                if not act.done
                    and os.time() > act.deadline then
                    Ops.alert("复盘改进项逾期",
                        id, act.task)
                end
            end
        end
    end
end