【后端接口】屏蔽名单临时解除：黑名单的暂停与恢复状态设计

local STATE = { active = 1, paused = 2, removed = 0 }
local function setBlockState(actor, targetName, state)
    local player = class(actor)
    local key = "BLK_" .. targetName
    if state == STATE.removed then
        setplayvar(actor, "HUMAN", key, "", 1)
        sendmsg(actor, 0, "已将" .. targetName .. "移出黑名单")
        return
    end
    setplayvar(actor, "HUMAN", key, state, 1)
    sendmsg(actor, 0, state == STATE.active and "屏蔽已恢复" or "屏蔽已暂停")
end

local function canDeliver(actor, fromName)
    local player = class(actor)
    local st = tonumber(getplayvar(actor, 2, "BLK_" .. fromName) or "0")
    if st == STATE.active then
        return false
    end
    return true
end