【前端接口】技能说明悬浮：技能详情卡片的前端实现

-- 技能悬浮：延迟弹出
local panel = GUI:GetParent("MainTop")
local hoverTimer, card
local function onSkillHover(idx, name)
    if hoverTimer then SL:UnSchedule(hoverTimer) end
    hoverTimer = SL:Schedule(function()
        card = GUI:Text_Create(panel, "SkillCard" .. idx, 0, 0,
            name .. " Lv3｜伤害 +45%｜冷却 8 秒\n下一级：伤害 +60%",
            260, 60)
        GUI:Attach_MainTop(card)
    end, 300)
end
local function onSkillLeave()
    if hoverTimer then SL:UnSchedule(hoverTimer) end
    if card then card:SetVisible(false) end
end

-- 卡片定位：边界回退
local player = class(actor)
local SCREEN_W = 1920
local CARD_W = 260
local function cardX(iconX)
    if iconX + CARD_W > SCREEN_W then
        return math.max(0, iconX - CARD_W)
    end
    return iconX + 20
end