local all = jarvis.memory.all()
local feeds = {}
for _, rec in ipairs(all) do
    if rec.key:sub(1, 4) == "rss." then
        table.insert(feeds, rec.key:sub(5))
    end
end

if #feeds == 0 then
    return jarvis.cmd.ok("Лент пока нет.")
end

return jarvis.cmd.ok("Подписан на: " .. table.concat(feeds, ", ") .. ".")