// پاکسازی روزانه‌ی دیتابیس کش پیام‌ها، تا بی‌نهایت بزرگ نشه
        $this->cleanupLoop = new PeriodicLoop($this->tickCleanupLoop(...), 'cleanup-tick', 3600.0);
        $this->cleanupLoop->start();
    }

    private function tickCleanupLoop(): bool
    {
        try {
            Store::cleanupOld(3); // فقط ۳ روز اخیر رو نگه دار
        } catch (\Throwable $e) {
            $this->logger('cleanup error: ' . $e->getMessage());
        }
        return false;
    }

    private function tickClocksLoop(): bool
    {
        try {
            $this->tickClocks();
        } catch (\Throwable $e) {
            $this->reportCrash('tickClocksLoop', $e);
        }
        return false; // false = ادامه بده به چرخه بعدی، true = تایمر متوقف بشه
    }

    private function tickActionLoop(): bool
    {
        try {
            $s = Store::load();
            $mode = $s['action_mode'] ?? null;
            $chatId = $s['action_chat_id'] ?? null;
            if ($mode && $chatId && isset(self::ACTION_MODES[$mode])) {
                $this->messages->setTyping(peer: $chatId, action: ['_' => self::ACTION_MODES[$mode]]);
            }
        } catch (\Throwable $e) {
            $this->logger('action tick error: ' . $e->getMessage());
        }
        return false;
    }

    private static array $lastUpdate = ['bio' => 0, 'name' => 0, 'channel' => 0];
    private static array $lastMinuteRendered = ['name' => '', 'bio' => '', 'channel' => ''];

    private function tickClocks(): void
    {
        $s = Store::load();
        $offset = (int) ($s['clock_offset'] ?? 0);

        $dtTehran = new DateTime('now', new DateTimeZone('Asia/Tehran'));
        if ($offset !== 0) {
            $dtTehran->modify(($offset > 0 ? "+{$offset}" : "{$offset}") . ' minutes');
        }
        $currentTehranMinute = $dtTehran->format('H:i');

        if ($s['time_name'] && ($currentTehranMinute !== (self::$lastMinuteRendered['name'] ?? ''))) {
            $this->updateNameClock($dtTehran);
            self::$lastMinuteRendered['name'] = $currentTehranMinute;
        }

        if ($s['time_bio'] && ($currentTehranMinute !== (self::$lastMinuteRendered['bio'] ?? ''))) {
            $this->updateBioClock($dtTehran);
            self::$lastMinuteRendered['bio'] = $currentTehranMinute;
        }

        if ($s['time_channel'] && $this->cfg()['clock_channel_id'] && ($currentTehranMinute !== (self::$lastMinuteRendered['channel'] ?? ''))) {
            $this->updateChannelClock($dtTehran);
            self::$lastMinuteRendered['channel'] = $currentTehranMinute;
        }
    }

    private function nextTz(string $which): array
    {
        $tzList = array_values($this->cfg()['timezones']);
        $labels = array_keys($this->cfg()['timezones']);
        $prop = "tzIndex" . ucfirst($which);
        $idx = $this->$prop % count($tzList);
        $this->$prop = $this->$prop + 1;
        return [$labels[$idx], $tzList[$idx]];
    }

    private function pickStyle(): string
    {
        $names = Fonts::styleNames();
        return $this->cfg()['random_font'] ? $names[array_rand($names)] : $names[array_rand($names)];
    }

    private function clockText(string $prefix, array $tzPair, ?DateTime $dt = null): string
    {
        [$label, $tz] = $tzPair;
        if ($dt === null) {
            $s = Store::load();
            $offset = (int) ($s['clock_offset'] ?? 0);
            $dt = new DateTime('now', new DateTimeZone($tz));
            if ($offset !== 0) {
                $dt->modify(($offset > 0 ? "+{$offset}" : "{$offset}") . ' minutes');
            }
        }
        $raw = $prefix . ' ' . $dt->format('H:i') . ' | ' . $label;
        return Fonts::apply($raw, $this->pickStyle());
    }

    private function updateBioClock(?DateTime $dt = null): void
    {
        try {
            $text = $this->clockText('🕐', $this->nextTz('bio'), $dt);
            $this->account->updateProfile(about: mb_substr($text, 0, 70));
        } catch (\Throwable $e) {
            $this->logger('bio update error: ' . $e->getMessage());
        }
    }

    private function updateNameClock(?DateTime $dt = null): void
    {
        try {
            $s = Store::load();
            $base = $s['name_clock_base'] ?? null;
            if ($base === null) {
                $me = $this->getSelf();
                $base = $me['first_name'] ?? 'User';
                $s['name_clock_base'] = $base;