Function cleanup

packages/backend/src/index.ts:88–117

(signal: string)

    let receivedSignal = false;

    const cleanup = async (signal: string) => {
        try {
            if (receivedSignal) {
                return;
            }
            receivedSignal = true;

            logger.info(`Received ${signal}, cleaning up...`);

            await repoIndexManager.dispose()
            await connectionManager.dispose()
            await repoPermissionSyncer.dispose()
            await accountPermissionSyncer.dispose()
            await auditLogPruner.dispose()
            await configManager.dispose()

            await prisma.$disconnect();
            await redis.quit();
            await api.dispose();
            await shutdownPosthog();

            logger.info('All workers shut down gracefully');
            signals.forEach(sig => process.removeListener(sig, cleanup));
            return 0;
        } catch (error) {
            Sentry.captureException(error);
            logger.error('Error shutting down worker:', error);
            return 1;
        }
    }

    signals.forEach(signal => {
        process.on(signal, (err) => {