Module development and code questions

I'm updating a D7 form for D8 and it makes a query to a public API for entities that could become Drupal nodes. Its performance is spotty, likely because as I see the Form API lifecycle that the form gets rebuilt as part of its security against hacks. And it seems to me that the re-run of the queries fail because of this.

Since the form is cached, could I cache the results of the first time the query is run so as to prevent timeout by the public API? Here's a subset of the form that is applicable.

Hi team

i would like to add a 'AND' condition to my view query, i've created a hook with views_query_alter, something like this:
 

Hi team

I've created a json rest api with views but i need to show items when its published, unpublished and all content, so when i use status = 1 show me published, status = 0 show me unpublished, but when i use status = All i need to show all content, but just this is not working, so i decided to use views_query_alter to change that, and delete this condition, but is not working.

This is how i'm using this hook:

In the course of trying to debug an issue in module printable (see issue queue!) I installed Xdebug and phpStorm. I am on Drupal 9.1.6, PHP 7.4.16 and Debian 10. My /etc/php/7.4/fpm/php.ini contains the following - regarding this: 

[xdebug]
zend_extension="/usr/lib/php/20200930/xdebug.so"
xdebug.log="/var/log/xdebug/log"
xdebug.mode=debug
xdebug.client_host=10.0.0.2

When trying to start debugging I get the message

Hi there, I'm not very surpried by this problem, but it seems that there is a prozess which renamed files (for example in the libraries or main folder) with the extension "._sa.zip". Actually it is enough to rename them by deleting this appendix. 

The files seem not really been zipped.

Of course this behavior brakes some parts of my Drupal installation. I'm using Drupal 8.9.13. Because I couldn't find this problem somewhere else, I have to ask here...

I am testing to create a compound field, but I can not make a field. The field shows, but can not be created. 

Folder strcture: