## About The Pull Request
Using a (DCS) signal was a nice idea but it ran into the problem of spam
filters on telecomms machines, if each subscribed PDA is responsible for
sending the (PDA message) signal to themselves (and because there is
always at least 5 instances of head PDAs stored in `SSwardrobe`) only
the first one gets through before telecomms refuses to send the rest.
This moves it from a DCS signal registered on the fax machine and
handled on the PDA to a system where PDAs register themselves with the
fax machine and when it receives a fax it builds a single message signal
addressed to all the targets and sends that instead.
## Why It's Good For The Game
Fixes#96902
## Changelog
🆑
fix: fixed FaxBond not sending notifications when faxes are received
/🆑
## About The Pull Request
Adds an up that allows you to subscribe to any fax. Heads start with one
by default and they are subscribed to their office fax upon joining.
Later part involved creation of fax subtype specific to a head. So i
decided to also make those as a required map item for the purposes of
CI.
<details>
<summary>UI</summary>
<img width="435" height="552" alt="изображение"
src="https://github.com/user-attachments/assets/73b814d5-3009-4c76-a829-c01f021aecf4"
/>
</details>
its pretty simplistic, but i am not a UI designer, sorry
## Why It's Good For The Game
It really sucks when you wait for someones message but they never
respond to it because apparently they never visit their office and never
saw a paper over their fax if even if they responded, by the time you
get an answer you already forgot about it anyway. In general, it makes
paperwork experience relating to faxes more enjoyable (probably)
## Changelog
🆑
add: added a FaxBond app. Everyone can download it and use it on a fax
of their choice to be notified when it receives a message. Heads of
staff come with it preinstalled and automatically subscribed to a fax
inside their office.
/🆑
