vort3

Well, maybe there's a way to make dolphin or other apps have transparency or blur, I'll be honest and say that I don't know.

But looking at the screenshot you posted, it's exactly the same thing I have. On the right it's Konsole and you can enable transparency and blur in Konsole settings without installing any additional software.

On the left you see Dolphin and it's not transparent or blurred. However, the menus of Dolphin are transparent and blurred. This is because in Plasma you have a desktop effect that makes all menus transparent and/or blurred, it's a global effect and applies to all menus.

I can't remember where it is exactly but you don't need to install any additional software, it's all built into Plasma.

At least, I have it in KDE + Arch, maybe other distros have slightly different versions of Plasma.

If this is indeed what you want, blurred menus, I can look up where it is enabled once I get to my laptop.

Can you please upload a screenshot of what you're trying to achieve?

Konsole has background blur by default and I use that.

I'd say there's nothing ridiculous in expecting FOSS thing to be as good as non FOSS, both are made by human after all, yes more work is done by paid developers than by enthusiasts, but there's nothing impossible about FOSS software being as good as non FOSS.

What's ridiculous is that people expect one software to behave the same as other software when the FOSS software does not imply in any way that it is a clone of a proprietary software and that it strives to behave the same way / be a direct replacemen. Like, yes, Inkscape is a great vector editor, but noone says it's an Illustrator clone. You can ditch Illustrator and use Inkscape, but it isn't a direct replacement, stuff will be different.

There are "free clones", like double Commander is a clone of Total Commander, and in this case it is valid to expect one to behave exactly like another.

This is some mind blowing UX right here.

+1 for postfix.

I may also want to type out someone's email NOT in an email client, while in terminal, for example in bash shell or in vim.

Is there Google and/or Outlook integration into a terminal (Konsole) I'm not aware of?

Because email clients are not the only place where I enter emails. And not every program supports address book integration.

I might be filling out online forms and enter someone's email or phone number or any other long string such as full name I can't remember how to properly spell.

Well you can have 1 letter sequences which is almost what you want. For example have a sequence that consists of single "u" key that composes into "ü" or something similar.

I don't know if it's the same in every DE/Distro, but in KDE I'm pretty sure I can both hold the Compose key and type sequences, or press Compose key once and then type a sequence.

But can't check right now.

Could you please ELI5 what are spill ranges?

Tbh I don't have an answer and this isn't what you're looking for, but have you heard of Compose key? I don't know what is kmomad, but I'm pretty happy with my custom compose sequences.

To be honest I can't give any answer, but I tried Paisa and it felt sketchy, so I decided to use GNUCash.