Totally feel your pain.The two solutions that worked for me are FontBase, which is freemium (free is likely all you need) and all my fonts show up and High-Logic MainType, which is also freemium. I use the free edition of it to load the fonts I use in a project and then they show up. NexusFont is also a good free alternative but I find it fiddly on Windows. YMMV.
Hi Pablo,
Welcome to the forum.
At the moment our plugin support is still being developed and our devs don't have any current plan to release a plugin API for third party creators. Some users have reported some font managers (Right Font and Font Explorer.) do auto activate the fonts with our apps.
Visible bleeds are currently only available in our Affinity Publisher 1.7 beta, but they should be added to our others apps as well.
On the Swatches panel when you switch a Pantone palette, there is a search field at the bottom for you to enter a Pantone colour code. You can also change the appearance to a list if you wanted to increase the size of the panel.
You can create a Document palette, if you then switch to a Pantone palette and select a swatch, it will be added to the Document palette.