persp-projectile VS treemacs

I am currently trying with perspective rather than persp-mode, as it segregates the buffer list as I like (#1 above). I've got projectile with persp-projectile, and that seems to give me what I need for project navigation (#2 probably, still not 100%). I get some help in my mode line for project focus (#3, partially).

Aye. I often have two interdependent projects I work on simultaneously, and I use a lot of persp-projectile (https://github.com/bbatsov/persp-projectile). I would love to try project.el but sadly it seems like it doesn't integrate with perspective.el yet.

I also use purely emacs for "commercial programming" (as you refer to it) and for managing multiple projects I use projectile + perspective + persp-projectile.

I had my own rolled version of this in my config until recently when I swapped to perspective and perspective-projectile.

Im trying to find any, but everything I have is https://github.com/Alexander-Miller/treemacs and https://github.com/alphapapa/org-sidebar which is not what im looking for. Please help!

I found the solution on Treemacs github https://github.com/Alexander-Miller/treemacs/issues/610

But I'm rethinking about my approach, as tab-bar-mode would give me nice visual help (#3), and it seems difficult to recover a perspective using perspective, and persp-mode may be a better fit in that sense (#4). The Treemacs integration isn't working for me either, and I get the same list of file trees for all perspectives -- I'm pretty sure I'm doing something stupid, but this was handled nicely with Doom Emacs's workspace support (#5). But perspective seems to work best for segregated buffer list (#1).

I'm not sure if it is possible. Have you tried it using one of the configuration variables (see the github-page), for example treemacs-default-visit-action ? Maybe you find some help in closed or open issues.

I've not used Sublime Text, but I think treemacs fits what you are looking for

https://github.com/Alexander-Miller/treemacs

For table of content you can use treemacs. It's a very capable package and can do much more, especially for code projects.

On Treemacs' github repository, there is a description:

Update treemacs. Treemacs used the deprecated make-obsolete interface in versions before January 2021; as Emacs 28 made the new interface mandatory (the old one had been deprecated since like Emacs 23), older versions no longer work in Emacs 28.