add basic search to resource tree

[aayushkdev]

#1840

Screencast_20251022_175922.webm

[tdruez]

@aayushkdev Off to a great start!

There were a lot of changes implementing #1919 and #1945

I would suggest that you start a new branch from main and rebase those changes there.

Regarding the review:

• The "X" link should not be there if nothing has started
• Search box shows overflow above everything
• I'm not sure about displaying 2 lines per entry, simply display the whole path?
• Add background on mouse hover
• Add up/down keyboard navigation
• Add a "t" keyboard shortcut to set the focus in the search field