don't load all the tabs when starting up, only the current one. Defer the loading of the others when switching to them.

as Gnuserland pointed out, it's and old thing taken from the web, used to distinguish between normal text and links. In Gemini we only have link-lines, so the underline is redundant. It's still possible to restore the styling by adding something like the following in ~/.telescope/config style line.link attr underline

while there also simplify a bit the handling of the pair for tabs/current-tab.

This way, commands like toc, link-select & co will jump to the line and make that the first line in the window.

As suggested by Gnuserland, thanks!