System for a zero-combat dungeon crawl?

[Trekkin]

For fine/not fine/dead you might simply implement a 3 hit tier system, similar to D&D bloodied or not, but with an extra tier?

For easy equipment tracking - how about Black Hack's usage die rule (I think it comes from there). It goes something like when you use a thing roll a d12, on a 1or 2, next time roll a d10, and so on until d4, then whatever it is runs out.

For characters perhaps borrow the 5e skill list and gear section. Or really you could borrow this from anywhere. There's no doubt better gear books out there to throw at your players.

That's a pretty good approach to injury.

As for equipment tracking, one thing I'm working on is a coarse-grained integration of the Tsiolkovsky rocket equation to calculate the propellant costs of recovering from mistimed jumps, which means I need them to track real mass. I'm almost certainly going to use a variant on usage dice for tool wear, though.

And yeah, I might start with the 5e skill section and modernize it. A lot.