A compact model would mostly be a smaller frame with 650C wheels instead of 700C. The catalog doesn't specify, but it probably had shorter crankarms for ground clearance and maybe smaller brake levers. Everything is geared towards a smaller individual.
It's nice to know that the fork is just painted black. I'd say it's a 1996 R700 that's been heavily modified over the years, unless that yellow was used on another model. I searched this site's database for 1996 models and no other yellow road bikes are on it.
I believe the catalog does in fact specify that the R700 is a “multi-sport 650C” bike that’s spec’s with Shimano 105 and 650C (571 mm rims) wheels. It’s in the component and geometry specs. It was convention back then to use 650C on smaller frames and TT bikes in general.
I’d suggest measuring the rim diameter before making any further plans because if it’s not a 650B (584 mm) or 700C (622 mm) capable frame, tire choices are considerably reduced. Particularly if you want to use the existing wheels.
Regardless of wheel size, I’d also be very surprised if you can pass a 30C CX tire. It’s barely doable with a slick tire and if the frame does in fact have TT geometry and runs 650C’s, it’s even less likely to pass such tires. I’m also not sure whether there is such a thing as a 650C CX tire.
If the rims are 650C, that may be the first thing to change verifying what wheel size the frame can handle. It may not clear 700’s but there’s a chance it can work with 650B’s (13 mm delta) without the brakes over reaching. Of course, once you go to a wider wheel diameter, clearance for tires is going to be reduced further yet.
The tires may also indicate if they are 650C’s (571-?? Markings) which would answer the question about the wheels and indicate this is very likely a May 1996 R700.
One last thought – I suspect the reason why the frame no longer appears to have TT geometry is possibly due to the non-original fork. If the fork is even 10 mm longer axle to crown, that will change the appearance and overall geometry of the bike.
I believe that this is exactly what Cannondale did earlier (say in 1993) in order to produce a TT bike. They’d basically take the same road frame, swap out the fork for one designed for 650B/C (shorter axle to crown) and run different sized wheels front and rear. With a lower stack, the ST and HT would now be more agressive and in line with a TT position.