I don't think you're out of the woods just yet. I shocked a pool in less than a day last year but it wasn't green, had only been under minimum for maybe 8 hours, and had it's first spike of CC over .5ppm really... ever. Prior to that was 2 years of BBB. It knew how to behave, this pool.
Point being, just because it held for an hour or so now, doesn't mean it's going to continue to and it fell to 0 today which is not good ever, but especially while shocking. I'd continue to test and dose regularly tonight until bedtime, and then dose as appropriate plus a tip for overnight. I wouldn't even test CC tonight. Tomorrow morning, make sure to test and dose before the sun gets to it much. Then add back the CC test while you shock and test tomorrow. If you don't lose more than you normally would in a day (2-4ppm total), the CC goes down to <.5ppm, and the water is clear, try the OCLT. If anything else happens, rinse and repeat for another night => and so on till all the above are met.
I'll also add that clarity for shocking is not exactly subjective. "Clear" is rather a state of, "not unclear in any way". It's not clear till it's not unclear. Meaning, there's no doubt that nothing is clouding the water. "Crystal freakin sparkling perfectly crystal, you can tell the time on a wristwatch in the deep end clear" and "clear" are also not exactly the same thing (close, but no).
Here's why clear is important:
When algae dies it turns white/grey. Little corpses floating about in the water. They are like zombies and can return to life. The filter has to get a chance to capture them before they do so. This clouds up the water, and not always a whole lot. If you have a light, look at night, they'll be passing past it. Reducing chlorine levels gives them the opportunity to revive. This would be why the third criteria, clear water is often overlooked or subjectified. When you start to see through the water after having it go cloudy or green it can seem all kinds of clear, but it's still not unclear. Like reasonable doubt... err on the side of caution if there's any question about clarity and continue shocking.