I can't think of anything specific to 2006, but presuming you want to know about things that might apply to any C-Dory:
First of all, of course I would want a surveyor who knew what to look for. But then.... I would also have a list like you are making. Some of these things you may check yourself.
One nice thing about the 22 is that most things are pretty accessible and basic. There is not a lot hidden, with just a few exceptions (coring, under the cockpit sole if "your" boat has the built in flat sole, under the v-berth if no hatches there).
1) Parts of the hull, deck, cabinsides, and transom (and roof on some boats) are cored. There are many penetrations, any of which could potentially let water into the core and cause damage. So checking for a dry core is paramount. Wet core can be fixed, but can be time-consuming, expensive, or both. Tapping or a moisture meter can help to diagnose. This to me is the #1 thing to check out, by far.
2) Check rivets that hold rub rail onto boat. Is rail coming loose anywhere? You will probably see humps or small "globs" on the inside of the boat where the rivets are. Have any rivets broken through or are there leak trails? (Some owners have re-done these with machine screws.)
3) In a 2006... not sure if it may have the "rounded" cockpit sole that is actually the top of the bottom of the boat (which may or may not have a set of removable floorboards), or if it will already have transitioned to the "permanent" flat cockpit sole, but just know which you are looking at and inspect as much as you can (i.e. if there are floorboards, remove them and check underneath).
4) If the bottom is gelcoat, you can see and check everything over. If it's painted, try to at least find out what type of paint, but there is a slight mystery factor since you can't see under it (not that most bottom paint jobs aren't completely innocent, just that you can't see under them).
5) If there is an inspection port somewhere in the V-berth sole area (round hatch), open it and see if there is any water in there (there shouldn't be, but some boats have had leaks from the anchor locker drain/tabbing interface and/or the bow strip, and that's where the water ends up.
6) If the boat has a fuel-injected engine, then I think you can get a printout of things like hours, service points, etc. (from engine service/dealer).
7) If there is a trailer, don't forget to check it out (not that you would have).
Many other things are just "any boat" type stuff, of course.
Hope all goes well - exciting times!
Sunbeam