Custom entity appears in Ahorn, but not in-game

[heavy salmon]

I'm been trying to make my first custom entity - as of yet simply a red-tinted spring - appear in game for a couple of days, without success. No spring appears, visually or mechanically, nor does the mod appear in the Olympus listing (not sure if that's normal). I've gone over common mishaps: I have a different class in the mod extending EverestModule, a constructor with a valid signature, and a filepath that's presumably correct, as it matches to the one I'm using in the Ahorn plugin, which works and displays just fine. What might I be overlooking?

HelloWorld.cs (contains the custom entity class): https://pastebin.com/Pxz4URV5
EverestDummy.cs (empty class with the bare minimum for extending EverestModule): https://pastebin.com/R521WwZv
everest.yaml: https://pastebin.com/tua4WnGJ

[bright orbit]

Do you see anything relating to your mod or entity in log.txt?

[heavy salmon]

Oh hey, that's a handy file! There's a bunch of "failed loading entity" notifications when I open my test map...

...and my registering message looks a bit suspect: "(10/20/2022 14:11:45) [Everest] [Info] [core] Module _dir_Chao_Scrapmod 0.0.0 registered."

The actual name is "Chao_Scrapmod", version 1.0.0. I assume the dir in front means I've bungled something

[bright orbit]

Yeah, it usually does that when there is no everest.yaml

[heavy salmon]

On closer inspection, my file structure does look kind of jank. I think I took a wrong turn with Visual Studio somewhere. This is the mod folder, and the eponymous folder therein

Is that right? It doesn't look too right

[bright orbit]

The everest.yaml should be in Mods/Chao_Scrapmod directly yeah 😅