villagercomfort.mixin.json lists "thirst.refmap.json" as its mixin refmap, a file which does not exist and seems to be unrelated to Villager Comforts. As a result your actual mixin file, VillagerMixin.java, goes unused, and the mod does nothing.

Here's the relevant file, copied from this repository:

{
  "required": true,
  "package": "dev.ghen.villagercomfort.core.mixin",
  "compatibilityLevel": "JAVA_17",
  "refmap": "thirst.refmap.json",
  "mixins": [
    "VillagerMixin"
  ],
  "client": [
  ],
  "minVersion": "0.8"
}

I've verified that this is the issue by manually changing the refmap value to "villagercomfort.refmap.json" in my installation of the mod. After doing so and checking the data of various villagers, I saw that the values for room size, comfort, etc. were being properly modified when the villager slept or worked.

It seems you accidentally placed some files for another mod in the repository before uploading it to Curseforge and they're interfering with this one.