Where does “niche” come from?

I need to work through this chain carefully, but I notice there's a significant problem: the chain provided doesn't support a coherent etymology for English "niche." The chain shows: French niche ← Latin nidus ← Latin nescius ← Latin ne- ← English -ist ← Latin -ista ← Latin -ista ← Proto-Indo-European ne This chain is internally contradictory and doesn't make linguistic sense. Specifically: - Latin *nidus* (nest) would be the legitimate ancestor of French *niche* (which does mean a niche/nest-like space) - But then the chain diverges to *nescius* (ignorant), which shares only the *ne-* prefix with *nidus*, not a continuous etymological path - The inclusion of "English -ist" and "Latin -ista" in a chain for "niche"

niche (English): A cavity, hollow, or recess, generally within the...