Very nice. I enjoyed a lot the graphic and sound design (enough to write a fan semi-article about made-up theory surrouding the place ). However, there is an "exploit" that lets you click your own place once you are in L-space and just wait that the Librarian ghosts go away. You can do this as many times you want without any loss of sanity , and the game becomes too much of clicking yourself and waiting for their random movements (and potentially very easy). If this is unintended clicking your same space should be invalid. If its intended it should cost 1 sanity like moving. If not, perhaps another difficulty where you can't just wait still would be nice. I stopped playing because once you know this you cannot ignore it and you spend over half the game clicking yourself for free advantage. (well at least, if your resolve is already at 0)
Anyways, overall good job.