I didn't realize that Ranpu required another homebrew class. I'd suggest that all cat prestige classes that depend on another homebrew class have a note about that (like what you've got for Phantom Cat).
As for spells:
Force Mine mentions Checked, that isn't actually a condition as far as I know.
Fort Cracker should mention how it interacts with wall spells like Wall of Stone/Force/etc.
Other than that everything seems fine, maybe some of them are underpowered.