Fix
- /webcam and the Camera permission now work. The app is signed with the hardened runtime, which requires a camera entitlement that was missing, so macOS blocked the camera and never listed the app. The entitlement is now included.
After updating, open Settings → Commands and click Grant next to Camera (or send /webcam) to get the macOS prompt. KeepMeUp then appears in System Settings → Privacy & Security → Camera.
The app is not notarized, so open it the first time with right-click → Open.