Max temp link uses must be at least 1
Saving Files settings failed because symlink_max_uses was less than 1 or not a valid number.
Why this happens
Prevents zero/empty max-use caps on temp download grants. Paired with the 100000 upper bound.
Diagnose and fix
1. Set Symlink max uses to at least 1.
2. Use a whole number (not empty/NaN).
3. Save and mint a test link to confirm.
4. Runtime may clamp invalid DB values to a default if something slipped through.