OmniPanel v18.5.302 - Punishment X Timer + Command Center Upgrade

- Repaired temporary-ban duration parsing and overflow handling.
- Added restart-safe temporary-ban persistence in bans.properties.
- Added periodic and exact expiry cleanup with native pardon recovery.
- Added custom composite durations such as 1d 12h 30m.
- Added configurable minimum, maximum, cleanup interval and duration buttons.
- Added exact expiry and remaining-time information throughout Punishment X.
- Active timed bans are sorted by soonest expiry.
- Expired audit rows are shown as completed instead of active.
- Added Punishment X, Temp Ban Timers, Kit Manager, Event Studio and Rules to real Command Center slots.
- Removed meaningless yellow filler slots where these features are now placed.
- Preserved the existing latest systems and used no old-source revert or duplicate punishment listener.
