CobbleGacha Expanded Alpha 3.7.38

Permanent banner control patch:
- Fixes the remaining editor guard that said "Permanent banner cannot be stopped".
- Permanent banners can now be manually STOPPED and STARTED.
- Stopping a permanent banner writes banner.<id>.enabled=false to the existing banner config.
- Starting it again writes banner.<id>.enabled=true.
- Missing enabled= defaults to true, so old configs remain backwards compatible.
- Standard still ships enabled and permanent by default, but admins can now disable, restart, edit, or delete it.
- visibleBanners now respects the enabled state for permanent banners instead of forcing them visible.
- The existing 3.7.35-3.7.37 deletion and strict custom-pool fixes remain intact.
- Scheduling permanent banners remains intentionally blocked; permanent means no automatic expiry while enabled.

No pull rates, pity, IV generation, 50/50, reward odds, card UI, or gacha animation behavior changed.
