Items Organisator

Tab hit-test fixed for multi-page packs

Right-clicking a tab header could move the contents of vanilla Colored Blocks instead of the clicked tab. Forge positions each tab within its own page, so tabs on different pages share the same hitbox - and the old code tested the whole registry in registration order, letting the first-registered tab win for any given slot. The hit test is now scoped to getCurrentPage().getVisibleTabs(), the exact set the screen renders.

Validated in game across random whole-tab moves on a 280-mod, multi-page pack (integrated server). A dedicated client/server split has not been through a full test pass yet - hence the beta channel.

Also removes a leftover diagnostic probe that flooded the log on every tab rebuild.