Grid Inventory 2.1.4.2

• Fix items being droppable into a cell already covered by a multi-slot item's footprint in Sophisticated Backpacks / Sophisticated Storage grids. Sophisticated overrides slotClicked, clicked and mayPlace, so every existing Grid Inventory placement check was bypassed there — only the visuals were applied.
• Enforce the same rules for shift-click, hotbar swap and automation into Sophisticated storage grids, not just direct placement.
• Attach the storage-grid adapter on the server as well, so the footprint rules are authoritative instead of client-only.
• Recover pre-existing overlaps in container grids: an item already sitting inside another item's footprint stays visible and reachable (the oversized item clamps to a single cell) instead of becoming inaccessible.