UI Polish & Isometric Grid — RP2D Virtual Tabletop Steam update #489868

This update focuses on clarity, feedback, and scene usability. Workshop uploads feel much clearerSelected mod folders now show detected pack content directly in the upload window.Valid detected content turns green so it is easier to see when a pack is ready.Detection now keeps scanning valid folders even if extra root files are present.The upload popup layout was cleaned up to prevent overlap and button issues. Deck and character sheet UI got cleanerDeck editor previews now recover saved cover images more reliably, including older cover fields and media-based images.Character sheet hover tooltips now fit their text more tightly, reducing oversized popups on attributes, equipment, and inventory items.Top-bar dropdown menus now highlight their entries more consistently on hover. Scene tools are more stableScenes can now switch between square and isometric grid projection while keeping fog,...