SuperDummy – 7DTD Prefab Studio

Added new prefab creation with optional starting ground.
Added block placement, Move, Duplicate, Pick, Delete, rotation and variants, with previews and Undo/Redo.
Added Save/Save As, unsaved-work prompts and clearer saved-state feedback.
Added the block Library, Quick Blocks and separate Player/developer block filters.
Added Open/Closed and Lock controls for supported non-powered doors, shutters, hatches, gates and drawbridges.
Added supported light-state and writable sign/crate text editing.
Added basic sleeper-point and spawn-area editing, difficulty settings and an explained difficulty estimate.
Added world-location choices and advanced tag editing in Prefab Settings.
Added road-exit creation, duplication, Move/Resize, edge snapping and connection previews.
Added optional mod-pack export with biome choices, reusable export settings and installation guidance.
Improved ground-level controls, saved-size previews and empty-margin handling.
Improved camera controls, dialogs, recent-prefab access and the built-in beginner guide.
Fixed affected window materials, door geometry and chain-link block offsets.
Fixed cases where old marker bounds kept unnecessary empty borders in saved prefabs.
Known limits: no block painting, water editing, mod-added block loading or emergency autosave/crash recovery.
Some game mechanisms remain unsupported, and very large prefabs may have loading or editing problems. Save often and keep backup copies.

Improved block attachment using full grid cells and a highlighted connection face.
Fixed selection of thin and rotated shapes.
Improved open-door targeting near neighbouring blocks.
Added a clearer amber rotation guide for mouse-wheel rotation and Ctrl tilting.
Made Esc cancel scene tools and return to Select; right-click no longer cancels placement.
Improved road-exit and sleeper-volume handles, editing panels and right-click Edit menus.
Removed the requirement for block Edit mode when editing road exits and sleeper volumes.
Fixed area outlines and helpers remaining visible after hiding their layers.
Added configurable shared Undo/Redo step and memory limits in Settings > General.
Added compact history counters on the status bar, with Undo/Redo commands in Tools.
Added a clear reminder before saving a prefab without location tags.
Fixed blank Library thumbnails, including the Wood material family.
Kept the Inspector hidden on the Welcome screen when no prefab is open.
Added a 254-layer editor compatibility profile while preserving oversized imports.
Updated built-in help and made optional development support easier to find.
Known limits remain: no painting, water editing, mod-added block loading or emergency autosave/crash recovery. Save regularly and keep backup copies.

Added a dedicated Paint workspace with Paint, Area, Fill, Mosaic, Pick and Eraser tools.
Added continuous painting and erasing with live previews and one Undo step per stroke.
Added Face/Block coverage, area stamp shapes, adjustable sizes and connected-surface options.
Added a starting-plane lock and horizontal/vertical painting directions.
Added image mosaics using existing game paints, with colour/grayscale, fitting, detail and blending options.
Added a draggable ruler, laser level and construction guide planes with metre scales.
Added number-pad camera views, orthographic projection and saved per-prefab camera views.
Added compact right-click settings menus for painting tools.
Improved Inspector organisation, remembered width/tab and the full-width status bar.
Fixed mouse capture when opening dialogs during camera flight.
Fixed Undo/Redo putting away placement tools and unsafe Move/Duplicate source retention.
Fixed orthographic depth clipping and measurement overlay issues.
Shape searches in the V picker are now remembered during the program session.
Updated the built-in beginner guide and tool instructions.