v0.6.0

## 🎉 Pascal Editor v0.6.0

A major feature release with new building tools, material editing, and quality-of-life improvements.

### ✨ Features

- **Multi-surface material system** — per-surface materials for walls, stairs, roofs with click-targeted 3D editing ([#266](https://github.com/pascalorg/editor/pull/266))
- **Automatic wall-room generation** — closed wall loops auto-split and generate slabs ([#255](https://github.com/pascalorg/editor/pull/255), [#257](https://github.com/pascalorg/editor/pull/257))
- **Stair-slab integration** — stair-driven cutouts in slabs and ceilings
- **Full curved fence support** + endpoint move tools ([#267](https://github.com/pascalorg/editor/pull/267))
- **Grid snap toolbar controls**
- **Auto ceilings** from wall loops
- **13 new material presets** — granite, marble, parquet, wallpaper, wood varieties

### 🐛 Fixes

- Robust undo/redo with nested history pause/resume — no more drag flooding
- WebGPU renderer init fixes, post-processing stability ([#233](https://github.com/pascalorg/editor/pull/233), [#234](https://github.com/pascalorg/editor/pull/234))
- Improved snapping across all geometry types
- Prevent crash when duplicating elements ([#239](https://github.com/pascalorg/editor/pull/239))
- Fix editor furnish item initialization ([#237](https://github.com/pascalorg/editor/pull/237))
- Move tools reliability improvements ([#259](https://github.com/pascalorg/editor/pull/259))
- Thumbnails, placement, and responsiveness improvements

### 📦 Packages

- `@pascal-app/core@0.6.0`
- `@pascal-app/viewer@0.6.0`
- `@pascal-app/editor@0.6.0`

### 🙏 Contributors

A huge thank you to our community contributors!

- [@sudhir9297](https://github.com/sudhir9297) — material system, wall-room generation, curved fences, stair cutouts, and more
- [@b9llach](https://github.com/b9llach) — WebGPU renderer fixes and post-processing stability
- [@RoshWarrier](https://github.com/RoshWarrier) — editor initialization fix
- [@nnhhoang](https://github.com/nnhhoang) — duplicate elements crash fix
- [@wass08](https://github.com/wass08) — move tools fixes

**Full Changelog**: https://github.com/pascalorg/editor/compare/v0.5.1...v0.6.0