- WIN32 subsystem, D3D11 standalone rendering (no UILayer dependency) - Scene tree panel, Inspector panel, Console panel, Viewport - Chinese text via glyph_atlas (GDI GetGlyphOutlineW + D3D11 texture atlas) - .ly file format: INI-style scene serialization (save/load) - Ctrl+S/Ctrl+O keyboard shortcuts - Depth test disabled for all 2D rendering