[LDS] Lazy Display System

- Settings clipboard: 
right-click a display block to copy all its settings onto the held item; placing it applies them automatically.
- Numeric slider input: 
click the slider value to type a number; Enter or clicking outside commits, Esc cancels.
- Self-drawn glass without AO:
the glass body uses a dedicated no-ambient-occlusion path so its shading stays clean.
- Mimic slot rules: 
the 7th slot accepts block items only, one item; shown on the Block page when the appearance is not NORMAL, rendered as that block in MIMIC, and labelled only in MIMIC.