Add stone variants, sky structures and Sky‑Citizen NPCs

I hope Minecraft can expand building blocks and world‑generation content. First, add missing variants for existing stone blocks. Following Cinnabar and Sulfur’s design, add polished, brick, chiseled forms plus stairs, slabs, walls, pillars and stone trapdoors for Calcite, Amethyst Block, Smooth Basalt, Quartz, Granite, Diorite, Andesite, Netherrack and End Stone. These lack decorative forms and limit building choices. Second, add seven new complete stone sets: Chalk, Shale, Gabbro, Limestone, Alabaster, Gneiss, Rhyolite. Every stone includes raw, polished, brick, chiseled blocks plus matching stairs, slabs, walls and pillars for sky ruins, traditional towns and city builds. Third, add solid semi‑transparent milky‑white Cloud Block. It reduces fall damage for floating platforms and sky walkways. Fourth, add sky‑themed world generation. Spawn abandoned Ancient Sky Cities on floating islands at Y=220‑280, similar to Ancient City scale. Add small livable Sky Villages with complete functional buildings. Fifth, implement Sky‑Citizen NPCs, different from vanilla villagers. They have unique costumes, with professions: craftsman, sky navigator, astronomical priest, floating farmer. Small villages have chiefs, large sky cities have governors. These additions expand building materials and enrich sky‑related survival content. Thank you for reading this suggestion.