Undertale Save Star

• Added a placeable Save Star block with a glowing 2D star sprite that always faces the player and gently bobs to feel like the Undertale save point.
• Interacting opens an Undertale-style screen that shows your name, level, biome, and exact coordinates with Save/Cancel choices. Save sets your respawn point at the star and plays a short determination cue; Cancel simply closes the screen.
• Works with any hand (item or empty) and is available in the Functional Blocks tab; it also drops itself when broken and has a crafting recipe using gold ingots surrounding glowstone dust.
• Client-only pieces (screen, renderer) stay isolated in client packages so servers stay clean; shared code avoids client classes entirely.
• Textures/models are bundled for the star billboard and item icon, plus language/loot/recipe data for immediate in-game use.

Notes and suggestions

• The save action currently sets your spawn at the star’s location; extend SaveStarMenu.clickMenuButton if you want extra effects (heals, buffs, particles, custom messages).
• Biome and location labels use raw registry names for clarity; swap them for localized components if you prefer more thematic text.