Remove internal phase comments and format code

Strip all Phase references, TODO/FUTURE roadmap notes, and internal
planning comments from the codebase. Run Prettier for consistent
formatting across all Java files.

src/main/java/com/tiedup/remake/blocks/BlockCellDoor.java

@@ -9,7 +9,6 @@ import net.minecraft.world.level.material.MapColor;
 /**
  * Cell Door Block - Iron-like door that cannot be opened by hand.
  *
- * Phase 16: Blocks
  *
  * Features:
  * - Cannot be opened by clicking (requires redstone)