Code Review

This pull request introduces three new custom brushes—Jelly Wobble, Pressure Wave, and Shading Pencil—along with their associated vector drawables and raw resources, and adds a pencil texture to the bitmap store. Review feedback recommends improving the formatting of the textureResources map for readability, externalizing hardcoded brush names to string resources for internationalization, and removing version suffixes from resource filenames to adhere to standard naming conventions.