- Implemented a new crate `hcie-watercolor-brushes` containing watercolor brush presets and a procedural splat preview renderer.
- Integrated watercolor brushes into the iced GUI's Brushes panel, adding a new category for watercolor brushes.
- Updated the `BrushCategory` enum to include `Watercolor` and modified the rendering logic to display watercolor presets.
- Added functionality to generate watercolor splat thumbnails using a noise-based algorithm.
- Ensured that existing brush styles and engine crates remain unmodified, adhering to project constraints.
- Implemented a new module for managing build IDs at runtime.
- Introduced functions to find the repository root, check for stale locks, and increment the build ID.
- Ensured atomic writes to the build ID file with proper locking mechanisms.
- The build version string is formatted as "0.1.0+build.{build_id}" for display purposes.
phantom