Style Builder Example

This example shows how a reusable base Style is composed with an additional layer through merged(...), including layout and spacing escape hatches.

• File: examples/02_style_builder.rs
• Run:

cargo run --example style_builder

• Expected output: the merged padding, background, text color, width, constraints, layout tokens, radius, and shadow values.

Why this exists: it demonstrates that Twill’s core abstraction is style composition, not framework-specific components, and that arbitrary/custom values still live inside the same typed builder surface.