Module serde_helpers 

Custom serde helpers for human-friendly YAML values.

Provides parsing and serialization for:

• Dimensions: "16pt", "20mm", "1in" → HwpUnit
• Percentages: "160%" → f64
• Colors: "#RRGGBB" → Color

Functions

format_color

Formats a Color as #RRGGBB.

format_dimension_pt

Formats an HwpUnit back to a pt string for YAML serialization.

format_percentage

Formats a percentage value back to string.

parse_color

Parses a color string in #RRGGBB format into Color.

parse_dimension

Parses a dimension string into HwpUnit.

parse_percentage

Parses a percentage string into f64.