🧹 Simplify named colors mapping in DotWave

[jsem-nerad]

🎯 What: The predefined namedColors map inside _getRGBA in src/dotwave.js was simplified to store only the RGB values instead of repeating the string concatenation for alpha on every line.
💡 Why: This refactoring reduces repetitive string format code, avoids concatenating variables on every map entry, and keeps the configuration cleaner and easier to read or add to in the future.
✅ Verification: Ran Node syntax check on src/dotwave.js to ensure no errors were introduced. Requested code review, which passed.
✨ Result: Improved codebase readability and maintainability without altering the functional output of _getRGBA.

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PR created automatically by Jules for task 6076524489690250700 started by @jsem-nerad

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[Copilot]

Pull request overview

This PR refactors the _getRGBA named color handling in DotWave to reduce repetition by storing only the RGB triplets in the namedColors map and appending alpha at return time. The same change is reflected in the bundled src/dotwave.min.js so distributed usage stays consistent.

Changes:

• Simplified _getRGBA named color map values from full rgba(...) strings to RGB triplets and centralized the alpha formatting.
• Updated src/dotwave.min.js to match the new _getRGBA behavior.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
src/dotwave.js	Refactors namedColors entries and returns rgba(${rgb}, ${alpha}) for named colors.
src/dotwave.min.js	Updates the minified build’s _getRGBA implementation to match the source refactor.

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