fix(ui): resolve 'ambiguous use of cos' build failure under Swift 6.2 / latest Xcode

[wiradifit]

Problem

main currently fails to compile with latest-stable Xcode (Swift 6.2):

Sources/XPadUI/HarmonicWheelView.swift:201:41: error: ambiguous use of 'cos'
Sources/XPadUI/HarmonicWheelView.swift:202:? : error: ambiguous use of 'sin'

Swift 6.2 tightened overload resolution; cos(CGFloat(angle)) now matches multiple Foundation/Darwin declarations.

Fix

Pin both trig calls to the unambiguous Double overload and convert back:

let tx = center.x + CGFloat(cos(angle as Double)) * trailRadius
let ty = center.y - CGFloat(sin(angle as Double)) * trailRadius

Math is unchanged (angle is already numeric).

Verification

Built on macOS 15 / Xcode latest-stable via a clean CI run (public workflow run):

• With this patch applied, swift build reports zero errors in Sources/.
• The only remaining package error is unrelated pre-existing test-code isolation (Tests/XPadPracticeTests.swift:118), filed separately so this PR stays minimal.

Happy to adjust if you'd prefer Foundation.cos qualification or a different resolution style.

Summary by Sourcery

Bug Fixes:

• Resolve Swift 6.2/Xcode build failures caused by ambiguous trigonometric overloads in the harmonic wheel view.

[qodo-code-review]

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[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Updates the harmonic wheel’s trail-dot coordinate calculations to explicitly use Double-based cos/sin overloads, resolving the latest Xcode/Swift 6.2 build failure without changing the math or visual behavior. Verification confirms zero errors in Sources/; an unrelated pre-existing test isolation error remains.

File-Level Changes

Change	Details	Files
Disambiguate harmonic-wheel trigonometric calculations for Swift 6.2 while preserving the existing geometry.	Pass the angle to the Double overloads of cos and sin. Convert the results back to CGFloat before applying trail-radius positioning.	Sources/XPadUI/HarmonicWheelView.swift

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[sourcery-ai]

Hey - I've reviewed your changes and they look great!

Sourcery assessment

Approved.

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