[kumamaki]

Fixes #64.

What was wrong

The skill file had two categories of incorrect API references that would cause agent-generated code to fail to compile.

1. Glass.prominent does not exist

The file used .prominent as a Glass material style in several places. This property is not part of the shipping SDK on any platform (iOS 26, macOS 26, tvOS 26, watchOS 26) — confirmed against the SwiftUICore.swiftinterface files from both the macOS 26 and iOS 26 SDKs, and Apple's official documentation JSON.

The confusion likely came from mixing up two separate APIs:

• Glass material styles: .regular, .clear, .identity — these are the only three
• ButtonStyle variants: .buttonStyle(.glass) and .buttonStyle(.glassProminent) — these are real and unrelated

There is no "prominence level" on the Glass material. To make a glass surface appear more visually prominent, the correct approach is a stronger tint opacity.

2. GlassEffectStyle is not a type

The modifier signature and a helper function used GlassEffectStyle as the parameter type. The actual type is Glass. The parameter label was also wrong (style → glass) and the isEnabled: Bool = true parameter was missing from the signature entirely. The isEnabled parameter is confirmed by its presence in the official selector glassEffect(_:in:isEnabled:), which Apple's own developer forums surface in a visionOS error message.

What changed

Commit 1 — Glass.prominent

• "Prominence Levels" section renamed to "Available Styles"; documents all three real Glass statics with descriptions
• Added a note that tint opacity (not a non-existent prominence enum) is the right way to increase emphasis
• Tinting example: .prominent.tint(...) → .regular.tint(...)
• Segmented control example: selected-state .prominent.interactive() → .regular.tint(.accentColor.opacity(0.4)).interactive()
• Checklist item reworded away from "prominence levels"

Commit 2 — GlassEffectStyle

• Modifier signature: GlassEffectStyle → Glass, style → glass, added isEnabled: Bool = true
• Section heading: ### GlassEffectStyle → ### Glass
• glassEffectWithFallback helper: parameter type and internal reference updated to Glass

What was not changed

The .buttonStyle(.glass) and .buttonStyle(.glassProminent) examples are correct and untouched.

Test plan

• Paste any snippet from the updated "Available Styles" section into an iOS 26 / macOS 26 target — all compile without error
• glassEffectWithFallback compiles against iOS 26 SDK
• .buttonStyle(.glass) and .buttonStyle(.glassProminent) examples (unchanged) still compile

[Copilot]

Pull request overview

Fixes two incorrect API references in liquid-glass.md that would cause agent-generated code to fail compilation: the non-existent Glass.prominent material and the incorrect GlassEffectStyle type name in modifier signatures.

Changes:

• Replaces .prominent usages with .regular (optionally tinted) and documents the three real Glass statics (.regular, .clear, .identity).
• Corrects glassEffect signature to use Glass type, glass label, and adds the isEnabled parameter; updates glassEffectWithFallback helper accordingly.
• Reworks the checklist item and "Prominence Levels" section to reflect tint-opacity as the path to visual emphasis.