feat(theme): 디자인 토큰을 추가한다

SodaLive/Sources/Extensions/FontModifier.swift

@@ -1,5 +1,5 @@
 //
-//  KoreanFontModifier.swift
+//  FontModifier.swift
 //  SodaLive
 //
 //  Created by klaus on 1/23/26.
@@ -7,6 +7,52 @@
 
 import SwiftUI
 
+enum SodaTypography {
+    case heading1
+    case heading2
+    case heading3
+    case heading4
+    case body1
+    case body2
+    case body3
+    case body4
+    case body5
+    case body6
+    case caption1
+    case caption2
+    case caption3
+    
+    var size: CGFloat {
+        switch self {
+        case .heading1:
+            return 24
+        case .heading2:
+            return 22
+        case .heading3:
+            return 20
+        case .heading4:
+            return 18
+        case .body1, .body2, .body3:
+            return 16
+        case .body4, .body5, .body6:
+            return 14
+        case .caption1, .caption2, .caption3:
+            return 12
+        }
+    }
+    
+    var weight: SwiftUI.Font.Weight {
+        switch self {
+        case .heading1, .heading2, .heading3, .heading4, .body1, .body4, .caption1:
+            return .bold
+        case .body2, .body5, .caption2:
+            return .medium
+        case .body3, .body6, .caption3:
+            return .regular
+        }
+    }
+}
+
 private func resolvedLanguageCode(currentLocale: Locale) -> String? {
     if let raw = UserDefaults.standard.string(forKey: "app.language"),
        let option = LanguageOption(rawValue: raw),
@@ -42,7 +88,7 @@ private func japaneseFontName(for weight: SwiftUI.Font.Weight) -> String {
     }
 }
 
-struct KoreanFontModifier: ViewModifier {
+struct FontModifier: ViewModifier {
     @Environment(\.locale) private var locale
     let size: CGFloat
     let weight: SwiftUI.Font.Weight
@@ -63,7 +109,11 @@ struct KoreanFontModifier: ViewModifier {
 
 extension View {
     func appFont(size: CGFloat, weight: SwiftUI.Font.Weight = .regular) -> some View {
-        self.modifier(KoreanFontModifier(size: size, weight: weight))
+        self.modifier(FontModifier(size: size, weight: weight))
+    }
+    
+    func appFont(_ typography: SodaTypography) -> some View {
+        appFont(size: typography.size, weight: typography.weight)
     }
 }
 
@@ -79,4 +129,8 @@ extension Text {
         
         return self.font(.system(size: size, weight: weight))
     }
+    
+    func appFont(_ typography: SodaTypography) -> Text {
+        appFont(size: typography.size, weight: typography.weight)
+    }
 }