Update admin theme palette and heading font

tamagui.config.ts

@@ -8,7 +8,7 @@ const tokens = {
   ...baseTokens,
   color: {
     ...baseTokens.color,
-    primary: '#4F46E5', // Indigo 600
+    primary: '#FF5A5F', // Brand Rose
     accent: '#F43F5E', // Rose 500
     accentSoft: '#E0E7FF', // Indigo 100
     success: '#10B981', // Emerald 500
@@ -34,7 +34,7 @@ const themes = {
     ...baseThemes.light,
     primary: tokens.color.primary,
     accent: tokens.color.accent,
-    background: '#F1F5F9', // Slate 100
+    background: '#FFF8F5', // Brand Cream
     backgroundHover: '#E2E8F0',
     backgroundPress: '#CBD5E1',
     backgroundStrong: tokens.color.surface,
@@ -60,7 +60,7 @@ const themes = {
     ...baseThemes.dark,
     primary: tokens.color.primary,
     accent: tokens.color.accent,
-    background: '#0B132B',
+    background: '#171219',
     backgroundHover: '#101A36',
     backgroundPress: '#132142',
     backgroundStrong: '#101A36',
@@ -102,12 +102,12 @@ const fonts = {
   },
   heading: {
     ...defaultConfig.fonts.heading,
-    family: 'Playfair Display',
+    family: 'Fraunces',
     weight: sharedWeights,
   },
   display: {
     ...defaultConfig.fonts.heading,
-    family: 'Playfair Display',
+    family: 'Fraunces',
     weight: sharedWeights,
   },
 };