Darken secondary and muted text colors to improve readability across the UI.

Co-authored-by: Cursor <cursoragent@cursor.com>

gramora/Utilities/AppTheme.swift

@@ -17,8 +17,8 @@ enum AppTheme {
     static let sidebarBackground = Color.white
     static let cardBackground = Color.white
     static let textPrimary = Color(red: 0.10, green: 0.14, blue: 0.22)
-    static let textSecondary = Color(red: 0.45, green: 0.50, blue: 0.56)
-    static let textMuted = Color(red: 0.62, green: 0.66, blue: 0.70)
+    static let textSecondary = Color(red: 0.28, green: 0.32, blue: 0.38)
+    static let textMuted = Color(red: 0.42, green: 0.46, blue: 0.50)
     static let border = Color(red: 0.78, green: 0.82, blue: 0.87)
     static let inputBorder = border