Add 3 new DayViewStyles: 3D, Motion, and Micro

- **3D Style**: Cards with layered shadows and perspective depth,
  floating icons with highlights, and 3D text shadows

- **Motion Style**: Accelerometer-driven parallax effect using
  CoreMotion. Floating orbs and elements shift as device tilts

- **Micro Style**: Ultra compact single-line entries for maximum
  density. Tiny dots, abbreviated dates, and minimal spacing

Each style includes:
- Entry view implementation in EntryListView.swift
- Section header in DayView.swift
- Preview icon in CustomizeView.swift

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Shared/Models/UserDefaultsStore.swift

@@ -43,6 +43,9 @@ enum DayViewStyle: Int, CaseIterable {
     case pattern = 14     // Mood icons as repeating background pattern
     case leather = 15     // Skeuomorphic leather with stitching
     case glass = 16       // iOS 26 liquid glass with variable blur
+    case threeD = 17      // 3D card with perspective and depth
+    case motion = 18      // Accelerometer-driven parallax effect
+    case micro = 19       // Ultra compact single-line entries
 
     var displayName: String {
         switch self {
@@ -63,6 +66,9 @@ enum DayViewStyle: Int, CaseIterable {
         case .pattern: return "Pattern"
         case .leather: return "Leather"
         case .glass: return "Glass"
+        case .threeD: return "3D"
+        case .motion: return "Motion"
+        case .micro: return "Micro"
         }
     }