Fix widget layout clipping and add comprehensive widget previews

- Fix LargeVotingView mood icons getting clipped at edges by using
  flexible HStack spacing with maxWidth: .infinity
- Fix VotingView medium layout with smaller icons and even distribution
- Add comprehensive #Preview macros for all widget states:
  - Vote widget: small/medium, voted/not voted, all mood states
  - Timeline widget: small/medium/large with various data states
- Reduce icon sizes and padding to fit within widget bounds
- Update accessibility labels and hints across views

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

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

Shared/Views/LockScreenView.swift

@@ -31,7 +31,7 @@ struct LockScreenView: View {
                 // App icon / lock icon
                 VStack(spacing: 20) {
                     Image(systemName: "lock.fill")
-                        .font(.system(size: 60))
+                        .font(.largeTitle)
                         .foregroundStyle(.secondary)
 
                     Text("Feels is Locked")