feat: wardrobe screen with add/select/delete items (Android & iOS)

[jvsena42]

Summary

Implements the complete Wardrobe screen for both Android (Compose) and iOS (SwiftUI), matching the design in design/design.pen. This is the first user-facing feature — it includes the item grid, add item flow, multi-select with delete, and AI locked sheet, all adaptive for phone and tablet/iPad.

Changes

• Shared ViewModel (MVI): WardrobeViewModel with intents for loading, filtering, adding, selecting, and deleting items. Repositories now return Result<T> with runCatching.
• Koin DI: SharedModule, AndroidModule, IosModule, and KoinHelper for iOS initialization.
• Wardrobe screen: Adaptive grid (phone 2-col / tablet 3-col) with category filter chips, bottom nav bar, and FAB. Uses WindowSizeClass on Android and horizontalSizeClass on iOS.
• Add item sheet: Bottom sheet with photo source chooser (camera or gallery), name field, category dropdown, color picker, season chips, and save button.
• Multi-select & delete: Long-press enters selection mode with checkmark indicators, selection header with delete button, and confirmation dialog.
• AI locked sheet: Tapping the "Auto-tag with AI" badge shows an unlock prompt when no API key is configured.
• Theme: WornColors design tokens and WornTheme on both platforms.
• Previews: Phone and tablet previews on all screens (Android @Preview + iOS #Preview).
• Animations: Grid items animate on add/remove via animateItem() (Compose) and .transition + withAnimation (SwiftUI).

Test plan

• Run ./gradlew :composeApp:assembleDebug — builds successfully
• Run ./gradlew detekt — passes with no issues
• Run ./gradlew :shared:compileKotlinIosSimulatorArm64 — iOS shared framework compiles
• Android emulator: verify wardrobe grid, category filtering, add item via camera/gallery, multi-select + delete, AI badge → locked sheet
• iPad simulator: verify adaptive layout (3-column grid, centered bottom nav, larger padding)
• Verify previews render in Android Studio and Xcode

Checklist

• ./gradlew detekt passes
• Tested on Android
• Tested on iOS
• Updated documentation (if applicable)

🤖 Generated with Claude Code