🛠️ Getting ready for the 2026 edition

[Copilot]

Major update preparing AndroidMakersApp for the 2026 event season — modernized stack, redesigned UI, new desktop target, and Navigation3 migration.

Build & Infrastructure

• Gradle 9.1, Kotlin 2.3, AGP 9, Compose Multiplatform 1.11
• JVM desktop target + desktopApp module
• CI: PR jobs for tests, lint, detekt
• Version code bumped to 1500

Navigation

• Migrated to Navigation3 with type-safe NavKey routes and NavigationState/Navigator
• Material3 Adaptive ListDetailSceneStrategy for side-by-side agenda/session detail on wide screens
• DeepLinkHandler for session and speaker URIs

UI

• New green-based color theme (mobile + Wear OS)
• Session/speaker detail: card layouts, tag chips, shared element transitions
• Sponsor screen: card-based layout
• Agenda filter: modal bottom sheet with FilterChip + FlowRow replacing drawer
• Theme preference (System/Light/Dark) persisted via DataStore, configurable from About screen

New Features

• Feed screen with alert banners, article cards, venue info — gated behind FeatureFlags.isFeedEnabled

Code Quality

• ViewModels migrated to StateFlow + collectAsStateWithLifecycle
• Unit tests: GetAgendaUseCase, GetFeedUseCase, GetFavoriteSessionsUseCase, MergeBookmarksUseCase, SetSessionBookmarkUseCase
• Lce.Error now carries an Exception for proper error propagation
• Strings/branding updated for AMxDC26

Wear OS

• Session detail: improved typography, spacing, speaker cards, metadata alignment

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