aesthetic-improvements: replace secondary cyan hover states with steel (batch 2)
- Card components: CartItem, WishlistView, PostCard, GroupCard, PlaylistsView, UserCard (7 files)
- Settings components: BackupsView, SessionManagement, CloudIntegrationView, OfflineQueueManager (4 files)
- DashboardPage: stat cards and activity items hover states (2 instances)
- FeedView: input and button hover states (2 instances)
- Upload zones: MetadataForm, CreatePlaylistModal, CreateProductView, AddEquipmentView, CreateGroupModal (5 files, 6 instances)
- UserCard: avatar border hover state
- Total: ~18 files, ~20 instances replaced
- Preserved: Focus rings (cyan), active/selected states (cyan)
- Action 11.3.1.2 in progress (second batch complete)
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