Add iOS context menu to video cards with preview and quick actions

[kmch4n]

Summary

Replace the current long-press-enters-selection-mode interaction on VideoCard / VideoCardCompact with an iOS-style context menu that shows a thumbnail preview and quick actions (Favorite, Edit, Delete, Share, Select).

Motivation

• iOS users expect long-press on any media thumbnail to produce a context menu (Photos, Files, Safari, Music all follow this convention).
• The current long-press → selection-mode transition has no visual affordance and is hard to discover.
• A context menu can host the multi-select entry point as a Select item, which is exactly the pattern Apple uses in Photos.

Proposal

• Wrap the card with a native iOS context menu (candidate: react-native-ios-context-menu or RN core ContextMenu where available).
• Context menu items:
  • Toggle Favorite
  • Edit (open video detail screen)
  • Share (native share sheet)
  • Delete
  • Select → enters existing bulk-selection mode
• Tap interaction is unchanged (still opens video detail).
• Android / Web keep the existing long-press-to-select flow as fallback.

Notes

• react-native-ios-context-menu supports preview + menu items + haptics.
• Selection mode itself does not need to be removed — it just stops being the default long-press outcome.
• Coordinate with the haptic feedback work so menu invocation triggers the correct impact.

Acceptance criteria

• Long-press on a video card shows a context menu with at least Favorite / Edit / Delete / Select.
• Tap still opens the video detail screen.
• Bulk selection mode remains reachable via the Select action.
• Web / Android fall back to the current long-press selection behavior without crashing.