Implement video feed likes/comments/shares

[ThatXliner]

The like, comment, and share buttons on the video feed were removed (previously local-state only, not persisted).

Work needed

• Add tRPC routes: like/unlike, comment list/add, share tracking
• Re-add action buttons UI to feed cards
• Likes/comments/shares persist to backend and reflect real counts

Acceptance criteria

• Users can like/unlike feed items, persisted to backend
• Comment count reflects real data
• Share action opens native share sheet and records the event

[lcai000]

doesnt likes and comments feature require a database for that and involving user accounts? leave this for later?

[lcai000]

oops i accidentlaly closed it

[ThatXliner]

doesnt likes and comments feature require a database for that and involving user accounts? leave this for later?

we have a db

[yohaann196]

everyone here should be added to the DB... lmk if ur not

[yohaann196]

@ThatXliner @lcai000 i can work on this if u guys want