- PUT /messages/:msgId now returns {ok, edited:true} - WS pushes 'message_edited' event to both chat members - Mobile UI: show 'ред.' marker when edited=true - Audit log: message.edit action - Repo: GetMessage helper for fetching after edit
- POST /api/v1/chats (ensure chat between users, normalized pair) - GET /api/v1/chats (list with last message + unread) - GET /api/v1/chats/:id/messages - POST /api/v1/chats/:id/messages (send text/photo, push via WS) - PUT /api/v1/chats/:id/read (mark all read) - PUT /api/v1/messages/:msgId (edit, owner only) - DELETE /api/v1/messages/:msgId (soft delete) - POST /api/v1/blocks, DELETE /api/v1/blocks/:id - POST /api/v1/reports - WS /ws?token= (real-time message push, ping/pong) - migrations 0003: chats, messages, blocks, reports
