Add specific team chat channels, and update README

backend/prisma/schema.prisma

@@ -135,12 +135,13 @@ model PhotoSubmission {
 model ChatMessage {
   id        String   @id @default(uuid())
   gameId    String
-  game      Game     @relation(fields: [gameId], references: [id], onDelete: Cascade)
+  game      Game    @relation(fields: [gameId], references: [id], onDelete: Cascade)
   teamId    String?
-  team      Team?    @relation(fields: [teamId], references: [id])
+  team      Team?   @relation(fields: [teamId], references: [id])
   userId    String
-  user      User     @relation(fields: [userId], references: [id])
+  user      User    @relation(fields: [userId], references: [id])
   message   String
+  isDirect  Boolean @default(false)
   sentAt    DateTime @default(now())
 }
 

backend/src/routes/games.ts

@@ -201,6 +201,10 @@ router.delete('/:id', authenticate, async (req: AuthRequest, res: Response) => {
       return res.status(403).json({ error: 'Not authorized' });
     }
 
+    if (game.status !== 'DRAFT') {
+      return res.status(400).json({ error: 'Only draft games can be deleted' });
+    }
+
     await prisma.game.delete({ where: { id } });
 
     res.json({ message: 'Game deleted' });

backend/src/socket/index.ts

@@ -26,24 +26,39 @@ export default function setupSocket(io: Server) {
       });
     });
 
-    socket.on('chat-message', async (data: { gameId: string; teamId?: string; message: string; userId: string; userName: string }) => {
+    socket.on('chat-message', async (data: { 
+      gameId: string; 
+      teamId?: string; 
+      isDirect?: boolean;
+      message: string; 
+      userId: string; 
+      userName: string 
+    }) => {
       const chatMessage = await prisma.chatMessage.create({
         data: {
           gameId: data.gameId,
-          teamId: data.teamId,
+          teamId: data.teamId || null,
           userId: data.userId,
-          message: data.message
+          message: data.message,
+          isDirect: data.isDirect || false
         }
       });
-      
-      io.to(`game:${data.gameId}`).emit('chat-message', {
+
+      const messageData = {
         id: chatMessage.id,
         teamId: data.teamId,
+        isDirect: chatMessage.isDirect,
         userId: data.userId,
         userName: data.userName,
         message: data.message,
         sentAt: chatMessage.sentAt
-      });
+      };
+
+      if (data.isDirect && data.teamId) {
+        io.to(`game:${data.gameId}`).emit('chat-message', messageData);
+      } else {
+        io.to(`game:${data.gameId}`).emit('chat-message', messageData);
+      }
     });
 
     socket.on('team-advanced', async (data: { gameId: string; teamId: string }) => {