Add game deletion with authorization check

- Add Delete method to GameStore and Persister interface
- Add delete button to game list on home page
- Verify user owns game before allowing deletion
- Use status constants instead of magic numbers
- Remove unused variable in persister

ui/lobby.go

@@ -4,7 +4,7 @@ import (
 	"github.com/ryanhamamura/via/h"
 )
 
-func LobbyView(nicknameBind, createGameKeyDown, createGameClick h.H, isLoggedIn bool, username string, logoutClick h.H, userGames []GameListItem) h.H {
+func LobbyView(nicknameBind, createGameKeyDown, createGameClick h.H, isLoggedIn bool, username string, logoutClick h.H, userGames []GameListItem, deleteGameClick func(id string) h.H) h.H {
 	var authSection h.H
 	if isLoggedIn {
 		authSection = AuthHeader(username, logoutClick)
@@ -35,7 +35,7 @@ func LobbyView(nicknameBind, createGameKeyDown, createGameClick h.H, isLoggedIn
 					createGameClick,
 				),
 			),
-			GameList(userGames),
+			GameList(userGames, deleteGameClick),
 		),
 	)
 }