feat: lobby shows player names and classes in room listing

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

game/lobby.go

@@ -13,10 +13,17 @@ const (
 	RoomPlaying
 )
 
+type LobbyPlayer struct {
+	Name        string
+	Class       string // empty until class selected
+	Fingerprint string
+	Ready       bool
+}
+
 type LobbyRoom struct {
 	Code    string
 	Name    string
-	Players []string
+	Players []LobbyPlayer
 	Status  RoomStatus
 	Session *GameSession
 }
@@ -45,7 +52,7 @@ func (l *Lobby) CreateRoom(name string) string {
 	return code
 }
 
-func (l *Lobby) JoinRoom(code, playerName string) error {
+func (l *Lobby) JoinRoom(code, playerName, fingerprint string) error {
 	l.mu.Lock()
 	defer l.mu.Unlock()
 	room, ok := l.rooms[code]
@@ -58,10 +65,49 @@ func (l *Lobby) JoinRoom(code, playerName string) error {
 	if room.Status != RoomWaiting {
 		return fmt.Errorf("room %s already in progress", code)
 	}
-	room.Players = append(room.Players, playerName)
+	room.Players = append(room.Players, LobbyPlayer{Name: playerName, Fingerprint: fingerprint})
 	return nil
 }
 
+func (l *Lobby) SetPlayerClass(code, fingerprint, class string) {
+	l.mu.Lock()
+	defer l.mu.Unlock()
+	if room, ok := l.rooms[code]; ok {
+		for i := range room.Players {
+			if room.Players[i].Fingerprint == fingerprint {
+				room.Players[i].Class = class
+			}
+		}
+	}
+}
+
+func (l *Lobby) SetPlayerReady(code, fingerprint string, ready bool) {
+	l.mu.Lock()
+	defer l.mu.Unlock()
+	if room, ok := l.rooms[code]; ok {
+		for i := range room.Players {
+			if room.Players[i].Fingerprint == fingerprint {
+				room.Players[i].Ready = ready
+			}
+		}
+	}
+}
+
+func (l *Lobby) AllReady(code string) bool {
+	l.mu.RLock()
+	defer l.mu.RUnlock()
+	room, ok := l.rooms[code]
+	if !ok || len(room.Players) == 0 {
+		return false
+	}
+	for _, p := range room.Players {
+		if !p.Ready {
+			return false
+		}
+	}
+	return true
+}
+
 func (l *Lobby) GetRoom(code string) *LobbyRoom {
 	l.mu.RLock()
 	defer l.mu.RUnlock()

game/lobby_test.go

@@ -17,7 +17,7 @@ func TestCreateRoom(t *testing.T) {
 func TestJoinRoom(t *testing.T) {
 	lobby := NewLobby()
 	code := lobby.CreateRoom("Test Room")
-	err := lobby.JoinRoom(code, "player1")
+	err := lobby.JoinRoom(code, "player1", "fp-player1")
 	if err != nil {
 		t.Errorf("Join failed: %v", err)
 	}
@@ -30,7 +30,7 @@ func TestJoinRoom(t *testing.T) {
 func TestRoomStatusTransition(t *testing.T) {
 	l := NewLobby()
 	code := l.CreateRoom("Test")
-	l.JoinRoom(code, "Alice")
+	l.JoinRoom(code, "Alice", "fp-alice")
 	r := l.GetRoom(code)
 	if r.Status != RoomWaiting {
 		t.Errorf("new room should be Waiting, got %d", r.Status)
@@ -40,7 +40,7 @@ func TestRoomStatusTransition(t *testing.T) {
 	if r.Status != RoomPlaying {
 		t.Errorf("started room should be Playing, got %d", r.Status)
 	}
-	err := l.JoinRoom(code, "Bob")
+	err := l.JoinRoom(code, "Bob", "fp-bob")
 	if err == nil {
 		t.Error("should not be able to join a Playing room")
 	}
@@ -50,9 +50,9 @@ func TestJoinRoomFull(t *testing.T) {
 	lobby := NewLobby()
 	code := lobby.CreateRoom("Test Room")
 	for i := 0; i < 4; i++ {
-		lobby.JoinRoom(code, "player")
+		lobby.JoinRoom(code, "player", "fp-player")
 	}
-	err := lobby.JoinRoom(code, "player5")
+	err := lobby.JoinRoom(code, "player5", "fp-player5")
 	if err == nil {
 		t.Error("Should reject 5th player")
 	}