feat: mejoras al dashboard y selector de UUID

- Dashboard: agregar opciones de 50 pestañas deterministas (lotes 1-4)
- Dashboard: botón para cerrar salas individuales y expulsar jugadores
- Dashboard: selector de variante G por sala individual en tabla
- Nuevo selector moderno de UUID en página principal
- Mostrar nombres de jugadores en selector de UUID
- Búsqueda por UUID o nombre de jugador
- Redireccionar /missing-uuid a selector principal
- Endpoints para obtener UUIDs con nombres y cerrar/cambiar variante de salas

server/src/adminApi.ts

@@ -114,6 +114,48 @@ adminRouter.post("/rooms/:roomId/kick/:playerId", async (req: Request, res: Resp
   }
 });
 
+adminRouter.post("/rooms/:roomId/close", async (req: Request, res: Response) => {
+  try {
+    const { roomId } = req.params;
+    const rooms = await matchMaker.query({ roomId });
+    
+    if (rooms.length === 0) {
+      return res.status(404).json({ error: "Room not found" });
+    }
+
+    await matchMaker.remoteRoomCall(roomId, "executeAdminCommand", ["sendToLobby"]);
+    
+    res.json({ success: true, message: `Room ${roomId} closed and players sent to lobby` });
+  } catch (error) {
+    console.error(`[AdminAPI] Error closing room ${req.params.roomId}:`, error);
+    res.status(500).json({ error: "Failed to close room" });
+  }
+});
+
+adminRouter.post("/rooms/:roomId/variant", async (req: Request, res: Response) => {
+  try {
+    const { roomId } = req.params;
+    const { variant } = req.body;
+    
+    if (!variant || !['G1', 'G2', 'G3', 'G4', 'G5'].includes(variant)) {
+      return res.status(400).json({ error: "Invalid variant. Must be one of: G1, G2, G3, G4, G5" });
+    }
+
+    const rooms = await matchMaker.query({ roomId });
+    
+    if (rooms.length === 0) {
+      return res.status(404).json({ error: "Room not found" });
+    }
+
+    await matchMaker.remoteRoomCall(roomId, "executeAdminCommand", ["setVariant", variant]);
+    
+    res.json({ success: true, message: `Room ${roomId} variant changed to ${variant}` });
+  } catch (error) {
+    console.error(`[AdminAPI] Error changing variant for room ${req.params.roomId}:`, error);
+    res.status(500).json({ error: "Failed to change room variant" });
+  }
+});
+
 adminRouter.get("/stats", async (req: Request, res: Response) => {
   try {
     const stats = await matchMaker.stats.fetchAll();
@@ -461,6 +503,28 @@ adminRouter.get("/admin/uuids", async (req: Request, res: Response) => {
   }
 });
 
+// UUID with names endpoint
+adminRouter.get("/admin/uuids-with-names", async (req: Request, res: Response) => {
+  try {
+    const uuids = listAllowedUuids();
+    const nameManager = NameManager.getInstance();
+    
+    const uuidsWithInfo = uuids.map(uuid => {
+      const name = nameManager.getPlayerName(uuid);
+      return {
+        uuid,
+        name: name || null,
+        hasName: !!name
+      };
+    });
+    
+    res.json({ uuids: uuidsWithInfo });
+  } catch (error) {
+    console.error("[AdminAPI] Error fetching UUIDs with names:", error);
+    res.status(500).json({ error: "Failed to fetch UUIDs with names" });
+  }
+});
+
 // SSE endpoint for real-time dashboard updates
 adminRouter.get("/dashboard-stream", (req: Request, res: Response) => {
   // Set SSE headers