Add multiplayer rooms and Vercel analytics

tests/multiplayer.test.ts

@@ -0,0 +1,46 @@
+import assert from "node:assert/strict";
+import { test } from "node:test";
+import {
+  createRoomSchema,
+  joinRoomSchema,
+  roomGuessSchema,
+} from "../shared/multiplayer";
+
+const map = "00000000-0000-4000-8000-000000000000";
+test("room limits include the owner and stay between 2 and 16", () => {
+  for (const playerLimit of [2, 16])
+    assert.equal(
+      createRoomSchema.parse({
+        datasetId: map,
+        difficulty: "normal",
+        displayName: " Alex ",
+        playerLimit,
+      }).displayName,
+      "Alex",
+    );
+  for (const playerLimit of [1, 17, 2.5, "16", null])
+    assert.equal(
+      createRoomSchema.safeParse({
+        datasetId: map,
+        difficulty: "normal",
+        displayName: "Alex",
+        playerLimit,
+      }).success,
+      false,
+    );
+});
+test("multiplayer names and guesses reject hidden controls, invalid rounds, and non-finite positions", () => {
+  assert.equal(
+    joinRoomSchema.parse({ displayName: " Друг " }).displayName,
+    "Друг",
+  );
+  for (const displayName of ["a", "x\nname", "name\u202e", "a".repeat(33)])
+    assert.equal(joinRoomSchema.safeParse({ displayName }).success, false);
+  for (const payload of [
+    { round: 5, x: 0, z: 0 },
+    { round: 0, x: Infinity, z: 0 },
+    { round: 0, x: NaN, z: 0 },
+    { round: 0, x: 0 },
+  ])
+    assert.equal(roomGuessSchema.safeParse(payload).success, false);
+});