Initial WatchLink scaffold

tests/access.test.ts

@@ -0,0 +1,18 @@
+import { describe, expect, it } from "vitest";
+import { canEnterRoom } from "../src/lib/access";
+
+describe("canEnterRoom", () => {
+  it("allows public rooms", () => {
+    expect(canEnterRoom({ visibility: "PUBLIC" })).toBe(true);
+  });
+
+  it("allows owners and admins regardless of room visibility", () => {
+    expect(canEnterRoom({ visibility: "EXPLICIT", isOwner: true })).toBe(true);
+    expect(canEnterRoom({ visibility: "ROLE_RESTRICTED", isAdmin: true })).toBe(true);
+  });
+
+  it("requires accepted friend or explicit membership for friends-only rooms", () => {
+    expect(canEnterRoom({ visibility: "FRIENDS" })).toBe(false);
+    expect(canEnterRoom({ visibility: "FRIENDS", isFriend: true })).toBe(true);
+  });
+});