added initial roadmap and implementation

tests/integration/auth.test.ts

@@ -0,0 +1,42 @@
+import { describe, it, expect } from 'vitest';
+import { createAnonClient } from './setup.ts';
+
+const client = createAnonClient();
+const email = `test-${Date.now()}@example.com`;
+const password = 'password123';
+
+describe('Authentication', () => {
+  it('should sign up a new user', async () => {
+    const { data, error } = await client.auth.signUp({
+      email,
+      password,
+    });
+
+    expect(error).toBeNull();
+    expect(data.user).toBeDefined();
+    expect(data.user?.email).toBe(email);
+    expect(data.session).toBeDefined(); // Assuming auto-sign-in on signup
+  });
+
+  it('should sign in an existing user', async () => {
+    const { data, error } = await client.auth.signInWithPassword({
+      email,
+      password,
+    });
+
+    expect(error).toBeNull();
+    expect(data.session).toBeDefined();
+    expect(data.user).toBeDefined();
+    expect(data.user?.email).toBe(email);
+  });
+
+  it('should fail with incorrect password', async () => {
+    const { data, error } = await client.auth.signInWithPassword({
+      email,
+      password: 'wrongpassword',
+    });
+
+    expect(error).toBeDefined();
+    expect(data.session).toBeNull();
+  });
+});