feat: implement basic authentication system

e2e/tests/fixtures.ts

@@ -0,0 +1,24 @@
+import { test as base, expect } from "@playwright/test";
+
+const AUTH_USERNAME = process.env.AUTH_USERNAME || "admin";
+const AUTH_PASSWORD = process.env.AUTH_PASSWORD || "admin";
+
+export const test = base;
+
+test.beforeEach(async ({ page }) => {
+  // Navigate to root to check if we need to login
+  await page.goto("/");
+  await page.waitForLoadState("domcontentloaded");
+
+  // If we see the login page, perform login
+  const loginText = page.getByText("Sign in to access your drawings");
+  if (await loginText.isVisible({ timeout: 2000 }).catch(() => false)) {
+    await page.getByLabel("Username").fill(AUTH_USERNAME);
+    await page.getByLabel("Password").fill(AUTH_PASSWORD);
+    await page.getByRole("button", { name: "Sign in" }).click();
+    // Wait for dashboard to load
+    await page.getByPlaceholder("Search drawings...").waitFor({ state: "visible", timeout: 15000 });
+  }
+});
+
+export { expect };