rewrite README; replace example e2e spec with a smoke test

README is now project-specific (features, stack, dev commands, docs).
The Playwright spec checks home/inventories/wiki render and asserts no
console errors.

end2end/tests/example.spec.ts

@@ -1,9 +0,0 @@
-import { test, expect } from "@playwright/test";
-
-test("homepage has title and links to intro page", async ({ page }) => {
-  await page.goto("http://localhost:3000/");
-
-  await expect(page).toHaveTitle("Welcome to Leptos");
-
-  await expect(page.locator("h1")).toHaveText("Welcome to Leptos!");
-});

end2end/tests/smoke.spec.ts

@@ -0,0 +1,56 @@
+import { test, expect, type Page } from "@playwright/test";
+
+const BASE = "http://localhost:3000";
+
+// Collects browser console errors and page errors for the duration of a test.
+function trackErrors(page: Page): string[] {
+  const errors: string[] = [];
+  page.on("console", (msg) => {
+    if (msg.type() === "error") {
+      errors.push(msg.text());
+    }
+  });
+  page.on("pageerror", (err) => {
+    errors.push(String(err));
+  });
+  return errors;
+}
+
+test("home page: campaign name, version, nav", async ({ page }) => {
+  const errors = trackErrors(page);
+  await page.goto(`${BASE}/`);
+
+  await expect(page.locator("#campaign-name")).toHaveValue("В Поисках Дмитрия Шардалина");
+  await expect(page.locator(".version")).toContainText("aex");
+  await expect(page.locator(".main-nav a")).toHaveCount(3);
+  await expect(page.locator(".main-nav")).toContainText("Персонаж");
+  await expect(page.locator(".main-nav")).toContainText("Инвентарь");
+  await expect(page.locator(".main-nav")).toContainText("Информация");
+
+  expect(errors).toEqual([]);
+});
+
+test("inventories page: personal and common sections", async ({ page }) => {
+  const errors = trackErrors(page);
+  await page.goto(`${BASE}/inv`);
+
+  await expect(page.locator(".inventory-personal")).toHaveCount(1);
+  await expect(page.locator(".inventory-common")).toHaveCount(1);
+  // each section has one balance block with five currency inputs
+  await expect(page.locator(".inventory-personal .balance .numput")).toHaveCount(5);
+  await expect(page.locator(".inventory-common .balance .numput")).toHaveCount(5);
+  // and at least one item row each
+  await expect(page.locator(".inventory-personal .item").first()).toBeVisible();
+  await expect(page.locator(".inventory-common .item").first()).toBeVisible();
+
+  expect(errors).toEqual([]);
+});
+
+test("wiki page: stub renders", async ({ page }) => {
+  const errors = trackErrors(page);
+  await page.goto(`${BASE}/wiki`);
+
+  await expect(page.locator("body")).toContainText("books");
+
+  expect(errors).toEqual([]);
+});