test(dashboard): add Playwright e2e scaffolding with smoke spec

Milestone A of the frontend test plan. Sets up the test rig — config,
globalSetup that probes the backend and seeds an admin session into
storageState, lightweight fixtures, and a 3-test smoke spec — without
yet covering any user journeys (those land in Milestone B).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

dashboard/tests/e2e/fixtures/api.ts

@@ -0,0 +1,47 @@
+import { request, type APIRequestContext } from '@playwright/test';
+import { promises as fs } from 'node:fs';
+import path from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
+const API_BASE = process.env.E2E_API_BASE ?? 'http://127.0.0.1:18080';
+const STATE_PATH = path.join(__dirname, '..', '.auth', 'admin.json');
+
+interface StoredState {
+	origins: Array<{
+		origin: string;
+		localStorage: Array<{ name: string; value: string }>;
+	}>;
+}
+
+let cachedToken: string | null = null;
+
+async function readAdminToken(): Promise<string> {
+	if (cachedToken) return cachedToken;
+	const raw = await fs.readFile(STATE_PATH, 'utf8');
+	const state = JSON.parse(raw) as StoredState;
+	for (const origin of state.origins) {
+		const entry = origin.localStorage.find((e) => e.name === 'picloud.admin.token');
+		if (entry) {
+			cachedToken = entry.value;
+			return entry.value;
+		}
+	}
+	throw new Error(`No picloud.admin.token in ${STATE_PATH} — did globalSetup run?`);
+}
+
+// Thin wrapper around Playwright's request context that injects the
+// admin bearer token from the shared storageState. Use this for
+// setup/teardown shortcuts when the *test itself* is about something
+// else (e.g., a script-editor test that just needs an app to exist).
+export async function adminApi(): Promise<APIRequestContext> {
+	const token = await readAdminToken();
+	return request.newContext({
+		baseURL: API_BASE,
+		extraHTTPHeaders: {
+			authorization: `Bearer ${token}`,
+			'content-type': 'application/json'
+		}
+	});
+}

dashboard/tests/e2e/fixtures/auth.ts

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+import type { Page } from '@playwright/test';
+import { expect } from '@playwright/test';
+
+const ADMIN_USERNAME = process.env.E2E_ADMIN_USERNAME ?? 'admin';
+const ADMIN_PASSWORD = process.env.E2E_ADMIN_PASSWORD ?? 'admin';
+
+// Drive the login form like a real user. globalSetup already saves a
+// storageState for the shared admin, so most tests don't need this —
+// it's reserved for specs that explicitly cover the login UI.
+export async function loginAsAdmin(page: Page): Promise<void> {
+	await page.goto('/admin/login');
+	await page.getByLabel('Username').fill(ADMIN_USERNAME);
+	await page.getByLabel('Password').fill(ADMIN_PASSWORD);
+	await page.getByRole('button', { name: /sign in/i }).click();
+	await expect(page).toHaveURL(/\/admin\/apps$/);
+}
+
+export async function logout(page: Page): Promise<void> {
+	await page.getByRole('button', { name: /logout/i }).click();
+	await expect(page).toHaveURL(/\/admin\/login$/);
+}

dashboard/tests/e2e/fixtures/cleanup.ts

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+import type { APIRequestContext } from '@playwright/test';
+import { adminApi } from './api';
+
+// Resources to delete after a test, in LIFO order. Tests register
+// their creations and the registry tears everything down in
+// `cleanupRegistered` — typically called from `test.afterEach`.
+
+type Cleanup = (api: APIRequestContext) => Promise<void>;
+
+export class CleanupRegistry {
+	private items: Cleanup[] = [];
+
+	app(slugOrId: string): void {
+		this.items.push(async (api) => {
+			await api.delete(`/api/v1/admin/apps/${encodeURIComponent(slugOrId)}?force=true`);
+		});
+	}
+
+	adminUser(userId: string): void {
+		this.items.push(async (api) => {
+			await api.delete(`/api/v1/admin/admins/${userId}`);
+		});
+	}
+
+	apiKey(keyId: string): void {
+		this.items.push(async (api) => {
+			await api.delete(`/api/v1/admin/api-keys/${keyId}`);
+		});
+	}
+
+	async run(): Promise<void> {
+		if (this.items.length === 0) return;
+		const api = await adminApi();
+		try {
+			for (const item of this.items.reverse()) {
+				try {
+					await item(api);
+				} catch {
+					// Best-effort cleanup — a missing resource (already
+					// deleted by the test) shouldn't fail the suite.
+				}
+			}
+		} finally {
+			await api.dispose();
+			this.items = [];
+		}
+	}
+}

dashboard/tests/e2e/fixtures/ids.ts

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+/* eslint-disable no-empty-pattern -- Playwright fixtures require an
+   object-pattern first arg; these fixtures don't depend on any other
+   fixture so the pattern is intentionally empty. */
+import { test as base } from '@playwright/test';
+import { randomBytes } from 'node:crypto';
+
+// Tests share a single backend/Postgres. To avoid collisions we tag
+// every resource the test creates with a short random suffix plus the
+// Playwright worker index. This way two workers running the same spec
+// in parallel never fight over the same slug or username.
+
+export function shortId(): string {
+	return randomBytes(3).toString('hex');
+}
+
+export function uniqueSlug(prefix: string, workerIndex: number): string {
+	const cleaned = prefix
+		.toLowerCase()
+		.replace(/[^a-z0-9]+/g, '-')
+		.replace(/^-|-$/g, '');
+	return `e2e-${cleaned}-w${workerIndex}-${shortId()}`;
+}
+
+export function uniqueUsername(prefix: string, workerIndex: number): string {
+	// Username regex is [a-z0-9._-]{2,32}. Mirror the slug format.
+	const cleaned = prefix.toLowerCase().replace(/[^a-z0-9]+/g, '');
+	return `e2e${cleaned}w${workerIndex}${shortId()}`.slice(0, 32);
+}
+
+export const test = base.extend<{
+	uniqueSlug: (prefix: string) => string;
+	uniqueUsername: (prefix: string) => string;
+}>({
+	uniqueSlug: async ({}, use, testInfo) => {
+		await use((prefix) => uniqueSlug(prefix, testInfo.workerIndex));
+	},
+	uniqueUsername: async ({}, use, testInfo) => {
+		await use((prefix) => uniqueUsername(prefix, testInfo.workerIndex));
+	}
+});
+
+export { expect } from '@playwright/test';