chore: clean up repo structure

- Add node_modules/, test-results/, e2e-report/, .omp/ to .gitignore
- Remove throwaway debug scripts (debug-pw*.js, debug-login-dom.js)
- Remove empty mock-server/ directory
- Untrack harness artifact (.omp/plans/)
- Add missing project files to git (e2e tests, Dockerfiles, tooling configs)

e2e/utils/auth.ts

@@ -0,0 +1,58 @@
+import { Page } from '@playwright/test';
+
+/**
+ * Log in to LuCI with empty root password.
+ * Handles the "No password set" notification if it appears.
+ */
+export async function login(page: Page): Promise<void> {
+  await page.goto('/cgi-bin/luci');
+  // Wait for the JS framework to finish instantiating the login view.
+  await page.waitForFunction(() => {
+    const view = document.querySelector('#view');
+    return view && !view.querySelector('.spinning');
+  }, { timeout: 30_000, polling: 500 });
+  await page.waitForSelector('#luci_username', { state: 'visible', timeout: 30_000 });
+  await page.fill('#luci_username', 'root');
+  await page.fill('#luci_password', '');
+  await page.click('.cbi-button-positive');
+  // Wait for navigation into the admin overview.
+  await page.waitForURL(/\/cgi-bin\/luci\//, { timeout: 30_000 });
+  // LuCI admin page can take ~15s on first cold load; give it time to render.
+  await page.waitForFunction(() => {
+    const view = document.querySelector('#view');
+    return view && !view.querySelector('.spinning');
+  }, { timeout: 30_000, polling: 500 });
+  // Dismiss "No password set" modal/notification if present.
+  const closeBtn = page.locator('.alert-message .close, .alert-message button, [data-dismiss="alert"]').first();
+  try {
+    await closeBtn.click({ timeout: 2_000 });
+  } catch {
+    // No notification to dismiss.
+  }
+}
+
+/**
+ * Reset the active gateway back to amsterdam via direct ubus RPC.
+ */
+export async function resetToAmsterdam(page: Page): Promise<void> {
+  const loginRes = await page.request.post('/ubus', {
+    data: {
+      jsonrpc: '2.0',
+      id: 1,
+      method: 'call',
+      params: ['00000000000000000000000000000000', 'session', 'login', { username: 'root', password: '' }],
+    },
+  });
+  const loginData = await loginRes.json();
+  const token = loginData.result?.[1]?.ubus_rpc_session;
+  if (!token) throw new Error('ubus login failed');
+
+  await page.request.post('/ubus', {
+    data: {
+      jsonrpc: '2.0',
+      id: 2,
+      method: 'call',
+      params: [token, 'zt-gateway', 'switch', { region: 'amsterdam', mode: 'force' }],
+    },
+  });
+}