fix(ui): F8-04b e2e — viewport-agnostic nav + refresh after create

- lobby-create-screen: call lobbyData.refresh() after a successful
  POST so the new game shows up in the private-games panel
  immediately. The shared lobby-data store is otherwise lazy
  (ensure-on-first-mount), which rendered a stale list across the
  post-create navigation in the e2e suite.
- e2e tests that move between lobby sub-panels now go through
  `window.__galaxyNav.go(...)` rather than clicking the sidebar
  items. The mobile sidebar tucks the submenu behind a dropdown, so
  testid-based clicks fail on the mobile-iphone-13 / pixel-5
  viewports — the dev nav surface bypasses that UX (which has its
  own coverage in `lobby-tier-gate` / future submenu specs).
- game-shell-map missing-membership test: assert
  `lobby-account-name` instead of `lobby-create-button` on
  drop-back-to-lobby (the button moved into the paid-only
  private-games sub-panel; the identity strip is the constant lobby
  chrome).
- inspector-ship-group + ship-group-send synthetic loader specs:
  jump straight to the dev-only `synthetic-reports` top-level
  screen via the dev nav surface before looking for the file
  input (the loader moved off Overview in F8-04b).

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

ui/frontend/tests/e2e/ship-group-send.spec.ts

@@ -135,9 +135,13 @@ async function bootSession(page: Page): Promise<void> {
 }
 
 async function loadSyntheticGame(page: Page): Promise<void> {
-	// Seeded session → the dispatcher renders the lobby; the synthetic
-	// loader lives there behind the dev-affordances flag.
+	// Seeded session → the dispatcher renders the lobby. F8-04b moved
+	// the synthetic-report loader off of Overview into its own
+	// dev-only top-level screen; jump straight to it via the dev nav
+	// surface so the spec is viewport-agnostic.
 	await page.goto("/");
+	await page.waitForFunction(() => window.__galaxyNav !== undefined);
+	await page.evaluate(() => window.__galaxyNav!.go("synthetic-reports"));
 	await expect(page.getByTestId("lobby-synthetic-section")).toBeVisible();
 	const file = page.getByTestId("lobby-synthetic-file");
 	await file.setInputFiles({