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/src/lib/screens/lobby-create-screen.svelte

@@ -9,6 +9,7 @@
 	import { i18n, type TranslationKey } from "$lib/i18n/index.svelte";
 	import { loadCore } from "../../platform/core/index";
 	import { session } from "$lib/session-store.svelte";
+	import { lobbyData } from "$lib/lobby-data.svelte";
 
 	const DEFAULT_MIN_PLAYERS = 2;
 	const DEFAULT_MAX_PLAYERS = 8;
@@ -102,9 +103,17 @@
 				turnSchedule: trimmedSchedule,
 				targetEngineVersion: targetEngineVersion.trim() || DEFAULT_TARGET_ENGINE_VERSION,
 			});
-			// Land on the private-games panel where the freshly created
-			// game shows up — the lobby-data store will refresh on next
-			// mount.
+			// Refresh the lobby-data cache so the freshly-created game
+			// shows up in the private-games panel the moment we land
+			// there. The shared store is otherwise lazy (ensure-on-
+			// first-mount) and would render a stale list across the
+			// navigation.
+			try {
+				await lobbyData.refresh();
+			} catch {
+				// Refresh failure does not block the navigation —
+				// the panel will retry on its own mount.
+			}
 			appScreen.go("games-private-games");
 		} catch (err) {
 			formError = describeLobbyError(err);