Make Playwright runs hermetic and fix stale race-hub specs

Six suite failures had rotted in: three race-hub specs targeted the
sub-tabbed Race Story UI deleted in the Phase 22 redesign, and the
command-center specs depended on the real OpenF1 calendar, whose focus
weekend drifted away from the seeded Monaco session as time passed.

The e2e/visual configs now point BOXBOX_OPENF1_BASE_URL (new override)
at an unreachable address so runs are hermetic and date-stable; the
race-hub specs were rewritten against the current RaceStoryCanvas UI,
and the one drifted mobile snapshot regenerated.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/visual/helpers.ts

@@ -19,6 +19,11 @@ export async function gotoCommandCenterReady(page: Page): Promise<void> {
   await expect(page.getByTestId('command-center')).toBeVisible()
   await expect(page.getByTestId('cc-focus')).toBeVisible()
   await expect(page.getByTestId('cc-session-9472')).toBeVisible()
+  // The e2e stack runs with an unreachable OpenF1 base URL, so wait for the
+  // season-calendar query to settle on its local fallback before screenshotting.
+  await expect(
+    page.getByText('Using local meetings because the full calendar could not load.'),
+  ).toBeVisible()
   await waitForScreenshotReady(page)
 }