Phone tests: expired sign-ins, evidence, and probes that only judge what can be tapped

A saved sign-in whose session expired landed on the login page and every route its persona opened timed out; both the
desktop and the phone sign-in now see that and sign in afresh. A route that fails to open leaves its screenshot and
text, as a failed sign-in does. A target's probes stay inside what its scroller shows (a card half under the feed's
top edge was failed for the part out of sight), a failed probe names what it hit, and the element blamed for sideways
scroll is never one inside a nested clipping box, which can't widen the page. The desktop guard reads its probe sizes
as a list.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

tests/e2e/Mobile/RouteSweepTests.cs

@@ -25,7 +25,15 @@ namespace decePubClient.E2E.Mobile
 			var route = Route.Get(slug);
 			var persona = route.Persona();
 			await using var session = route.SignedOut ? await browser.Open(phone: phone) : await SignIn.As(browser, persona, phone);
-			await route.Open(session.Page, persona);
+			try
+			{
+				await route.Open(session.Page, persona);
+			}
+			catch (Exception e) when (e is not Xunit.Sdk.SkipException)
+			{
+				await SignIn.Evidence(session.Page, $"open-{phone.Key}-{slug}");
+				throw;
+			}
 			var report = await Fit.Sweep(session.Page, phone, slug, route.Screens);
 			if (!route.Gating)
 				return;