Tests click exactly what they mean

A card's time is a "Post" button now (its nerd stats open with a tap), so the poll test submits through the composer's
own submit button instead of the last button named Post; the feed-memory test opens a thread from the Expand button,
not from the first expand/ link, which on a desktop is now the phone-only Thread entry. The Back flow presses Back with
history.back(): a Back held to close an overlay loads nothing, which GoBackAsync waited for.

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

tests/e2e/Actions/ComposerTests.cs

@@ -42,7 +42,8 @@ namespace decePubClient.E2E.Actions
 					await choices.Nth(1).FillAsync("coffee");
 					// and in the language picked
 					await page.Locator("[data-compose-language]").First.SelectOptionAsync("it");
-					await page.GetByRole(AriaRole.Button, new() { Name = "Post" }).Last.ClickAsync();
+					// (the composer's own submit: a card's time is a "Post" button too, its nerd stats)
+					await page.Locator("form:has(textarea[data-compose]) button[type=submit]").First.ClickAsync();
 					JsonNode latest = null;
 					Assert.True(await Pasture.Eventually(async () => (latest = await Latest(persona))?["content"]?.GetValue<string>().Contains(text) == true, 15),
 						"the poll was never published");

tests/e2e/Actions/FeedMemoryTests.cs

@@ -33,7 +33,7 @@ namespace decePubClient.E2E.Actions
 						homeReads++;
 				};
 				await page.EvalOnSelectorAsync("#feed-scroll", "root => root.scrollTop = 0");
-				await page.Locator("article[data-uri] footer a[href^='expand/']").First.ClickAsync();
+				await page.Locator("article[data-uri] footer a[title='Expand']").First.ClickAsync();
 				await page.WaitForURLAsync("**/expand/**");
 				await page.GoBackAsync();
 				await page.Locator("article[data-uri]").First.WaitForAsync(new() { Timeout = 10000 });