test(web): warm up lazy Plot import before chart-links matrix

The inert-link E2E is the first spec that mounts ChartCanvas, so CI can
spend longer than the default expect timeout loading Observable Plot.
Prime the module with a safe fixture navigation before the href matrix.

Co-authored-by: cynarAI <cynarAI@users.noreply.github.com>

apps/web/e2e/chart-links.spec.ts

@@ -4,6 +4,10 @@ import { captureScreenshot } from "./helpers";
 const fixture = "/e2e/fixtures/chart-links.html";
 
 test("chart links cannot execute script when clicked or expanded", async ({ page }, testInfo) => {
+  test.setTimeout(120_000);
+  // ChartCanvas lazy-loads Observable Plot; pay the import cost once before the matrix below.
+  await page.goto(`${fixture}?${new URLSearchParams({ href: "#details", inspect: "0" })}`);
+  await expect(page.locator("svg circle").first()).toBeVisible({ timeout: 90_000 });
   for (const inspect of ["0", "1"]) {
     for (const href of [
       'javascript:void(document.body.dataset.plotExecuted="yes")',

packages/testkit/src/journeys.test.ts

@@ -1301,8 +1301,9 @@ describeJourneys("required product journeys", () => {
     });
 
     await joinMainConversation(prisma, { userId: me.userId, botIds: [writer.id] });
+    // Lab has a main conversation of its own; the home one is where Writer joined.
     const conversation = await prisma.chatGroup.findFirstOrThrow({
-      where: { userId: me.userId, kind: "main" },
+      where: { userId: me.userId, spaceId: main.spaceId, kind: "main" },
       include: { thread: true },
     });
     const inMain = await scheduleAndWake("Writer", "main-digest");