test(e2e): log a mood at a chosen time against the real server

The mood timestamp spec answered the POST and the list read itself. It now
runs on the mood journey's account: the instant typed into the form is the
instant stored, and the entry is in the list, also after a reload.

src/__tests__/e2e-critical-no-api-stub-guard.test.ts

@@ -49,7 +49,7 @@ const E2E = join(process.cwd(), "e2e");
  * the set is the release gate, so a journey that loses its tag is a change
  * somebody should see here.
  */
-const CRITICAL_TEST_FLOOR = 11;
+const CRITICAL_TEST_FLOOR = 12;
 
 /** A test whose title literal carries the tag, however the call is spelled. */
 const CRITICAL_TEST =