Steps 4-6: the jobs, the set-up tab with generated scripts, Install the staged folder, site bundles and the campus template

- Overview jobs: Change the playlist, Add or remove a HyperDeck, Add a MIDI link, Add a computer,
  Make a PC program startable; 'Add a key for it' on unwatched Companion connections.
- Computers > Setup: steps with a [how] each and the set-up scripts generated per computer by
  settings/scripts.py from the templates in remote-access/ (no site-shaped value left in them);
  Remove this computer drops the fixes and checks that used it.
- Site setup > Site: the running and staged code, Install the staged folder (a one-shot launchd job
  running install.sh --keep-config, refused while live), Export site bundle (zip), New campus from a
  bundle (this campus's site block stays; every copied computer is flagged until touched).
- sites/: na -> the repo config, _template = the empty campus; install.sh --site <id>.
- Review reads appended checks as 'added'; tests for all of it.
- Deployed page-only to NA Ingest. (config.json, status_panel.py and readiness.py are left to the
  READY-page work in progress in the same tree.)

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

tests/test_apply.py

@@ -92,6 +92,12 @@ class TestDraftAndPlan(unittest.TestCase):
         self.assertIn("key HD2 › check 1 › optional: yes → no", texts)
         self.assertIn("computer Lighting PC › notes: Keep the network profile on Public: rtpMIDI's Bonjour rules only allow Public. → keep it Public", texts)
         self.assertTrue(any(t == "site › editing code changed" for t in texts), texts)   # a secret: never its value
+        more = json.loads(json.dumps(self.cfg))
+        midi = next(t for t in more["tiles"] if t["id"] == "midi")
+        midi["checks"].append({"type": "midi_peer", "session": "NA Tracks", "peer": "Studio B", "tag": "STUDIO B"})
+        texts = [ap.words_for(p, a, b, self.cfg, more)["text"] for p, a, b in ap.changed_paths(self.cfg, more)]
+        self.assertEqual(len(texts), 1)
+        self.assertTrue(texts[0].startswith("key MIDI › check %d added: " % (len(midi["checks"]))), texts)
 
 
 class TestPipeline(unittest.TestCase):