PC set-up: one line per PC (/setup/<name>.ps1), the admin laptop always let in, and the admin check no longer breaks the script

- the inserted administrator check split the header comment, leaving '} for ... run ONCE' as code: WS and SC
  join.ps1 failed to parse (Windows' parser: Missing opening '(' after keyword 'for'); now after the whole line
- site.admin_ips / admin_keys (laptop 10.6.7.38, fixed in UniFi) go into every PC script's firewall rule and key
  files, and into the Mac join line, so running a set-up again never shuts the laptop out
- scripts verified by Windows' own PowerShell parser on the NA Lighting PC

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_campus.py

@@ -627,3 +627,43 @@ class TestLongerHolds(unittest.TestCase):
         self.assertEqual(pages, {"down": [], "up": [1], "2000": [19], "3000": [98]})
         self.assertEqual(st["options"]["runWhileHeld"], [2000, 3000])
         self.assertEqual(schema.validate(cfg)[0], [])
+
+
+class TestPcScripts(unittest.TestCase):
+    """The PC scripts: the admin check after the whole header line, the admin laptop let in, one line per PC."""
+
+    def cfg(self):
+        cfg = json.load(open(os.path.join(ROOT, "config.json")))
+        cfg["site"]["admin_ips"] = ["10.6.7.38"]
+        cfg["site"]["admin_keys"] = ["ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAITESTKEY christian-laptop@waters"]
+        return cfg
+
+    def test_the_admin_check_never_splits_a_line(self):
+        from settings import scripts
+        text = scripts.with_admin_check(scripts.windows_setup(self.cfg(), "bibletv"))
+        lines = text.split("\n")
+        i = next(i for i, ln in enumerate(lines) if ln.startswith("if (-not ([Security.Principal"))
+        self.assertTrue(lines[i - 1].startswith("# Status panel remote access for "))
+        self.assertEqual(lines[i + 2], "}")                                          # nothing left after the brace
+        self.assertIn("$IngestIPs = @('10.1.1.1', '10.6.3.222', '10.6.7.38')", text)  # the laptop through the firewall
+        self.assertIn("christian-laptop@waters", text)
+        join = campus.join_windows(self.cfg(), "http://10.5.2.60:8020").split("\n")
+        self.assertTrue(join[1].startswith("# Status panel remote access for "))
+        self.assertEqual(join[4], "}")
+
+    def test_a_bad_admin_key_is_refused(self):
+        from settings import scripts
+        cfg = self.cfg()
+        cfg["site"]["admin_keys"] = ["ssh-ed25519 AAAA'; rm -rf / #"]
+        with self.assertRaises(ValueError):
+            scripts.admin_keys(cfg)
+
+    def test_the_mac_join_line_takes_the_admin_key_too(self):
+        from settings import scripts
+        real = scripts.public_key
+        scripts.public_key = lambda cfg: ("ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPANELKEY status-panel@sc", "status-panel@sc")
+        try:
+            text = campus.join_mac(self.cfg(), "http://10.5.2.60:8020")
+        finally:
+            scripts.public_key = real
+        self.assertIn("for A in 'ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAITESTKEY christian-laptop@waters'; do", text)